Adams County, OH Building Permits, Zoning & Septic Rules

Adams County, Ohio does not appear to administer residential building permits at the county level, but another certified department may cover a specific property¹². Ohio waives residential plan submission only where no certified municipal, township or county residential building department has jurisdiction³. Ask the Adams County Commissioners who covers the parcel before building⁴.

At a glance

Building permit: Adams County appears not to administer a residential permit program; confirm whether another certified department has jurisdiction¹³
Zoning: No countywide program was confirmed; West Union has local zoning and other parcel-specific rules require local confirmation⁵⁶
Septic permits: Health Department site review and an installation or alteration permit are required⁷⁸
RV or tiny-home living: Private-land occupancy remains unconfirmed; campground licensing does not answer the single-RV question⁹⁵
Owner-prepared plans: Ohio allows a non-architect to prepare and file plans for qualifying residential buildings¹⁰
Private well: A board-of-health permit is required before constructing, altering or sealing a private water system¹¹
Septic soils: Only 2.8% of county soils are rated without severe limits for a conventional drain field¹²

Who to call

Also useful

Adams County Commissioners

County government contact for identifying the appropriate local office when a permitting or zoning authority is not confirmed

937-544-3286

[email protected]

215 North Cross Street Suite 102 West Union, OH 45693

Septic permits

Adams County Health Department, Environmental Health Division

Household sewage treatment systems and private water systems in Adams County

937-544-5547

[email protected]

560 Rice Drive West Union, Ohio 45693

Online permits →

Contact details are copied from each office’s official page and were checked against it on September 29, 2026.

Do you need a building permit in Adams County, Ohio?

Adams County does not appear to administer residential building permits, but we could not confirm that no certified municipal or township department covers a particular parcel¹. Ohio's residential code is uniform where a certified residential building department has jurisdiction, and covered work needs that department's approval before it begins¹³². If no certified residential department has jurisdiction, the owner need not make the state-law residential plan submission³. Where approval is required, the work is inspected after the owner or representative notifies the department that it is ready¹⁴. Buildings governed by the Ohio Building Code cannot be occupied before the building official issues the applicable occupancy or completion certificate¹⁵.

Who is the Adams County building department?

We could not confirm a county building department or identify the certified residential department for every Adams County parcel. Start with the Adams County Commissioners at 215 North Cross Street Suite 102 in West Union and ask which certified department has jurisdiction⁴. A certified department may act only for the building types and subjects covered by its certification¹⁶. Ask the identified department for its application, fee schedule, inspection list and occupancy requirements before work begins. Ohio lets a non-architect prepare and file plans for a qualifying residential building, but that is not an exemption from applicable approvals or inspections¹⁰. A qualifying agricultural structure may receive a building-law exemption when a county or township zoning inspector certifies its agricultural use; that does not turn a residence into an exempt farm building¹⁷.

Does Adams County have zoning?

Adams County appears not to administer countywide zoning, but we could not confirm the current rule for every township⁵. The Village of West Union does have its own zoning districts and controls for land, buildings, yards and setbacks; those municipal rules apply only inside the village⁶. Ask the township or municipality governing the parcel about allowed uses, setbacks, lot size, lot coverage and height before relying on land for an RV, tiny home or accessory dwelling. Permanently sited manufactured homes receive state protection in a county zone where single-family homes are allowed, subject to the same generally applicable residential zoning standards and private deed restrictions¹⁸. Agricultural zoning limits are also conditional, so obtain the applicable zoning determination instead of assuming every barn is exempt¹⁹.

How do septic permits work in Adams County?

The Adams County Health Department's Environmental Health Division handles household sewage treatment systems and private water systems²⁰²¹. A site review comes before the application, and no new or replacement system or alteration may proceed without the board of health's permit⁸. Forms for installations, repairs and alterations may be submitted by fax, mail or office drop-off²². Plan early because only 2.8% of county soils are rated without severe limitations for a conventional drain field¹². Published charges include a $100 septic reinspection and a $250 loan evaluation; installing without a permit adds a penalty equal to 25% of the permit fee plus the permit fee itself²³. The board must inspect the completed system again within twelve months after installation approval²⁴.

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

We could not confirm a countywide rule for living in a single RV or tiny home on private land. Ask the parcel's township or municipality whether the unit is treated as an RV, dwelling or manufactured home and what occupancy and setback rules apply⁵. Ohio's licensed-park law permits human habitation on an RV or camping space for the term of the park's license, but it does not answer the single-RV private-land question⁹. Ohio's temporary park-camp limits apply to gatherings of five or more camping units, not automatically to one RV on private land²⁵. A manufactured home generally needs a state inspection seal before occupancy, while local siting rules may still apply²⁶. Any occupied unit without sanitary sewer still needs an approved sewage system²⁷.

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

Identify the township or municipality and ask about allowed dwelling types, setbacks and parcel standards; West Union has local zoning, while rules elsewhere remain parcel-specific⁶⁵.

Ask the Adams County Commissioners which certified residential building department, if any, covers the site⁴.

Contact the Adams County Health Department for a septic site review before fixing the house location; most county soils carry severe conventional-drain-field limitations²⁰¹².

Obtain the sewage-system permit and a private-water-system permit if constructing or altering a well⁸¹¹.

If a certified department has jurisdiction, secure plan approval, call for required inspections and obtain the applicable occupancy approval before moving in²¹⁴¹⁵.

What should you check before buying land in Adams County?

Make septic feasibility the first contingency: only 2.8% of county soils are rated without severe limits for a conventional drain field¹². Terrain can compound siting costs because 51.6% of the county is at a slope of 15% or less and 62.6% is wooded²⁸²⁹. Confirm legal road access and ask the county about driveway approval because we could not confirm a countywide driveway rule. Ask whether the parcel is in a regulated floodplain; we could not confirm the operative permit threshold. If dividing land, Ohio regulates certain subdivision plats and may require county or regional planning-commission approval before recording when the statutory conditions apply³⁰. The Health Department lists subdivision review at $200 plus $100 per lot²³. The median property-tax bill is about $1,303 per year³¹.

Watch-outs

Do not treat the absence of a listed county building office as proof that no municipal or township building department has jurisdiction; ask the Adams County Commissioners before work begins¹⁴.
RV use, tiny-home occupancy, setbacks and minimum lot size were not confirmed countywide; West Union has local zoning, and buyers elsewhere should ask the township or municipality governing the parcel⁶⁵.
A conventional septic field may be difficult to site because only 2.8% of county soils are rated without severe limitations¹².

Sources

Written September 29, 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.

How Adams County scores

Seclusion54100% ev.

Self-Sufficiency69100% ev.

Admin Boringness7890% ev.

Durability70100% ev.

Property Autonomy35100% ev.

Carry Cost77100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$194kTypical home

0.8%Property tax

$5,254Land / acre

45.8"Annual rain

0.3% of yrsSevere drought

3.9 / yr (+3.8)Mid-century 100°F days

11.9 daysMid-century dry spell

1.74" (+7.2%)Mid-century 1-day rain

1.94×Wildfire change factor

100%Forward climate coverage

$1,391Home insurance / yr

1.5% / yrInsurance growth

2.17%Nonrenewal rate

county median (2+ published ZIPs)Insurance basis

18,846People within 30 min

3,952,868People within 2 hr

33,259Radius comparison (15 mi)

47.1People / sq mi

0%Federal land

51.6%Land at 15% slope or less

2.8%Septic soil without severe limits

8,507 acWorkable land screen

62.6%Wooded land

60.2 tonsBiomass / forest ac

54°FAvg temp

Answers from the rulebook for Adams County

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

Adams County rules

Who permits septicCounty
Household sewage treatment systems in the Adams County General Health District.
- The Adams County Health Department Environmental Health Division administers inspection and licensing functions for household sewage treatment systems.
- Ohio law allows a board of health to adopt more stringent standards than statewide standards.
“The division inspects and licenses Food Service Operations, Retail Food Establishments, Household Sewage Treatment Systems, Private Water Systems, Public Swimming Pools, Campgrounds, and Tattoo and Body Piercing Establishments.”
Environmental Health | Adams County Health Department ↗Re-checked Sep 9, 2026
Septic permitRequired
New or replacement sewage treatment systems and alterations to existing sewage treatment systems in the Adams County General Health District.
- A site review is required before the board of health accepts a permit application.
- The site review includes an application and fees, soil evaluation unless waived under the rule, an STS design, and an incremental replacement plan when applicable.
- Only a registered installer may conduct the installation or alteration.
- An approved installation or alteration permit is valid for one year and may be extended for six months.
permit validity: 1 year (The board of health may extend the permit period for an additional six months.) · site review validity: 5 years (Only if site conditions and STS design, including sewage source, do not change.)
“No person shall install a new or replacement STS or alter an existing STS without an installation or alteration permit issued by the board of health.”
Rule 3701-29-09 | Site review and permits for STS installation and operation ↗Re-checked Sep 9, 2026
Septic inspectionRequired
Installation and operation of sewage treatment systems in the Adams County General Health District.
- The board of health must inspect the installation in a timely manner; additional construction inspections may be required.
- The completed system must be inspected again no later than twelve months after installation approval.
- The board must assess whether the system operates properly and does not cause a public health nuisance or safety hazard.
- Adams County lists point-of-sale, operation-and-maintenance, home-replacement, and re-inspection services.
post-approval inspection deadline: <= 12 months · inspection certification deadline: <= 60 days (After the inspection)
“The board of health shall inspect the completed system again not later than twelve months after the approval of the installation to observe the system's operation.”
Rule 3701-29-09 | Site review and permits for STS installation and operation ↗Re-checked Sep 9, 2026
Well permitRequired
New private-water-system and well installations serving single-family or multi-family uses in the Adams County General Health District.
- The Adams County Health Department provides an application/permit for private water systems.
- The county fee schedule separately identifies permits to install new single-family and multi-family wells and test wells.
- The fee schedule includes up to three bacterial tests and one nitrate test for new well installation permits.
new single-family well installation permit fee: 480 USD (Includes up to 3 bacterial tests and 1 nitrate test.) · new multi-family well installation permit fee: 480 USD (Includes up to 3 bacterial tests and 1 nitrate test.) · test well installation permit fee: 480 USD (Includes 1 bacterial test and 1 nitrate test.)
“No person shall construct, alter or seal a private water system, test well or part thereof, unless a valid permit for the system has been issued by the board of health pursuant to this rule.”
Private Water | Adams County Health Department ↗Re-checked Sep 9, 2026
Permit feesPublished (with conditions)
Published fees administered by the Adams County Health Department for sewage-treatment-system and related environmental-health services.
- The listed fees apply to the services identified by the Health Department; the page does not establish a countywide fee schedule for every permit type.
- Installing without a permit incurs a penalty fee calculated as 25% of the permit fee plus the permit fee.
septic re-inspection fee: 100 USD · loan evaluation (septic): 250 USD · subdivision review base fee: 200 USD (plus $100 per lot) · subdivision review per-lot fee: per 100 USD (per lot) · installation-without-permit penalty: 25% of permit fee + permit fee
“Penalty Fee (Installing without Permit) | 25% Permit Fee + Permit Fee Septic Re-inspection Fee | $100.00 Loan Evaluation (Septic) | $250.00 Subdivision Review | $200+$100 Per Lot”
Service Fees ↗Re-checked Sep 26, 2026
One more reviewed finding on this topic
- Published (with conditions) — Published environmental-health permit and inspection fees administered by the Adams County Health Department, including household sewage treatment and private-water programs.
  “Septic Re-inspection Fee | $100.00 Subdivision Review | $200+$100 Per Lot Operation & Maintenance Permit (All Systems) | $60.00 Permit for Abandonment of Existing Onsite System | $300.00”
  Environmental Health Division Fees ↗Re-checked Sep 9, 2026
Permit processPublished (with conditions)
Adams County Health Department process for new septic installations, repairs, or alterations.
- Forms may be submitted by fax, mail, or dropped off at the office.
- The page also lists point-of-sale inspections, operation and maintenance or home-replacement inspections, and homeowner education as separate program items.
“Click on the forms below. Forms may be submitted via fax, mail, or dropped off to the office. Septic Program: Files HSTS Site Evaluation New septic installations, repairs, or alterations.”
Septic Program ↗Re-checked Sep 26, 2026
One more reviewed finding on this topic
- Partial — Adams County Health Department septic-program submissions for new household sewage treatment system installations, repairs, or alterations, plus point-of-sale and operation-and-maintenance inspections.
  “Click on the forms below. Forms may be submitted via fax, mail, or dropped off to the office. HSTS Site Evaluation New septic installations, repairs, or alterations.”
  Septic Program ↗Re-checked Sep 9, 2026
County-wide zoningAbsent
Adams County has no countywide zoning office in its official department listing; land-use zoning in unincorporated areas is handled at the township level rather than by a county zoning ordinance.
Adams County Government - County Offices ↗Scouted from the county site, not yet independently re-checked

Ohio rules that apply here

Building permitLimited
Residential construction in Ohio where a certified municipal, township, or county residential building department has jurisdiction.
- If no certified municipal, township, or county building department certified for residential buildings has jurisdiction, the owner is not required to make the statutory plan submissions.
- Before beginning construction, the owner must submit plans, drawings, specifications, and data to the building department having jurisdiction when the statutory submission requirement applies.
- No owner may proceed until the required plans or drawings, specifications, and data have been approved.
- The section states an effective date of September 10, 2012.
“If no certified municipal, township, or county building department certified for residential buildings pursuant to division (E) of section 3781.10 of the Revised Code has jurisdiction, the owner is not required to make the submissions described in division (A)(1) of this section.”
Section 3791.04 | Submission of plan - approvals - prohibition - fine ↗Re-checked Sep 26, 2026
2 more reviewed findings on this topic
- Required — Residential construction, alteration, repair, movement, occupancy change, or regulated residential building-service work in Adams County where the Ohio Residential Code applies and a certified residential building department has jurisdiction.
  “shall first make application [...] and obtain the required approval.”
  Residential Code of Ohio, Rule 4101:8-1-01 ↗Re-checked Sep 9, 2026
- Required — Construction, erection, manufacture, equipment, alteration, or addition of buildings subject to Ohio Revised Code section 3781.06, including industrialized units, statewide.
  “No owner shall proceed with the construction, erection, alteration, or equipment of any building until the plans or drawings, specifications, and data have been approved as this section requires, or the industrialized unit inspected at the point of origin.”
  Section 3791.04 | Submission of plan - approvals - prohibition - fine ↗Re-checked Sep 12, 2026
Owner-builder exemptionAvailable
A person other than an architect preparing plans, drawings, specifications, or data, filing applications for building permits, or obtaining those permits for residential buildings in Adams County, Ohio.
- The residential building must qualify as a residential building under Ohio Revised Code section 3781.06.
- The exemption also covers buildings erected as industrialized one-, two-, or three-family units or structures within the meaning of the term "industrialized unit" under section 3781.06.
- This is an exemption from the architect-registration restriction; applicable building-plan submissions, approvals, inspections, and other construction requirements still apply.
- Before construction begins, required plans or specifications must be submitted to the building department having jurisdiction, subject to the exceptions in Ohio Revised Code section 3791.04.
- No owner may proceed until required plans or drawings, specifications, and data have been approved, or the industrialized unit has been inspected at the point of origin.
“Sections 4703.01 to 4703.19 of the Revised Code do not prevent persons other than architects from preparing plans, drawings, specifications, or data, filing applications for building permits, or obtaining those permits for residential buildings, as defined by section 3781.06 of the Revised Code, or buildings erected as industrialized one-, two-, or three-family units or structures within the meaning of the term "industrialized unit" as provided in section 3781.06 of the Revised Code.”
Section 4703.18 | Prohibiting practice without certificate ↗Re-checked Sep 26, 2026
Building code adoptedAdopted (with conditions)
Ohio state residential building-code requirements applicable in areas served by a building department certified to enforce the state residential building code, including Adams County if a certified department has jurisdiction.
- The residential rules are uniform only in an area with a building department certified to enforce the state residential building code.
- A local code or regulation may not differ from the state residential building code for residential construction or repair unless it addresses subject matter not addressed by the state code or is adopted under Ohio Revised Code section 3781.01.
- A department may enforce only the type of building code for which it is certified.
- The statute is effective September 30, 2025.
“The board shall incorporate those rules into separate residential and nonresidential building codes. The standards shall relate to the conservation of energy and the safety and sanitation of those buildings.”
Section 3781.10 — Board of building standards — powers and duties ↗Re-checked Sep 26, 2026
One more reviewed finding on this topic
- Adopted (with conditions) — Buildings and classes of buildings regulated under Ohio Revised Code Chapter 3781, including residential and nonresidential buildings and industrialized units.
  “The board of building standards shall formulate and adopt rules governing the erection, construction, repair, alteration, and maintenance of all buildings or classes of buildings specified in section 3781.06 of the Revised Code, including land area incidental to those buildings, the construction of industrialized units, the installation of equipment, and the standards or requirements for materials used in connection with those buildings. The board shall incorporate those rules into separate residential and nonresidential building codes.”
  Section 3781.10 | Board of building standards - powers and duties ↗Re-checked Sep 12, 2026
InspectionsRequired
Nonresidential work requiring approval under the Ohio Building Code in Ohio, including Adams County, within the jurisdiction of an enforcing building department.
- The owner or owner’s representative must notify the building department when work is ready.
- Work must remain accessible and exposed until inspected; if inspectors do not inspect within four days excluding Saturdays, Sundays, and legal holidays, work may proceed to the next required inspection point.
- The building official provides a project-specific required-inspection list at plan approval.
inspection response period: <= 4 days excluding Saturdays, Sundays, and legal holidays (If the inspector does not inspect within this period after work is ready, work may proceed only to the next required inspection.)
“Construction or work for which an approval is required is be subject to inspection. It is the duty of the owner or the owner’s representative to notify the building department when work is ready for inspection.”
Ohio Building Code, Section 108 ↗Re-checked Sep 26, 2026
4 more reviewed findings on this topic
- Required — Residential construction or other residential-code work in Adams County for which Ohio Residential Code approval is required.
  “Construction or work for which an approval is required shall be subject to inspection.”
  Residential Code of Ohio, Section 108 Inspection Process ↗Re-checked Sep 9, 2026
- Limited — Inspections conducted by certified municipal, township, or county building departments in Ohio.
  “The board shall certify municipal, township, and county building departments, the personnel of those building departments, persons described in division (E)(7) of this section, and employees of individuals, firms, the state, or corporations described in division (E)(7) of this section to exercise enforcement authority, to accept and approve plans and specifications, and to make inspections, pursuant to sections 3781.03, 3791.04, and 4104.43 of the Revised Code.”
  Section 3781.10 | Board of building standards - powers and duties ↗Re-checked Sep 26, 2026
- Required — Residential work requiring approval under the Ohio Residential Code in Ohio, including Adams County, within the jurisdiction of an enforcing residential building department.
  “Construction or work for which an approval is required shall be subject to inspection. It shall be the duty of the owner or the owner’s duly authorized representative to notify the residential building department when work is ready for inspection.”
  Ohio Residential Code, Section 108 ↗Re-checked Sep 26, 2026
- Required — Building work subject to Ohio building-code enforcement after certificate of plan approval, and inspections initiated after complaints, accidents, or natural disasters.
  “Once a certificate of plan approval has been issued in accordance with rule 4101:1-1-01 or 4101:8-1-01 of the Administrative Code, or upon receipt of a complaint or occurrence of an accident or natural disaster, the building official directs necessary inspections and investigations to determine whether the work which has been performed and the installations which have been made are in conformity with the approved construction documents.”
  Rule 4101:7-3-02 | Building department personnel duties and responsibilities ↗Re-checked Sep 12, 2026
Certificate of occupancyRequired
Buildings and structures in Adams County governed by the Ohio Building Code, including new buildings, additions, and changes of occupancy.
- A building or structure may not be used or occupied until the building official issues a certificate of occupancy or certificate of completion.
- For new buildings and additions, unaffected existing spaces may continue to be occupied only if the building official determines they can be occupied safely.
- For a change of occupancy, the new occupancy may not begin until the certificate of occupancy reflects the changed portions.
- Partial occupancy may be approved before all work is complete if the building official determines the space can be safely occupied and the certificate states the approved area and any completion time limits.
- This claim is limited to buildings subject to the Ohio Building Code; it does not establish that every one-, two-, or three-family residential structure in Adams County requires an Ohio Building Code certificate of occupancy.
“A building or structure erected, enlarged or extended is not permitted to be used or occupied [...] until the certificate of occupancy has been issued”
Ohio Building Code, Rule 4101:1-1-01, Section 111 ↗Re-checked Sep 9, 2026
2 more reviewed findings on this topic
- Limited — Residential buildings governed by the Ohio Residential Code where a certified residential building department has jurisdiction.
  “If no municipal, township, or county building department is certified by the Board of Building Standards for residential buildings in accordance with section 3781.10(E) of the Revised Code has jurisdiction, the owner is not required to make submission of construction documents, seek approvals, request inspections, or obtain certificates of occupancy required in this Chapter.”
  4101:8-1-01 Administration ↗Re-checked Sep 26, 2026
- Required — Nonresidential buildings and structures in Ohio, including Adams County, where the Ohio Building Code applies.
  “No building or structure, in whole or in part, may be used or occupied until the building official has issued an approval in the form of a certificate of occupancy or certificate of completion in compliance with this section.”
  Ohio Building Code, Section 111 ↗Re-checked Sep 26, 2026
Camping on your landLimited
Temporary park-camps and temporary camping involving five or more recreational vehicles, dependent recreational vehicles, portable camping units, or combinations of those units in Adams County, Ohio.
- A temporary park-camp is limited to a total of twenty-one days per calendar year, in one or more periods not exceeding seven consecutive days or parts thereof.
- The operator must obtain a temporary park-camp license before beginning operation during the calendar year, unless a section 3729.05 exemption applies.
- Each temporary park-camp requires a separate license, and each temporary park-camp license is valid for no longer than seven consecutive days.
- More than twenty-one days or parts thereof on a tract in a calendar year requires a license as a recreational vehicle park, recreation camp, or combined park-camp.
- The no-value exception applies when the person neither intends to receive nor receives anything of value arising from use of the park, camp, or park-camp, or from sale of connected goods or services.
- A county or state fair, or independent agricultural society operating a fair, is exempt when recreational vehicles or portable camping units are parked only during preparation, operation, and dismantling of the fair and belong to fair participants.
- A licensed fair operator covered by section 3729.05(E) need not comply with requirements normally imposed on a licensee during preparation, operation, and dismantling of the fair.
- A motorsports park is exempt for participant-only areas during preparation and operation of the event if it holds at least one qualifying annual event sanctioned by NASCAR or NHRA and provides parking for participating recreational vehicles, dependent recreational vehicles, and portable camping units.
- A site hosting reenactors is exempt for designated participant areas for a total of seven days, including preparation, operation, and dismantling, if it provides parking for portable camping units belonging to reenactors and their families.
- An equestrian event facility is exempt for participant-only areas during preparation and operation if it holds at least one qualifying annual event sanctioned by the International Professional Rodeo Association or American Professional Rodeo Association and provides parking for participating recreational vehicles, dependent recreational vehicles, and portable camping units.
- A person subject to Chapter 3729 may apply to the director of health for a waiver or variance; it may be granted only if it will not adversely affect public health and safety.
- Separate local land-use and building requirements remain applicable to facilities subject to state plan approval.
annual temporary-camp duration: <= 21 days per calendar year (Periods may not exceed seven consecutive days or parts thereof) · temporary-camp period: <= 7 consecutive days (The seven-day license term applies to each separate temporary park-camp license) · temporary park-camp threshold: >= 5 recreational vehicles, dependent recreational vehicles, portable camping units, or combination (As defined in section 3729.01(V)) · late license-fee penalty: 25 percent of applicable fee (For an annual license fee not received by the close of business on the last day of April, or next business day when April 30 is not a business day)
“(V) "Temporary park-camp" means any tract of land used for a period not to exceed a total of twenty-one days per calendar year for the purpose of parking five or more recreational vehicles, dependent recreational vehicles, or portable camping units, or any combination thereof, for one or more periods of time that do not exceed seven consecutive days or parts thereof.”
Section 3729.01 | Definitions ↗Re-checked Sep 26, 2026
Manufactured homesLimited
Occupancy of manufactured homes installed in Ohio and regulated under Chapter 4781 of the Revised Code and implementing rules.
- A manufactured home generally may not be occupied until the inspector issues the inspection seal.
- The inspection seal must be paid for when the permit is issued.
- A temporary occupancy permit may provide the applicable exception under Rule 4781-7-01(C).
- The home must meet Ohio manufactured-home installation standards; local ordinances and other regulations may also apply to site placement.
“Except as provided in paragraph (C) of this rule, no manufactured home shall be occupied until the inspector has issued the inspection seal.”
Chapter 4781-7 | Manufactured home inspections ↗Re-checked Sep 12, 2026
One more reviewed finding on this topic
- Limited — A permanently sited manufactured home located in a county zoning district or zone in Ohio, including Adams County, where a single-family home is permitted.
  “do not confer on any county rural zoning commission, board of county commissioners, or board of zoning appeals the authority to prohibit or restrict the location”
  Section 303.212 | Limitations on powers - permanently sited manufactured homes ↗Re-checked Sep 9, 2026
Off-grid sanitationAllowed (with conditions)
Sewage treatment systems serving properties that are not connected to a sanitary sewerage system, including Adams County.
- The appropriate board of health must approve or disapprove installation, operation, and alteration.
- Installation, operation, and alteration remain subject to Ohio Chapter 3718 and Ohio Administrative Code Chapter 3701-29.
- The system must satisfy site, design, permit, inspection, operation, and maintenance requirements.
“Require that the appropriate board of health approve or disapprove the installation, operation, and alteration of a sewage treatment system if it is not connected to a sanitary sewerage system;”
Chapter 3718 - Ohio Revised Code ↗Re-checked Sep 9, 2026
Mandatory utility hookupSewer (with conditions)
Disposal of sewage where an existing publicly owned or regional sanitary sewer is accessible and available.
- The sewer connection may not conflict with an areawide waste-treatment plan, approved regional sewage-service and treatment plan, or connection ban.
- The receiving disposal system must have or be expected to have capacity to collect and treat the sewage.
- For an existing structure, any part of the structure generating waste must be within 300 feet of the nearest sanitary-sewer right-of-way boundary.
- For a proposed structure outside a larger common plan, any lot property line must be within 300 feet.
- For two or more proposed structures, the threshold is 200 feet multiplied by the number of proposed structures, up to 5,000 feet.
- The director may grant an exemption when technical, financial, environmental, legal, or physical barriers prevent connection and the alternative will not adversely affect human health or the environment.
- When a sewer later becomes accessible and available, a non-public or non-regional disposal system must generally be abandoned and connection made within three years unless the director authorizes another timeframe.
existing structure sewer-distance threshold: <= 300 feet (Measured to the nearest boundary of the sanitary-sewer right-of-way.) · proposed structure sewer-distance threshold: <= 300 feet (Measured from any property line of the lot.) · multiple proposed structures threshold: 200 feet multiplied by the number of proposed structures (Maximum distance is 5,000 feet.) · connection deadline after accessibility becomes available: 3 years (Unless an alternative timeframe is authorized by the director.)
“Connection into existing publicly owned or regional sanitary sewers is required for the disposal of sewage when said sewers are accessible and available.”
Rule 3745-42-07 | Best available technology for connection into sanitary sewers and centralized collection and treatment ↗Re-checked Sep 12, 2026
Agricultural exemptionConditional
Buildings or structures used in agriculture in Ohio, including Adams County, where the statutory zoning-certificate or agricultural-use conditions apply.
- A county zoning inspector under section 303.16 or township zoning inspector under section 519.16 must issue a zoning certificate declaring that the specific building or structure is to be used in agriculture for the section 3781.061 exemption.
- Under section 303.21(A), county zoning provisions generally do not confer power to prohibit agricultural land use or agricultural buildings and no zoning certificate is required for such agricultural buildings, subject to the statutory exceptions in division (B).
- In a platted subdivision or qualifying area of fifteen or more contiguous lots, a county zoning resolution may regulate agriculture on lots of one acre or less; agricultural buildings on lots greater than one acre and not greater than five acres by setback building lines, height, and size; and certain dairying or animal and poultry husbandry after the stated development threshold.
- The statutory exception confers no county power to regulate agriculture, agricultural buildings, or dairying and animal or poultry husbandry on lots greater than five acres.
agricultural-lot threshold for permitted regulation: <= 1 acre (agriculture in qualifying platted subdivisions or qualifying fifteen-lot areas) · agricultural-building lot range for permitted regulation: greater than 1 and not greater than 5 acres (setback building lines, height, and size in qualifying areas) · development threshold: >= 35 percent (for specified dairying and animal or poultry husbandry regulation)
“Whenever a county zoning inspector under section 303.16 of the Revised Code, or a township zoning inspector under section 519.16 of the Revised Code, issues a zoning certificate that declares a specific building or structure is to be used in agriculture, such building is not subject to sections 3781.06 to 3781.20, 3781.40, or 3791.04 of the Revised Code.”
Section 3781.061 | Exemption for building or structure used in agriculture ↗Re-checked Sep 26, 2026
2 more reviewed findings on this topic
- Available (with conditions) — A specific agricultural building or structure in Adams County when a county or township zoning inspector issues a zoning certificate declaring that the building or structure is to be used in agriculture.
  “Whenever a county zoning inspector under section 303.16 of the Revised Code, or a township zoning inspector under section 519.16 of the Revised Code, issues a zoning certificate that declares a specific building or structure is to be used in agriculture, such building is not subject to sections 3781.06 to 3781.20, 3781.40, or 3791.04 of the Revised Code.”
  Section 3781.061 | Exemption for building or structure used in agriculture ↗Re-checked Sep 9, 2026
- Conditional — Buildings or structures incident to agricultural use of the land, and a specific building or structure declared by a county or township zoning inspector to be used in agriculture.
  “issues a zoning certificate that declares a specific building or structure is to be used in agriculture, such building is not subject to sections”
  Section 3781.06 | Public buildings to be safe and sanitary - definitions ↗Re-checked Sep 12, 2026
Subdividing landRegulated (with conditions)
Subdivision and platting of land in Ohio, including divisions of parcels and plats outside municipal corporations.
- A subdivision includes division of a parcel into two or more parcels, sites, or lots when any one is less than five acres for immediate or future transfer of ownership.
- A division or partition into parcels of more than five acres is exempt when it does not involve new streets or easements of access.
- A sale or exchange between adjoining lot owners is exempt when it does not create additional building sites.
- A planning authority may adopt a rule under section 711.133 exempting parcels of four acres or more within the size range delineated in that rule.
- Improvement of land involving division or allocation for opening, widening, or extension of public or private streets, or for common open spaces or utility easements, is also included in the statutory subdivision definition.
- No plat certifying lands outside a municipal corporation may be recorded without approval by the board of county commissioners, except where approval is required from a planning commission under sections 711.09 or 711.10.
- The cited section 711.001 states an effective date of July 1, 2010; the cited section 711.041 states an effective date of October 6, 1955.
subdivision parcel threshold: < 5 acres (The statutory definition applies when any resulting parcel, site, or lot is less than five acres.) · exempt parcel size: > 5 acres (Division or partition into parcels of more than five acres is exempt if no new streets or easements of access are involved.) · possible planning-authority exemption threshold: >= 4 acres (Only if the planning authority adopts a rule under section 711.133 and only within the size range delineated in that rule.)
“No plat certifying lands outside a municipal corporation may be recorded without the approval thereon of the board of county commissioners”
Section 711.001 | Plat definitions ↗Re-checked Sep 12, 2026
2 more reviewed findings on this topic
- Regulated (with conditions) — Subdivision plats in Ohio, including unincorporated areas of Adams County, when the statutory conditions for county or regional planning commission approval apply.
  “When all of these conditions are met, no plat of a subdivision of land in that unincorporated territory shall be recorded until it has been approved by the county or regional planning commission as provided in section 711.10 of the Revised Code.”
  Section 711.09 | Platting of subdivisions ↗Re-checked Sep 26, 2026
- Regulated (with conditions) — Subdivisions and qualifying divisions of land in Adams County under Ohio Revised Code Chapter 711.
  “(B) "Subdivision" means either of the following: (1) The division of any parcel of land shown as a unit or as contiguous units on the last preceding general tax list and duplicate of real and public utility property, into two or more parcels, sites, or lots, any one of which is less than five acres for the purpose, whether immediate or future, of transfer of ownership, provided, however, that the following are exempt:”
  Section 711.001 | Plat definitions ↗Re-checked Sep 26, 2026
Campground & park staysLimited
Human habitation in a recreational vehicle or portable camping facility placed in a lot or camping space at a licensed recreational vehicle park, recreation camp, combined park-camp, or temporary park-camp in Adams County, Ohio.
- Occupancy rights arise only after a license is issued under Ohio Revised Code sections 3729.05 to 3729.08.
- The right to rent or use each lot or camping space for human habitation lasts only for a period coextensive with the license or consecutive licenses.
- A recreational vehicle park, recreation camp, combined park-camp, or temporary park-camp generally may not be maintained or operated without a license.
- A person who neither intends to receive nor receives anything of value from use of the park, camp, or park-camp, or from sale of goods or services connected with its use, is exempt from the license requirement under section 3729.05(A)(3).
- Separate local land-use and building requirements remain applicable because state plan approval does not exempt the facility from the requirements of the political subdivision where it is located.
occupancy authorization: coextensive with license or consecutive licenses (Only after issuance of a license under sections 3729.05 to 3729.08)
“Upon a license being issued under sections 3729.05 to 3729.08 of the Revised Code, any operator has the right to rent or use each lot or camping space for the parking or placement of a recreational vehicle or portable camping facility to be used for human habitation without interruption for any period coextensive with any license or consecutive licenses issued under sections 3729.05 to 3729.08 of the Revised Code.”
Section 3729.09 | Rights coextensive with term of license ↗Re-checked Sep 26, 2026
3 more reviewed findings on this topic
- Limited — Occupancy and placement of recreational vehicles in Ohio-licensed campgrounds and temporary campgrounds.
  “Recreational vehicles or portable camping units shall be parked only on sites that have been verified as complying with plans approved by the director, or in the case of a temporary campground, by the licensor;”
  Rule 3701-26-04 | Campground requirements ↗Re-checked Sep 12, 2026
- Prohibited — Camping in Ohio state forests outside areas, sites, or campgrounds designated by the chief of the division of forestry or an authorized agent.
  “No person shall camp in a state forest except in areas, sites or campgrounds designated by the chief of the division of forestry or authorized agent.”
  Rule 1501:3-3-01 | Camping permitted in designated areas ↗Re-checked Sep 12, 2026
- Limited — Roadside camping at designated Ohio state forests along public roads maintained by the division of forestry.
  “Roadside camping is permitted at designated state forests, along public roads maintained by the division of forestry, during certain legally established hunting seasons as authorized by the chief of the division of forestry.”
  Rule 1501:3-3-06 | Camp occupancy ↗Re-checked Sep 12, 2026
county zoning authorityGeneral
County commissioners may adopt zoning resolutions regulating building, structures, land uses, and districts or zones in unincorporated territory statewide.
- The authority is exercised by resolution and must be in accordance with a comprehensive plan.
- The authority applies to unincorporated territory of the county.
- The statute begins with the exception phrase “Except as otherwise provided in this section,” so the limitations in ORC Chapter 303 apply.
- For nonresidential property only, the county may regulate height, bulk, number of stories, size, lot coverage, yards, courts, open spaces, and population density.
- Agricultural uses and agricultural buildings are subject to the limitations in ORC 303.21; the statute also contains limitations for public utilities, railroads, telecommunications towers, alcoholic-beverage sales, oil and gas drilling, and permanently sited manufactured homes.
- Activities regulated under ORC Chapters 1513 and 1514 may be regulated only in the interest of public health or safety, and Chapter 1514 activities must be provided for as permitted or conditional uses as specified by ORC 303.02.
“the board of county commissioners may regulate by resolution, in accordance with a comprehensive plan”
Section 303.02 | County commissioners may regulate building and land use in unincorporated territory ↗Re-checked Sep 21, 2026
county building authorityGeneral
County commissioners may adopt and enforce local residential building regulations in unincorporated areas and may operate certified county building departments that enforce state residential and nonresidential building codes, accept and approve plans, and conduct inspections.
- Local residential building regulations may be enforced within the unincorporated area or within districts established in the unincorporated area.
- A local residential building regulation may not differ from the state residential building code unless it addresses subject matter not addressed by that code or is adopted under ORC 3781.01.
- An existing structures code must concern subject matter not addressed by, and may not conflict with, the state residential building code.
- County building departments may enforce state codes only for the types of buildings and subject matters for which they are certified.
- Certification permits enforcement authority, plan approval, and inspections; the certification application identifies whether it covers residential or nonresidential buildings and whether residential certification covers new construction only or also repair and alteration.
- The board may adopt flood-hazard, Lake Erie coastal-erosion, and drainage regulations, subject to the statutory limits and exceptions in ORC 307.37.
- Local regulations, codes, or amendments require public hearings at not fewer than two regular or special board sessions; they take effect on the thirty-first day after adoption.
- Regulations adopted under ORC 307.37 generally do not affect buildings or structures existing, or under construction, before adoption, except as provided for an existing structures code.
- The state residential building code is effective as a uniform requirement in areas with a building department certified to enforce it.
“The board of county commissioners may adopt local residential building regulations governing residential buildings as defined in section 3781.06 of the Revised Code”
Section 307.37 | Adoption of county building code ↗Re-checked Sep 21, 2026

Inside cities and towns in Adams County

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

Local zoningPresent (with conditions)
Land and buildings within the Village of West Union, Adams County, Ohio.
- The ordinance applies within the Village of West Union; its zoning map and district boundaries govern applicability.
- The ordinance states that it becomes effective after approval and adoption as provided by law.
“In order to classify, regulate and restrict the location of traders, industries, residences, recreation and other land uses, and the location of buildings designed for specific uses; to regulate the size of buildings and other structures erected or altered; and the size of yards and other open spaces, setback and building lines, the Village of West Union, Adams County, Ohio is hereby divided into classes of districts:”
Village of West Union Zoning Ordinance ↗Re-checked Sep 29, 2026
Zoning districtsPublished (with conditions)
The Village of West Union, Adams County, Ohio, within its municipal jurisdiction.
- The ordinance applies to the Village of West Union; it does not establish countywide zoning districts.
- District boundaries are established by the accompanying Zoning Map, which is declared part of the ordinance.
- The ordinance states that the map is properly attested and on file with the Village Administrator.
- Questions about exact district boundaries are determined by the Board of Zoning Appeals under the ordinance.
- If annexed or otherwise incorporated property is not specifically included in a zoning district, it is officially included in the R-1 zoning district until otherwise classified; the Village must initiate a zone change within 60 calendar days after the annexation or recognized error or omission.
A-1 district: Agricultural/Institutional District · R-1 district: Residence District · R-2 district: Multi-Family & Mixed-Use District · CBD district: Central Business District · HBD district: Highway Business District · I district: Industrial District
“the Village of West Union, Adams County, Ohio is hereby divided into classes of districts: "A-1" "R-1" "R-2" "CBD" “HBD” "I" Agricultural/Institutional District Residence District Multi-Family & Mixed-Use District Central Business District Highway Business District Industrial District”
Zoning Ordinance of the Village of West Union, Adams County, Ohio ↗Re-checked Sep 26, 2026

Still unanswered

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

Minimum dwelling size — Minimum dwelling size requirements for residential dwellings in unincorporated Adams County.
Minimum lot size — Minimum lot size requirements in unincorporated Adams County.
Setbacks — Building setbacks in unincorporated Adams County.
Lot coverage — Lot coverage requirements in unincorporated Adams County.
Building height — Building height requirements in unincorporated Adams County.

6 more unanswered

Living in an RV
Tiny homes
Accessory dwellings
Driveway access
Building in a floodplain
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 Adams County, Ohio

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

Adams County scores 74/100 on the Bolthole Index, a strong county profile. Its strengths: low administrative friction for a quiet rural property and manageable long-term carry cost. Watch-outs: a weaker property-autonomy legal backdrop.

Do you need a building permit in Adams County, Ohio?

Adams County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Adams County Health Department (West Union, OH). Owner-builders may act as their own contractor to build their home. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Adams County, Ohio?

Land in Adams County runs about $5,254 per acre, based on the latest county data.

What is the water situation in Adams County?

Adams County gets about 45.8" of rain a year, with severe drought in roughly 0.3% of years.

How remote is Adams County?

A representative private-land location has about 18,846 people within a 30-minute drive and 3,952,868 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.

Building permits, zoning and land rules in Adams County, Ohio

At a glance

Who to call

Do you need a building permit in Adams County, Ohio?

Who is the Adams County building department?

Does Adams County have zoning?

How do septic permits work in Adams County?

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

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

What should you check before buying land in Adams County?

Watch-outs

Sources

Adams County in Ohio

How Adams County scores

Find land. Bring the promising ones back.

Parcel due diligence

Answers from the rulebook for Adams County

Adams County rules

Ohio rules that apply here

Inside cities and towns in Adams County

Still unanswered

Living off-grid in Adams County, Ohio

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

Do you need a building permit in Adams County, Ohio?

How much does land cost in Adams County, Ohio?

What is the water situation in Adams County?

How remote is Adams County?

How Adams compares in Ohio