Bolthole Index

Washington County, Oklahoma

Building permits, zoning and land rules in Washington County, Oklahoma

63Index Score / 100
#35 of 77 in Oklahoma

Washington County, Oklahoma requires building permits and zoning approval in the Bartlesville-Washington County Metropolitan Planning Area, including specified unincorporated land near Bartlesville and along U.S. Highway 751. Bartlesville administers building permits and zoning there; outside that joint jurisdiction, county code enforcement is limited to state-statute violations1,2,3. Oklahoma DEQ handles septic authorization and inspection throughout Washington County, including inside cities4,5.

Do you need a building permit in Washington County, Oklahoma?

Building permits are required for construction, excavation, moving or alteration in the Bartlesville-Washington County Metropolitan Planning Area, which reaches specified unincorporated land near Bartlesville and along U.S. Highway 75.

Building permits are required for construction, excavation, moving or alteration in the Bartlesville-Washington County Metropolitan Planning Area, which reaches specified unincorporated land near Bartlesville and along U.S. Highway 751. Inside Bartlesville, the city issues building permits for structural construction, alteration, demolition, remodeling and reconstruction unless an exemption applies1. Bartlesville's Building Permits & Inspections office administers building permits in the joint jurisdiction; Oklahoma DEQ separately issues septic authorizations throughout the county2,4. Outside the joint planning area, county code enforcement is limited to state-statute violations rather than a general county building-permit program1,3. Statewide base building codes still apply8. In the unincorporated planning area, the published residential new-construction building fee is 8 cents per square foot, with a $100 minimum; residential remodeling is $509. The new-construction fee includes initial plan review, floodplain determination and the certificate of occupancy9.

Who is the Washington County building department, and how do you reach them?

For land inside the metropolitan planning area, use the City of Bartlesville Community Development Department: Building Permits & Inspections is at 918.338.4244, while Planning & Zoning is at 918.338.4243; both are at 401 S. Johnstone Ave., Bartlesville, OK 74003.

For land inside the metropolitan planning area, use the City of Bartlesville Community Development Department: Building Permits & Inspections is at 918.338.4244, while Planning & Zoning is at 918.338.4243; both are at 401 S. Johnstone Ave., Bartlesville, OK 740032. These city offices administer the building permit and zoning approval, but DEQ remains responsible for the septic Authorization to Construct and inspection for addresses throughout Washington County5. For other unincorporated parcels, the Washington County Community Development Office handles E911 addresses, floodplain management and code enforcement limited to state-statute violations; call (918) 331-27103. For a county-road entrance, contact the Board of County Commissioners at (918) 337-2820; a specific county driveway-permit rule could not be confirmed10.

Does Washington County have zoning?

Washington County zoning applies in the defined metropolitan planning area rather than countywide.

Washington County zoning applies in the defined metropolitan planning area rather than countywide1. Bartlesville sets its own city zoning11. Oklahoma DEQ still handles septic authorization inside the city4. Bartlesville also administers zoning in specified unincorporated Washington County land within three miles of the city and along the one-mile-wide U.S. Highway 75 corridor to County Road 3100; other municipalities may have their own zoning1. In the unincorporated planning area, RA requires 5 acres per lot and dwelling; RE requires 2 acres per lot and dwelling, but platted RE lots can be smaller if gross density does not exceed 0.5 dwellings per acre1. Mobile-home parks in RT-1 and RT-2 have district-specific setbacks and spacing, including 20 feet between units1. In an RA, RS or RM district, one rear-yard mobile home may be approved for nonfinancial hardship, with a 10-foot separation from lot lines and residential structures and a permit lasting no more than 180 days1. Ask Planning & Zoning to identify the parcel's district before relying on any dimensional rule2.

How do septic permits work in Washington County?

Oklahoma DEQ administers septic authorization and inspection throughout Washington County, including addresses inside Bartlesville and other cities.

Oklahoma DEQ administers septic authorization and inspection throughout Washington County, including addresses inside Bartlesville and other cities4. Before installing or modifying an on-site sewage system, submit the Report for On-Site Sewage, purchase an Authorization to Construct and wait for DEQ to issue it; alternative systems need prior DEQ approval5. DEQ's online process accepts payment for construction authorizations, soil tests, existing-system evaluations and well evaluations, and requests must include the property's Section, Township and Range12. A new or modified system cannot operate until DEQ approves the inspection or a certified installer installs, self-inspects and approves it; certified-installer final inspections must reach DEQ within 15 days of completion5. Call the DEQ On-Site Sewage Program at (405)702-610013. County soil ratings show 0% without severe limits for a conventional drain field, so make the soil evaluation an early purchase contingency14.

Can you live in an RV or tiny home on your land in Washington County?

Washington County's long-term RV and tiny-home occupancy rules could not be confirmed.

Washington County's long-term RV and tiny-home occupancy rules could not be confirmed. Inside the Bartlesville-Washington County Metropolitan Planning Area, call Planning & Zoning at 918.338.4243 with the parcel address and zoning district before placing or occupying either type of unit1,2. The zoning code does provide a narrow path for one rear-yard mobile home in an RA, RS or RM district when the Board of Adjustment finds nonfinancial hardship; that approval does not establish a general RV or tiny-home right1. Elsewhere in unincorporated Washington County, call the county Community Development Office at (918) 331-27103. Floodplain permits can cover RV parking or storage, manufactured homes, temporary buildings, fill, grading and excavation15. Septic authorization remains with DEQ regardless of the local zoning authority4.

Building a home in Washington County: the steps, in order

Ask the county Community Development Office at (918) 331-2710 whether the parcel is in the metropolitan planning area and whether floodplain review is needed.

  1. Ask the county Community Development Office at (918) 331-2710 whether the parcel is in the metropolitan planning area and whether floodplain review is needed3,15.
  2. Inside the planning area, confirm the zoning district and lot standards with Planning & Zoning at 918.338.4243, then apply for the building permit through Building Permits & Inspections at 918.338.42441,2.
  3. Submit the septic report and obtain the DEQ Authorization to Construct before septic work; secure inspection and approval before operation5.
  4. For a non-domestic well, the drilling contractor must obtain OWRB approval before drilling, and the location must have an active groundwater-use permit; qualifying domestic wells do not need intent-to-drill authorization7.
  5. Obtain an ODOT Driveway Agreement before work in a state-highway right-of-way, or ask the county commissioners about a county-road entrance10,16.
  6. Obtain an E911 address from the county office3.

What to check before you buy land in Washington County

Washington County averages 41.5 inches of precipitation a year and experiences severe drought in about 23% of years, so verify the parcel's water source before buying.

Washington County averages 41.5 inches of precipitation a year and experiences severe drought in about 23% of years, so verify the parcel's water source before buying14. OWRB intent-to-drill authorization is not required for a qualifying domestic well serving household use, livestock up to the land's grazing capacity or irrigation of less than 3 acres; non-domestic wells require approval before drilling and an active groundwater-use permit for the location7. Ask the county Community Development Office to check floodplain status because permits can cover fill, grading, roads, culverts and RV parking or storage as well as buildings3,15. In the joint zoning jurisdiction, confirm the exact district because lot minimums and mobile-home setbacks vary by district1. Typical property tax is about 0.9% of value, with a median annual bill near $1,50514.

Watch-outs

  • Washington County's general residential owner-builder exemption could not be confirmed; ask Building Permits & Inspections at 918.338.4244 before planning to self-build inside the metropolitan planning area2.
  • Do not use distance from Bartlesville alone to decide whether building permits and zoning approval apply: the joint planning area also extends through a U.S. Highway 75 corridor to County Road 31001.
  • A floodplain permit can apply even to RV parking, accessory structures, agricultural buildings, fill, grading or excavation in a special flood hazard area15.

Sources

16 official pages, each quoted and re-checked · written October 11, 2026

  1. Community Development
  2. City of Bartlesville Community Development Department - Building Permits & Inspections (cityofbartlesville.org)
  3. Washington County Community Development Office (washingtoncountyok.gov)
  4. Environmental Complaints & Local Services
  5. On-Site Sewage Information
  6. Notice of Required Registration & Endorsement — Roofing Contractor Registration Act (2026 county census)
  7. Wells & Licensing
  8. Adopted Building Codes
  9. Zoning Regulations for the Bartlesville-Washington County Metropolitan Planning Area, as Amended through 2024
  10. Washington County Board of County Commissioners (washingtoncountyok.gov)
  11. Bartlesville: Appendix A—Zoning (Washington County)
  12. Online Payments
  13. Oklahoma Department of Environmental Quality - On-Site Sewage Programs (oklahoma.gov)
  14. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  15. Oklahoma Quick Guide
  16. Instructions for Driveway Permit Application (Oklahoma statewide rule)

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Unlike all 6 of its neighbors, Washington County requires a building permit only in limited cases.

RuleWashington CountyNowata CountyOsage CountyRogers CountyCraig CountyTulsa CountyMayes County
Building permitLimitedNot requiredRequiredRequiredNot requiredRequiredNot required
County zoningYesNoYesYesNoYesNo
Septic permitsOK DEQOK DEQOK DEQOK DEQOK DEQODEQOK DEQ

County locator

Washington County in Oklahoma

63
County map
Washington County highlighted among the Oklahoma counties · colored by Index score

How Washington County scores

63 / 100 · #35 of 77 in Oklahoma · six factors, land price, tax, rain and climate

Seclusion4480% ev.
Self-Sufficiency57100% ev.
Admin Boringness5790% ev.
Durability44100% ev.
Property Autonomy69100% ev.
Carry Cost86100% ev.

Evidence strength: 94%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$186kTypical home
0.9%Property tax
$2,791Land / acre
41.5"Annual rain
23% of yrsSevere drought
31.8 / yr (+21)Mid-century 100°F days
21.9 daysMid-century dry spell
2.2" (+4.2%)Mid-century 1-day rain
1.51×Wildfire change factor
100%Forward climate coverage
$2,106Home insurance / yr
2.6% / yrInsurance growth
0.34%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
51,349People within 30 min
1,862,981People within 2 hr
54,952Radius comparison (15 mi)
129.2People / sq mi
1.6%Federal land
96.7%Land at 15% slope or less
0%Soils rated "not limited" for septic (strict USDA rating)
0 acWorkable land screen
22.6%Wooded land
31.7 tonsBiomass / forest ac
59.1°FAvg temp

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Cities and towns in Washington County

Inside a city or town, that city usually issues building permits and sets zoning; the county’s rules above cover unincorporated land. Septic, wells and floodplain rules usually stay with the county or state everywhere.

Not yet covered: Town of Copan · Dewey · Town of Ochelata · Town of Ramona · Town of Vera

Answers from the rulebook for Washington County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Washington County rules

  • Building permitLimited

    Building construction, excavation, moving, or alteration in Washington County; the county zoning-regulation permit requirement applies within the Bartlesville-Washington County Metropolitan Planning Area rather than throughout the entire county.

    • The zoning regulations cover Bartlesville and unincorporated Washington County within three miles of Bartlesville and within a one-half-mile corridor along U.S. Highway 75 from the southernmost Bartlesville city limits to County Road 3100.
    • The county's official Community Development page states that code enforcement in unincorporated areas is limited to violations of State Statute.
    • The zoning regulations exempt railway and terminal company property, telephone exchange buildings, and specified farm buildings, agricultural crops, oil or natural gas extraction, and forestry activities from the zoning regulations, but not from other applicable local, State, or Federal laws or regulations.
    • A certificate of occupancy is also required before occupancy or use, except for railway company or terminal company property.
    “It shall be unlawful to commence the construction or the excavation for the construction of any building, or structure, including accessory buildings, or to commence the moving or alteration of any building, including accessory buildings, until the Building Official has issued a building permit for such work.”
  • County-wide zoningPresent (with conditions)

    Unincorporated Washington County land outside incorporated municipalities that lies within three miles of Bartlesville or within the specified U.S. Highway 75 corridor.

    • The regulations also apply within Bartlesville city limits.
    • The Highway 75 area is a one-mile-wide area centered on U.S. Highway 75, one-half mile on either side, from the southernmost Bartlesville city limits to County Road 3100, excluding Prairie View Acres subdivision on County Road 2900.
    • The territory is called the Bartlesville-Washington County Metropolitan Planning Area.
    • Agricultural buildings, agricultural crops, oil or natural-gas extraction, and forestry activities in the unincorporated county area of the Metropolitan Planning Area are exempt from these zoning regulations under the cited statute.

    Bartlesville proximity: 3 miles (unincorporated land outside incorporated municipalities) · U.S. Highway 75 corridor width: 1 mile (centered on U.S. Highway 75; one-half mile on either side)

    “Any land within the unincorporated limits of Washington County, Oklahoma, which is not included within the territorial jurisdiction of any incorporated municipality, that lies within three (3) miles of the city limits of Bartlesville, Oklahoma; and”
    One more reviewed finding on this topic
  • Local zoningVaries (with conditions)

    County aggregate of local zoning: Bartlesville municipal zoning and the Bartlesville-Washington County Metropolitan Planning Area zoning apply only in specified areas; county code enforcement elsewhere is limited to violations of State Statute.

    • This is an aggregate conclusion and does not mean Washington County administers every local ordinance.
    • The official zoning regulations cover Bartlesville city limits and specified unincorporated county areas within three miles of Bartlesville and along the Highway 75 corridor.
    • Other incorporated municipalities may have their own local rules.
    • County code-enforcement services in unincorporated areas are limited to violations of State Statute.
    “This territory shall be known as the Bartlesville-Washington County Metropolitan Planning Area.”
  • Minimum lot sizeDistrict specific (with conditions)

    Minimum lot area in the unincorporated Washington County portion of the Bartlesville-Washington County Metropolitan Planning Area.

    • The zoning regulations apply only within the defined metropolitan planning area.
    • Lots in platted RE subdivisions may be less than two acres if gross density does not exceed 0.5 dwellings per acre.
    • RM and RT districts have separate minimum lot area per dwelling unit requirements.

    RA minimum lot area: 5 acres per lot and 5 acres per dwelling unit acres · RE minimum lot area: 2 acres per lot and 2 acres per dwelling unit acres (Platted subdivisions may be less than 2 acres if gross density does not exceed 0.5 dwellings per acre.) · RS-12 minimum lot area: 12,000 sq. ft. per lot and per dwelling unit sq. ft. · RS-10 minimum lot area: 10,000 sq. ft. per lot and per dwelling unit sq. ft. · RS-7 minimum lot area: 7,000 sq. ft. per lot and per dwelling unit sq. ft. · RS-5 minimum lot area: 5,000 sq. ft. per lot and per dwelling unit sq. ft. · RM-3 minimum lot area: 5,000 sq. ft. per lot; 3,000 sq. ft. per dwelling unit sq. ft. · RM-1.5 minimum lot area: 5,000 sq. ft. per lot; 1,500 sq. ft. per dwelling unit sq. ft. · RM-.75 minimum lot area: 5,000 sq. ft. per lot; 750 sq. ft. per dwelling unit sq. ft. · RT minimum lot area: 5,000 sq. ft. per lot; 2,500 sq. ft. per dwelling unit sq. ft.

    “RA (Residential Agriculture) 5 Acres 5 Acres 200 20% 50** 20 50** 20 50** 3 45”
    One more reviewed finding on this topic
    • District specific (with conditions) — Residential zoning districts within the Bartlesville-Washington County zoning jurisdiction.
      “RA Residential Agriculture District (5 acres minimum lot area per dwelling unit).”
  • SetbacksSpecified

    One mobile home parked for residential purposes in the rear yard of a lot in an RA, RS, or RM District where a residential structure already exists, within the applicable Washington County zoning jurisdiction.

    • The Board of Adjustment must approve the parking after an application by the lot owner.
    • The Board must find that the occupant or proposed occupant would suffer material hardship, other than financial hardship, if the mobile home were located in a mobile home park.
    • The mobile home must be at least 10 feet from any lot line or residential structure.
    • No rent or other compensation may be paid for parking the mobile home on the lot.
    • The permit may last no more than 180 days and may be renewed by the Board of Adjustment.

    mobile home distance from any lot line or residential structure: >= 10 feet · permit duration: <= 180 days (May be renewed by the Board of Adjustment.)

    “Where a residential structure has been built on a lot in an RA, RS or RM District, the Board of Adjustment may, on application of the owner of such lot, permit the parking of one mobile home in the rear yard of such lot, provided the Board makes a finding to the effect that the occupant or proposed occupant of the mobile home would suffer a material hardship, other than a financial hardship, if the mobile home were to be located in a mobile home park rather than on said lot. Such use shall be permitted only subject to the following conditions: A. That the mobile home be located not less than 10 feet from any lot line or residential structure, and B. That no rent or other compensation be paid for the privilege of parking said mobile home on said lot. A permit granted under this provision shall be for a period of no more than 180 days, after which it may be renewed by the Board of Adjustment.”
    One more reviewed finding on this topic
  • Living in an RVLimited

    Recreational vehicles stored on residential-district lots in the Bartlesville metropolitan planning area (Bartlesville and unincorporated Washington County within 3 miles of city limits and along US 75 to CR 3100). Unzoned unincorporated land elsewhere is not covered.

    • Section 7.5.2 is the storage rule for large recreational vehicles in residential districts
    • Temporary living for visitors is the only exception to the ban on living in an RV on the premises
    • RV parks for transient or residential RVs are allowed in RA, RT-1, RT-2, C-6, C-7 or M districts only by special zoning permit from the board of adjustment
    • Document is the 2015 amended version; current version not confirmed
    • Land outside the planning area was not found to have a county RV rule
    “no recreational vehicle shall be used for living, sleeping, or housekeeping purposes on the premises, except for temporary living purposes for visitors.”
  • Permit feesPublished (with conditions)

    Building and related permit fees under the Bartlesville-Washington County zoning regulations, including the county portion of the metropolitan planning area.

    • Fees are in addition to fees required by County, State, or Federal government and authorized governmental administrative fees.
    • Publication notices are billed to and paid by the applicant.
    • No part of the permit fee is refundable.
    • Factory-built housing complying with applicable building codes is charged as new residential construction.
    • The regulation states that certain permit fees may be waived administratively for federal, state, and local governmental units funded by ad-valorem taxes; no other fees may be waived.

    residential new construction building permit: 8 cents per sq. ft.; minimum $100; includes initial plan review, floodplain determination, and certificate of occupancy; no upfront plan review fee USD · residential remodel building permit: $50 flat fee; includes initial plan review, floodplain determination, and certificate of occupancy; no upfront plan review fee USD · mobile home building permit outside mobile home park: 85 USD (Includes initial plan review, floodplain determination, and certificate of occupancy; no upfront plan review fee.) · mobile home building permit inside mobile home park: 65 USD (Includes initial plan review, floodplain determination, and certificate of occupancy; no upfront plan review fee.) · certificate of zoning compliance: 20 USD · certificate of occupancy without building permit: 20 USD

    “New Construction: | 8 cents per sq. ft., minimum $100, includes initial plan review and floodplain determination fees and certificate of occupancy; No upfront plan review fee”

Oklahoma rules that apply here

  • Owner-builder exemptionConditional

    Owners, certain lessees, and family or employees performing roofing work on qualifying residential, farm, commercial, or single-family dwelling property in Oklahoma.

    • An actual owner of residential or farm property may physically perform roofing services or have family or employees perform them on property owned by the person.
    • Owners of commercial properties, including residential rental properties consisting of four dwelling units or less, must act as their own roofing contractor, provide all material supervision themselves, and install roofing materials according to the IBC as adopted by the OUBCC or the manufacturer's installation instructions.
    • A lessee of residential property must have the owner's consent and must perform the roofing work personally or with the lessee's own employees, using materials installed according to the IBC as adopted by the OUBCC or the manufacturer's installation instructions.
    • An owner building or improving a single-family dwelling residence for the owner's occupancy and not intended for sale or rent must act as the owner's own roofing contractor, provide all material supervision, and install materials according to the IRC or IBC as adopted by the OUBCC or the manufacturer's installation instructions.
    • A person working on the person's own property or that of an immediate relative without compensation is listed as exempt.
    • Non-exempt roofing contractors must register annually with the CIB; the source states that the application requires the required fee and documentation but does not state an amount.
    • This source concerns state roofing registration and does not establish that local building permits or inspections are waived.

    residential rental property size: <= 4 dwelling units (The exemption is stated for residential rental properties consisting of four dwelling units or less.)

    “An actual owner of residential or farm property who physically performs, or has family or employees perform roofing services on property owned by such person;”
    4 more reviewed findings on this topic
    • Available (with conditions) — An individual performing electrical work on the individual's own property or residence in Oklahoma.
      “3. An individual to hold a license before doing electrical work on his own property or residence except as may be required by local ordinances and resolutions.”
    • Conditional — A property owner of record or authorized representative performing minor mechanical repairs in Oklahoma.
      “1. A person who is the property owner of record, or his or her authorized representative, when performing minor repair which shall include, but not be limited to, cleaning, adjusting, calibrating and repair of mechanical system parts and the replacement of fuses and room thermostats, and other minor repairs which shall not include any repair which could violate the safe operation of the equipment;”
    • Conditional — An individual performing electrical work on the individual's own property or residence under the Oklahoma Electrical License Act.
      “hold a license before doing electrical work on his own property or residence except as may be required by local ordinances and resolutions.”
    • Available (with conditions) — An individual performing plumbing work on the individual's property of residence in Oklahoma.
      “The provisions of The Plumbing License Law of 1955 shall not apply to: [...] 6. An individual who performs plumbing work on such individual’s property of residence.”
  • Building code adoptedAdopted

    Commercial building construction throughout Oklahoma, subject to the OUBCC amendments and lawful requirements of other jurisdictions.

    • The adopted code is the 2024 International Building Code as amended and modified by OUBCC rules.
    • The 2024 IBC became effective September 14, 2026.
    • The statewide code is a minimum standard; other jurisdictions may amend or alter it only pursuant to Oklahoma law and OUBCC administrative rules.
    • The International Building Code 2021 Edition was expressly not adopted for any purpose.
    • None of the IBC 2024 appendices are included in the statewide minimum code; other jurisdictions may adopt appendices under 59 O.S. § 1000.29.
    • All IBC 2024 chapters and provisions, including exceptions, not specifically modified, deleted, moved, or removed by the rules are adopted without modification.
    • Chapter 34 is not adopted and is not part of the statewide minimum code.

    code edition: International Building Code 2024 (as amended and modified by OUBCC) · effective date: 2026-09-14

    “748:20-2-1., 748:20-2-2., 748:20-2-3., and 748:20-2-4., adopt the IBC® 2024 edition, without appendices and establishes the IBC® 2024 edition as the statewide minimum code for commercial construction in the State of Oklahoma.”
    3 more reviewed findings on this topic
    • Adopted (with conditions) — State-adopted building codes applicable to construction in Oklahoma, including jurisdictions without a local amendment authority.
      “Base model codes have been adopted by reference and amended at the state level. Only the state amendments are available on this website for viewing and download.”
    • Adopted — Minimum building-code standards for residential and commercial construction throughout Oklahoma, including construction subject to local county or municipal enforcement.
      “Base model codes have been adopted by reference and amended at the state level.”
    • Adopted — Minimum building codes for residential and commercial construction throughout Oklahoma, including construction in unincorporated areas.
      “Codes and standards adopted by the Commission shall be the minimum standards for residential and commercial construction in this state.”
  • InspectionsLimited

    Projects permitted and inspected by the Oklahoma State Fire Marshal; this includes International Building Code use and occupancy classifications in geographic areas where local authorities do not require a building permit.

    • The project must be permitted.
    • Inspections test compliance with the permit and applicable codes.
    • Inspection requests must allow at least 7 days of advance notice.
    • All required permits must be issued and on site before a 50% inspection.
    • All permits and addendums, if applicable, must be issued before the 100% inspection.
    • Where a jurisdiction has a current agreement authorizing it to conduct plan reviews and inspections, the State Fire Marshal states that an additional state permit is not needed.

    inspection request advance notice: >= 7 days · re-inspection fee after failed 100% final inspection: 100 USD per inspection site visit

    “All permitted projects are required to be inspected for compliance with the permit and the applicable codes.”
  • Certificate of occupancyLimited

    Certificates of Occupancy issued by the Oklahoma State Fire Marshal for projects within its permitting and inspection process.

    • A completed Certificate of Completion – Final Statement of Compliance Form must be on site at final inspection; otherwise the final inspection fails.
    • For projects designed and sealed by a registered design professional, the architect or engineer is responsible for completing the form and obtaining required signatures.
    • For projects not designed or sealed by a registered design professional, the owner is responsible for completing the form and obtaining required signatures.
    • Occupancy or use before furnishing the form when required is expressly forbidden unless and until a satisfactory inspection has been made by the State Fire Marshal or certified representative.
    • The State Fire Marshal's process does not establish that every project statewide needs a state-issued certificate; local authorities may administer plan reviews and inspections under current authority-having-jurisdiction agreements.
    “A final inspection report and or a Certificate of Occupancy will not be issued without this form being completed in its entirety. If this form is not on-site at the final inspection, the inspection will be FAILED.”
  • Tiny homesLimited

    A tiny home that is constructed or used as a detached one- or two-family dwelling or townhouse within the stated scope of Oklahoma's adopted residential code.

    • The statewide residential code applies to construction, use, occupancy, and location of qualifying detached one- and two-family dwellings and townhouses.
    • The stated code scope is limited to buildings not more than three stories above grade plane in height and having a separate means of egress.
    • The source does not establish a statewide land-use entitlement for a tiny home; county and municipal land-use administration may separately govern siting and occupancy.

    maximum height: <= 3 stories above grade plane (The code scope also requires a separate means of egress.)

    “The provisions of this code shall apply to the construction, alteration, movement, enlargement, replacement, repair, equipment, use and occupancy, location, removal and demolition of detached one- and two-family dwellings and townhouses not more than three stories above grade plane in height with a separate means of egress and their accessory structures not more than three stories above grade plane in height.”
  • Manufactured homesLimited

    Occupied manufactured homes installed in Oklahoma.

    • An occupied manufactured home is deemed a permanent installation.
    • All new manufactured homes installed in Oklahoma, including site preparation, must follow HUD's Manufactured Home Model Installation Standards (24 CFR Part 3285) or DAPIA-approved manufacturer installation instructions.
    • Previously occupied manufactured homes may be installed under the manufacturer's installation manual, the generic set in the rules, or an approved plan by a professional engineer or registered architect.
    • Using an installer not licensed by the Oklahoma Used Motor Vehicle and Parts Commission is an unacceptable procedure and may subject the contracting dealer to liabilities and penalties.
    • For permanently installed manufactured homes, the installer must use the manufacturer's installation instructions or the local authority having jurisdiction to determine the applicable frost line.
    “Installation of a manufactured home shall be deemed a permanent installation in any circumstance in which the manufactured home will be occupied.”
  • Who permits septicState (with conditions)

    Individual and small public on-site sewage treatment systems in Washington County and elsewhere in Oklahoma.

    • DEQ assigns an Authorization to Construct to the local DEQ Environmental Specialist based on property location.
    • Alternative systems require DEQ approval before installation.
    “After the ATC is purchased, it is assigned to the local DEQ Environmental Specialist (ES),  based on the location of the property, for review and issuance.”
    3 more reviewed findings on this topic
    • State — Individual and small public on-site sewage treatment systems affecting Washington County.
      “After the ATC is purchased, it is assigned to the local DEQ Environmental Specialist (ES), based on the location of the property, for review and issuance.”
    • State — Individual and small public on-site sewage treatment systems serving Washington County.
      “ECLS administers Oklahoma’s on-site sewage treatment program. This includes soil tests, on-site system designs, inspection of system installations and regulatory oversight of certified installers, certified profilers and septage pumpers and transporters.”
    • State — Statewide administration and regulatory oversight of individual and small public on-site sewage treatment systems in Oklahoma.
      “ECLS administers Oklahoma’s on-site sewage treatment program.”
  • Septic permitRequired

    Installing a new or modifying an existing on-site sewage treatment system in Washington County.

    • An Authorization to Construct must be purchased and issued by DEQ before installation or modification.
    • The Report for On-Site Sewage must be reviewed by DEQ before the ATC may be issued.
    • Alternative systems must be approved by DEQ before installation.
    • Program fees increased effective July 1, 2026 under the annual CPI adjustment; applications submitted on or after that date are subject to the new fee schedule.
    “an Authorization to Construct (ATC) must be purchased and issued by DEQ.”
    3 more reviewed findings on this topic
    • Required — New or modified on-site sewage treatment systems serving property in Washington County.
      “Before installing a new or modifying an existing on-site sewage treatment system, an Authorization to Construct (ATC) must be purchased and issued by DEQ.”
    • Required — New or modified on-site sewage treatment systems in Washington County.
      “Before installing a new or modifying an existing on-site sewage treatment system, an Authorization to Construct (ATC) must be purchased and issued by DEQ.”
    • Required — Installing a new or modifying an existing individual or small public on-site sewage treatment system statewide.
      “Before installing a new or modifying an existing on-site sewage treatment system, an Authorization to Construct (ATC) must be purchased and issued by DEQ. After the ATC is purchased, it is assigned to the local DEQ Environmental Specialist (ES), based on the location of the property, for review and issuance. The Report for On-Site Sewage (581) must be reviewed by DEQ before the ATC may be issued.”
  • Septic inspectionRequired

    New installations and modifications to on-site sewage systems in Washington County.

    • Inspection and approval must occur before the system may be placed into operation.
    • Inspection may be performed by DEQ, or the system may be installed, self-inspected, and approved by a certified installer.
    • Certified-installer final inspections must be submitted to DEQ within 15 days of completion.
    • Final inspections are documented on DEQ Form 641-576.

    certified-installer final inspection submission deadline: 15 days (after completion)

    “All new installations or modifications to an on-site sewage system must be inspected and approved by DEQ or installed, self-inspected and approved by a certified installer before the system may be placed into operation. Final inspections are documented on DEQ Form 641-576. The information provided must clearly identify all system components, their location on the property, and minimum required separation distances per Chapter 641. Final inspections performed by a certified installer must be submitted to DEQ within 15 days of completion.”
    4 more reviewed findings on this topic
    • Required — New installations or modifications to on-site sewage systems in Washington County.
      “All new installations or modifications to an on-site sewage system must be inspected and approved by DEQ or installed, self-inspected and approved by a certified installer before the system may be placed into operation.”
    • Required — New installations or modifications to on-site sewage systems in Washington County.
      “All new installations or modifications to an on-site sewage system must be inspected and approved by DEQ or installed, self-inspected and approved by a certified installer before the system may be placed into operation.”
    • Required — Construction or operation of a small public sewage treatment system or individual sewage treatment system in Oklahoma.
      “No small public sewage treatment system or individual sewage treatment system shall be constructed or operated unless such system, when constructed, complies with requirements prescribed by the Environmental Quality Board as determined by an inspection performed by the Department of Environmental Quality or a person authorized by the Department.”
    • Not required — An existing individual sewage disposal system before a service connection to a public water supply system in Oklahoma.
      “The Department of Environmental Quality shall not require a departmental inspection of an existing individual sewage disposal system prior to a service connection to a public water supply system.”
  • Off-grid sanitationAllowed (with conditions)

    On-site sewage treatment systems used by Oklahoma homes and businesses where sewage is treated on the property rather than through a centralized sewer system.

    • The Report for On-Site Sewage determines which system types are allowed for the property and states minimum dispersal requirements based on residence size or small-public-system daily flow.
    • A DEQ Authorization to Construct is required before installing or modifying the system.
    • All new installations or modifications require DEQ inspection and approval, or certified-installer self-inspection and approval, before operation.
    • Alternative systems require DEQ approval before installation.
    • The system design depends on lot size and shape, residence size, and soil-test results.
    “determines what types of on-site systems are allowed for the property.”
  • Well permitRequired

    Groundwater wells drilled or used for non-domestic purposes in Oklahoma, including public water supply, industrial, commercial, oil and gas, poultry, medical-marijuana, and irrigation of more than 3 acres.

    • A well drilling contractor must obtain OWRB authorization and approval before drilling.
    • Authorization will not be issued unless the well location has an active groundwater use permit.
    • Groundwater permit applications must be filed before taking or using groundwater and before drilling.
    • The applicant must own or lease the land, the land must overlie a fresh groundwater basin or subbasin, the proposed use must be beneficial, and waste by depletion or pollution must not occur.
    • Failure to submit an intent-to-drill application when required may result in a penalty of up to $5,000 per day per violation.

    irrigation threshold for intent-to-drill authorization: > 3 acres (Irrigation of less than 3 acres is listed as not requiring intent-to-drill authorization.) · application response time: 5 business days approximately (OWRB staff response time stated on the Wells & Licensing page.) · maximum penalty for failure to submit required intent-to-drill application: <= 5000 USD per day per violation

    “Any well drilling contractor who intends to drill a groundwater well for non-domestic use must apply for authorization”
    5 more reviewed findings on this topic
    • Limited — Groundwater-well drilling in Washington County.
      “Any well drilling contractor who intends to drill a groundwater well for non-domestic use must apply for authorization and receive approval from the OWRB prior to drilling. Authorization will not be issued for any well location that does not have an active groundwater use permit. Intent to drill authorizations are required for groundwater wells used for public water supply, industrial use, medical marijuana grow operations, poultry operations, irrigation of more than 3 acres, oil and gas recovery, and any other commercial use. Intent to drill authorizations are not required for domestic groundwater wells used for household purposes, livestock (up to the land’s grazing capacity), and irrigation of less than 3 acres.”
    • Not required — Domestic groundwater wells used for household purposes, qualifying livestock, and irrigation of less than three acres in Washington County.
      “Intent to drill authorizations are not required for domestic groundwater wells used for household purposes, livestock (up to the land’s grazing capacity), and irrigation of less than 3 acres.”
    • Required — Non-domestic groundwater wells and listed commercial, industrial, public-supply, poultry, oil-and-gas, and greater-than-three-acre irrigation uses in Washington County.
      “Any well drilling contractor who intends to drill a groundwater well for non-domestic use must apply for authorization and receive approval from the OWRB prior to drilling. Authorization will not be issued for any well location that does not have an active groundwater use permit.”
    • Not required — Domestic use of groundwater and domestic groundwater wells used for household purposes, qualifying livestock, or irrigation of less than three acres statewide.
      “A water permit is not required for domestic use of groundwater”
    • Not required — Domestic groundwater use in Oklahoma, including household purposes, livestock up to the land’s grazing capacity, and irrigation of less than 3 acres.
      “A water permit is not required for domestic use of groundwater”
  • Mandatory utility hookupWater (with conditions)

    A new customer's connection to an Oklahoma public water supply system.

    • The public water supply system must not allow the connection unless the customer has an approved sewage disposal system defined in OAC 252:641 or OAC 252:656.
    • This is a condition on a public water supply system allowing a new customer connection; it does not itself require every property to connect to public water.
    • The cited rule was amended effective September 15, 2025.
    “PWS systems must not allow the connection of a new customer without an approved sewage disposal system, as defined in OAC 252:641 (Individual and Small Public On-Site Sewage Disposal Systems) or OAC 252:656 (Water Pollution Control Construction).”
  • Agricultural exemptionAvailable (with conditions)

    Construction of a farm home or other farm building under the Title 19 city-county planning and zoning act.

    • The statute states that no fees or permits are required for construction of any farm home or other farm building under this Act.
    • The quoted exemption is limited to the construction described in the statute and does not establish that every other state or local approval is waived.
    “No fees or permits shall be required for [...] any farm building.”
    One more reviewed finding on this topic
    • Available (with conditions) — The zoning power conferred by Oklahoma Title 19 on municipalities and counties, including county unincorporated areas, as applied to usual farm buildings used for agricultural purposes and the planning of agricultural crops.
      “shall not apply to [...] the usual farm buildings for agricultural purposes”
  • Subdividing landRegulated (with conditions)

    Residential developments outside Oklahoma municipal corporate limits, including plat approval and recording requirements.

    • A person creating or intending to create a residential development outside a city or town must file a plat describing sewage-treatment methods with the Oklahoma Department.
    • Department approval must be obtained before recording the plat, offering lots for sale, or beginning construction within the residential development.
    • The plat must include water-supply and sewage-treatment information, actual lot sizes, and the location of public water-supply sources within 300 feet.
    • The plat must be filed in the county land records after Department approval.

    Department approval effective period: 30 days after filing unless specifically rejected earlier · public water-supply search radius: 300 feet

    “Approval of the plat shall be obtained prior to recording the plat”
  • Driveway accessLimited

    Driveways connecting to Federal or State Highway rights-of-way in Oklahoma.

    • An approved Driveway Agreement is required before work on the State Highway right-of-way.
    • The application requires an original Driveway Agreement and a sketch or site plan.
    • Drainage must be properly disposed of and runoff may not run onto the highway.
    • If the driveway is within city limits, the Agreement must be signed or permitted in writing by a city authority.
    • No alteration or relocation may be made without prior written permission from ODOT or its authorized representatives.
    • The permit expires if the driveway is not constructed within six months after the effective date unless a written extension is requested.

    permit expiration period: 6 months (Unless the applicant requests a written time extension from ODOT.)

    “Under no circumstances shall the applicant be permitted to do any work on the State Highway right-of-way until an approved copy of the application is in hand.”
  • Building in a floodplainLimited

    Oklahoma's statewide floodplain-management framework and OWRB coordination of participating communities; the sources do not establish one uniform statewide permit requirement for all private development.

    • The OWRB provides guidance and coordination rather than administering every local floodplain regulation.
    • Floodplain regulations are developed and enforced by local participating communities in designated flood hazard areas.
    • Participation in the National Flood Insurance Program is community-based; local requirements can therefore vary by participating community.
    • The Oklahoma Floodplain Management Act was passed in 1980.
    • A 2004 amendment requires floodplain administrators to become accredited through the OWRB.
    “The Oklahoma Floodplain Management Act, passed in 1980, authorizes communities to develop floodplain regulations, designate flood hazard areas, and establish floodplain boards.”
    One more reviewed finding on this topic
    • Required — Development in identified special flood hazard areas in NFIP-participating Oklahoma communities, including county-administered unincorporated areas where applicable.
      “NFIP participating communities must regulate all development in their identified floodplain (SFHA). This means requiring permits for any man-made changes to real estate – not just for new buildings, but changes to existing structures, as well as non-structural development.”
  • Permit processPartial

    Projects subject to Oklahoma State Fire Marshal building-plan review.

    • All projects are reviewed through the OKSFM Accela Citizen Portal.
    • Plan review is not done over email.
    • Paper submittals mailed or dropped off at the office are not accepted.
    • Applicants must set up a login and password.
    • The page states that plans must meet minimum state codes adopted by the OUBCC.
    “All projects are reviewed through the OKSFM Accela Citizen Portal. Plan review is not done over email and paper submittals mailed or dropped off in the office are not accepted.”
    One more reviewed finding on this topic
    • Published (with conditions) — DEQ on-site sewage permitting process applicable to Washington County.
      “Pay online for on-site sewage authorizations/permits to construct, soil tests, existing system evaluations, and well evaluations quickly and easily, 24-hours a day.”
  • county zoning authorityLimited

    County zoning authority in unincorporated areas under Oklahoma Statutes Title 19, Sections 868.1 through 868.22.

    • The authority applies only to counties having a population in excess of 500,000 according to the latest Federal Decennial Census.
    • The zoning authority is for unincorporated areas of the county.
    • Existing lawful uses are protected except as otherwise provided by the statute.
    • The statute excludes public utilities subject to Corporation Commission or similar state or federal regulation, usual farm buildings for agricultural purposes, planting agricultural crops, and extraction of minerals.
    • Zoning regulations must address the statutory public-health, safety, welfare, transportation, utilities, public facilities, and land-use purposes.

    county population threshold: > 500000 persons (latest Federal Decennial Census)

    “population in excess of five hundred thousand (500,000)”
    2 more reviewed findings on this topic
    • Limited — County zoning regulations for unincorporated areas under Title 19, §§19-868.1 through 19-868.22.
      “The board of county commissioners is hereby empowered to adopt zoning regulations effective in the unincorporated areas of the county for the purposes of promoting the health, safety, peace, morals, comfort and the general welfare of the inhabitants; lessening danger and congestion in public transportation and travel; securing safety from fire and other dangers; preventing overcrowding of land; avoiding undue concentration of population; providing adequate police protection, transportation, water, sewerage, schools, parks, forests, recreational facilities, airports, military and naval facilities, and other public requirements; and preventing undue encroachment thereon. The zoning power hereby conferred shall not be exercised so as to deprive the owner of any existing property of its use or maintenance for the purpose to which it is then lawfully devoted except as hereinafter provided; nor shall the provisions of this act apply to the erection, installation and use of structures and equipment by public utilities subject to the jurisdiction and regulation of the Corporation Commission of the State of Oklahoma or other similar state or federal regulatory bodies; nor to the erection or use of the usual farm buildings for agricultural purposes, the planting of agricultural crops or the extraction of minerals.”
    • Limited — County planning and zoning through a cooperative city-county planning commission for the unincorporated area of an eligible county.
      “county plan within the unincorporated area”
  • county building authorityLimited

    County adoption and enforcement of building or fire codes in unincorporated areas under 19 O.S. § 868.17A.

    • The authority applies only in unincorporated areas.
    • The provision does not apply to counties not subject to 19 O.S. §§ 868.1 through 868.22; those provisions apply only to counties with a population in excess of 500,000 according to the latest Federal Decennial Census.
    • Public-utility electric supply and communication lines regulated by the Corporation Commission are excluded.
    • The county may prescribe permits, notices, inspection procedures, and reasonable fees sufficient to cover inspection and enforcement expenses.
    • Building inspectors must be licensed by Oklahoma.

    county population threshold: > 500000 persons (latest Federal Decennial Census) · inspection and enforcement fees: reasonable and sufficient to meet inspection and enforcement expense

    “may, by resolution, adopt building codes, fire codes”
    One more reviewed finding on this topic
    • Limited — County adoption and enforcement of building and fire codes, including permits and inspections, in unincorporated areas under Title 19, §§19-868.1 through 19-868.22.
      “The board of county commissioners may, by resolution, adopt building codes, fire codes, or both building and fire codes which shall be designed for the purpose of promoting, benefiting, and protecting the public health, safety and welfare of the people of this state. The codes adopted pursuant to this section shall be applicable only in the unincorporated areas of the county. All building materials, equipment, and methods of installation or construction shall be at least the equivalent of that prescribed in any building or fire code adopted by the board of county commissioners in quality, strength, effectiveness, fire resistance, durability, and safety. Any codes adopted pursuant to this section shall not apply to the installation and maintenance of electric supply and communication lines of public utilities and public service companies which are regulated by the Corporation Commission. The provisions of this section shall not apply to any area located within any county not subject to the provisions of Section 868.1 through 868.22 of Title 19 of the Oklahoma Statutes. Building inspectors may be employed by a county to enforce building or fire codes. The building inspectors shall be licensed by the State of Oklahoma. The building inspectors shall enforce the provisions of any building or fire code adopted pursuant to this section and shall be authorized to inspect all buildings for the purpose of discharging the duties imposed by this section or by any building or fire code adopted by the board of county commissioners. The board of county commissioners may adopt rules to carry out the inspections to enforce the building or fire codes, may prescribe the necessary permits, notices, and inspection procedures and may set and determine fees. The fees shall be reasonable and shall be sufficient to meet the expense of inspection and enforcement of the building or fire codes.”

Inside cities and towns in Washington County

Municipal rules found while researching the county. They apply inside that city or town, not to unincorporated land.

  • Building permitRequired

    Structural construction, alteration, demolition, remodeling, reconstruction, and listed accessory construction within the City of Bartlesville.

    • The city page says permits are required unless otherwise exempted.
    • Finish work such as painting, papering, tiling, carpeting, cabinets, and countertops is listed as exempt.
    • Replacement of existing doors and windows of the same size and operation is listed as exempt.
    • Additional permits may apply to floodplain development, electrical, mechanical, plumbing, right-of-way, fire, sign, tent, and pool work.
    “A building permit is required for any structural construction, alteration, demolition, remodel or reconstruction.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Zoning districts — Official publication of zoning districts affecting unincorporated Washington County.
  • Minimum dwelling size — Minimum dwelling size in unincorporated Washington County
  • Lot coverage — Lot-coverage limits in unincorporated Washington County.
  • Building height — Building-height limits in unincorporated Washington County.
  • Camping on your land — Temporary camping on private land in unincorporated Washington County.
2 more unanswered
  • Accessory dwellings
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Washington County, Oklahoma

Is Washington County a good place to live off-grid or homestead?

Washington County scores 63/100 on the Bolthole Index, a solid county profile. Its strengths: manageable long-term carry cost and a stronger property-autonomy legal backdrop.

How much does land cost in Washington County, Oklahoma?

Land in Washington County runs about $2,791 per acre, based on the latest county data.

What is the water situation in Washington County?

Washington County gets about 41.5" of rain a year, with severe drought in roughly 23% of years.

How remote is Washington County?

A representative private-land location has about 51,349 people within a 30-minute drive and 1,862,981 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Washington compares in Oklahoma

Compare side-by-side →See all 77 Oklahoma counties ranked →