Bolthole Index

Chelan County, Washington

Building permits, zoning and septic rules in Chelan County, Washington

52Index Score / 100
#22 of 39 in Washington

Unincorporated Chelan County, Washington enforces the state building code and runs permit intake, plan review, issuance and construction inspections through Community Development12. County zoning also applies, while the Chelan-Douglas Health District issues septic permits34. Manufactured-home placement, permanent park model RVs and tiny homes each have specific approval rules567.

At a glance

Building permits
Community Development handles intake, plan review, issuance and construction inspections under adopted building codes12
Zoning
County zoning controls apply in unincorporated Chelan County3
Septic permit
Required for new systems and most work; issued by the Chelan-Douglas Health District48
Owner-builder
Contractor registration exemption available for work on your own property, except work intended for sale, demolition or lease9
Tiny homes
Allowed as permanent dwellings under the state residential code; off-site wheeled units need state approval7
Park model RVs
Permanent dwelling use requires a county placement permit, qualifying certification, a permanent foundation and approved utilities6
Private wells
Some domestic, stock-water and small garden withdrawals are exempt from the state groundwater permit10

Who to call

Building permits

Chelan County Community Development - Building Division

Building permits, plan review, code enforcement and inspections for unincorporated Chelan County

(509) 667-6225

316 Washington Street, Suite 301, Wenatchee, WA 98801

Floodplain permits

Chelan County Community Development - Building Division (programs & inspection line)

FEMA flood protection and Floodplain Development Permits, plus scheduling inspections on active building permits

509-667-6635

Zoning

Chelan County Community Development - Current Planning Division

Land development, comprehensive planning, subdivision, zoning and shoreline permits for Chelan County

Roads & driveways

Chelan County Public Works - Development Review

Stormwater, driveway and access permits, and work in the county right-of-way

509-667-6415

[email protected]

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 Chelan County, WA?

Chelan County Community Development handles building-permit intake, plan review, permit issuance and inspections during construction in unincorporated Chelan County2. The county enforces adopted international codes, Washington amendments and county requirements1. Ask the Building Division whether a particular scope needs a permit before work begins; the available county facts do not establish a universal exemption for small projects. Manufactured and mobile homes have a specific county placement process: the county inspects the foundation and setup, and a home built before June 15, 1976 needs a Washington Department of Labor and Industries alteration permit before it is submitted to the county5. An owner working on their own property can qualify for a contractor-registration exemption, but not when acting as a contractor to sell, demolish or lease the property9. That exemption is about contractor registration, not permission to bypass county permits or inspections.

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

Chelan County Community Development's Building Division handles the county building-permit process2. Reach the office at (509) 667-6225, at 316 Washington Street, Suite 301 in Wenatchee11. Building permits are accepted from 8 a.m. to 4 p.m.11. Published fees vary by application, and residential structures are priced from the applicable fee schedule or valuation chart12. During construction, inspections must be requested 24 hours ahead and by 4 p.m.; provide the permit number, address, inspection type, requested date, name and callback number13. Schedule through the inspection line at 509-667-663514. Current Planning handles land development, subdivisions, zoning and shoreline permits, including county-adopted city codes in named urban growth areas15.

Does Chelan County have zoning?

Yes. Chelan County administers zoning controls in unincorporated areas, and even permit-exempt accessory structures must meet zoning setbacks3. Current Planning applies Chelan County codes, the Shoreline Master Program and county-adopted city codes in the urban growth areas of Wenatchee, Cashmere, Chelan, Entiat and Leavenworth15. The available county facts do not give a single countywide numeric answer for setbacks, minimum lot size, lot coverage, building height or minimum dwelling size, so ask Current Planning to identify the parcel's district and standards before designing or buying. Dividing land also requires local review: Chelan County regulates major and short subdivisions, with fees varying by application type16. A development that will use municipal sewer or water needs written confirmation that the utility will serve each lot, and the improvements must satisfy the utility before final plat approval17.

How do septic permits work in Chelan County?

The Chelan-Douglas Health District handles on-site sewage review and permits in Chelan County and requires licensed people for septic-system work4. A septic permit is required for new construction, installation, repair, modification, connection, expansion or remediation of an on-site system8. Request the final inspection at least two business days ahead and complete the as-built form before the inspection, submitting it with the request or at the inspection18. Site feasibility matters: only about 1.2% of county soils are rated free of severe limits for a conventional drain field, and about 5.5% of county land has a slope of 15% or less1920. Treat septic suitability as an early contingency, not something to solve after house plans are finished.

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

Chelan County allows tiny houses built on-site as permanent dwellings under the Washington State Residential Code; a tiny house on wheels built off-site must be approved by Washington Labor and Industries as a factory-assembled structure7. A true park model RV may serve as a permanent dwelling only with a county placement permit, ANSI A119.5 certification, a Washington Labor and Industries insignia, a permanent foundation and approved utilities6. That park-model rule does not answer whether an ordinary travel trailer may be occupied temporarily or full-time on private land. Chelan County's temporary-camping rule could not be confirmed, so ask Current Planning about the parcel and proposed duration15. County zoning still controls siting and setbacks in unincorporated areas3.

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

  1. Ask Current Planning to confirm the parcel's zoning, setbacks, allowed dwelling type and any urban-growth-area rules153.
  2. Establish water and wastewater feasibility. The Health District permits septic work; qualifying groundwater uses may be exempt from a state water-right permit, but larger withdrawals require one810.
  3. Resolve access with Public Works before constructing an approach to a county road2122.
  4. Submit plans to the Building Division for intake and plan review, and use the published fee schedule or valuation chart to budget the permit212.
  5. Obtain a county Floodplain Development Permit if the proposal is in a floodplain23.
  6. Schedule required construction inspections 24 hours ahead and before the daily 4 p.m. cutoff13.

What to check before you buy land in Chelan County

Start with buildability. Only about 5.5% of Chelan County land has a slope of 15% or less, and only about 1.2% of soils are rated free of severe limits for conventional septic drain fields2019. Confirm legal access, zoning, septic area, water source and floodplain status before closing. A qualifying single or group domestic groundwater use of no more than 5,000 gallons per day may be exempt from the state appropriation permit, as may stock water and a lawn or noncommercial garden of no more than 0.5 acre; uses outside the exemptions require a permit10. Floodplain development requires a county permit23. A county-road approach needs county permission, while a connection on a state-highway right-of-way needs written permission from the Washington Department of Transportation2224.

Watch-outs

  • The owner-builder and agricultural exemptions concern contractor registration; neither fact establishes an exemption from building permits, zoning or inspections925.
  • Chelan County's permanent-dwelling rule covers qualifying park model RVs, but temporary camping and ordinary travel-trailer occupancy could not be confirmed; ask Current Planning before relying on an RV for housing615.
  • A municipal water or sewer promise for a subdivision must be documented in writing for each lot, and unfinished utility improvements can require financial security before final plat approval17.

Sources

  1. Building, quoted and re-checked
  2. Building, quoted and re-checked
  3. Building, quoted and re-checked
  4. Service Providers & Licensed Designers, quoted and re-checked
  5. Building Division Frequently Asked Questions, quoted and re-checked
  6. Building Division Frequently Asked Questions, quoted and re-checked
  7. Building Division Frequently Asked Questions, quoted and re-checked
  8. Service Providers & Licensed Designers, quoted and re-checked
  9. RCW 18.27.090 Exemptions, quoted and re-checked
  10. Land Use — Water Rights, quoted and re-checked
  11. Chelan County Community Development - Building Division (co.chelan.wa.us)
  12. Community Development Fee Schedule, quoted and re-checked
  13. Building, quoted and re-checked
  14. Chelan County Community Development - Building Division (programs & inspection line) (co.chelan.wa.us)
  15. Chelan County Community Development - Current Planning Division (co.chelan.wa.us)
  16. Community Development Fee Schedule, quoted and re-checked
  17. Land Use, quoted and re-checked
  18. Service Providers & Licensed Designers, quoted and re-checked
  19. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  20. Share of land at 15% slope or less: Bolthole Index county data
  21. Chelan County Public Works - Development Review (co.chelan.wa.us)
  22. RCW 36.75.130 — Approaches to county roads—Rules regarding construction—Penalty (Washington statewide rule), quoted and re-checked
  23. Building, quoted and re-checked
  24. RCW 47.32.150 — Approach roads, other appurtenances—Permit (Washington statewide rule), quoted and re-checked
  25. RCW 18.27.090 Exemptions, quoted and re-checked

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.

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County locator

Chelan County in Washington

52
County map
Chelan County highlighted among the Washington counties · colored by Index score

How Chelan County scores

Seclusion80100% ev.
Self-Sufficiency38100% ev.
Admin Boringness41100% ev.
Durability36100% ev.
Property Autonomy50100% ev.
Carry Cost33100% ev.

Evidence strength: 100%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$542kTypical home
0.7%Property tax
$18,894Land / acre
37.6"Annual rain
6.8% of yrsSevere drought
1.3 / yr (+1.1)Mid-century 100°F days
31.5 daysMid-century dry spell
2.18" (+10.4%)Mid-century 1-day rain
1.34×Wildfire change factor
100%Forward climate coverage
$1,507Home insurance / yr
3.1% / yrInsurance growth
1.21%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
6,044People within 30 min
259,574People within 2 hr
59,692Radius comparison (15 mi)
27.4People / sq mi
81%Federal land
5.5%Land at 15% slope or less
1.2%Septic soil without severe limits
22,707 acWorkable land screen
65.5%Wooded land
51.1 tonsBiomass / forest ac
43.4°FAvg temp

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Answers from the rulebook for Chelan County

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

Chelan County rules

  • Building permitLimited

    Placement of manufactured or mobile homes in unincorporated Chelan County.

    • Homes built before June 15, 1976 require an alteration permit from the Department of Labor and Industries before county submission.
    • The county inspects the foundation system and setup only.
    “Yes, a permit is required from the county for the placement of a manufactured home or a mobile home.”
  • Building code adoptedAdopted (with conditions)

    Construction-code enforcement by Chelan County.

    • The county enforces International Codes, Washington State Amendments, WAC, and listed county and federal requirements.
    “Chelan County enforces the International Codes, Washington State Amendments and Washington Administrative Code (WAC), all as adopted in CCC Chapter 3.04.”
  • InspectionsRequired

    County building inspections during construction.

    • Inspections must be scheduled 24 hours in advance.
    • Requests must be made daily by 4 p.m.
    • The request must include permit number, address, inspection type, date, name, and callback phone number.
    “All inspections with the Chelan County must be scheduled 24 hours in advance. All requests must be made daily by 4 p.m.”
  • County-wide zoningPresent (with conditions)

    Zoning controls administered by Chelan County in unincorporated areas.

    • The county page states that exempt accessory structures must still comply with required zoning setbacks.
    “The accessory structure would still have to comply with the required zoning setbacks.”
  • Living in an RVLimited

    Permanent dwelling use of true park model RVs in unincorporated Chelan County.

    • An approved county placement permit is required.
    • The unit must be ANSI A119.5 certified, have a Washington State Labor and Industries insignia, be on a permanent foundation, and have approved utilities.
    “Yes, these are allowed to be permitted with an approved placement permit from the county and if they meet the following criteria.True Park Model RV’s are certified to the ANSI A119.5 Standard and are regulated by Washington State Department of Labor and Industries as Factory-Assembled Structures. They can be used as permanent dwellings as long as the unit contains a WA State Insignia approved by state Labor and Industries and the unit is placed on a permanent foundation with approved utilities.”
  • Tiny homesAllowed (with conditions)

    Tiny houses used as permanent dwelling units in unincorporated Chelan County.

    • Tiny houses are regulated by Washington State Residential Code Appendix Q.
    • Off-site tiny houses on wheels must be approved by Washington State Labor and Industries as factory-assembled structures.
    “Yes, tiny houses are regulated by the Washington State Residential Code (Appendix Q) and are allowed to be built on-site as permanent dwellings. Tiny Houses on wheels that are constructed off-site must be approved by Washington State Labor and Industries as Factory-Assembled Structures.”
  • Who permits septicLocal

    On-site sewage review and permitting in Chelan County and Douglas County.

    • The district requires licensing for septic-system work in both counties.
    “Chelan-Douglas Health District requires licensing of individuals for septic system work in both Chelan & Douglas Counties.”
  • Septic permitRequired

    New construction, installation, repair, modification, connection, expansion, or remediation of onsite septic systems in Chelan County.

    • Unpermitted septic work is a public-health violation and may result in enforcement and civil penalties.
    “Any septic work related to the new construction, installation, repair, modification, connection, expansion, or remediation of an onsite septic system requires a Septic System Permit.”
  • Septic inspectionRequired

    Final inspection of onsite septic installations in Chelan County.

    • Final inspection requests must be submitted at least two business days in advance.
    • An as-built form must be completed before inspection and submitted with the request or at inspection.
    “Notify Health Department of Final inspection request at [email protected] at least two (2) business days in advance.”
  • Mandatory utility hookupConditional

    Developments served by municipal sewer or water systems in Chelan County.

    • Written utility confirmation agreeing to individual service to each lot is required.
    • Improvements must comply with the purveyor's requirements and be accepted in writing before final plat approval.
    • If final plat approval precedes completion, a bond or other financial security arrangement is required.
    “Developments that will be served by a municipal sewer and/or water system will need written confirmation from the utility agreeing to provide individual service to each lot.”
  • Subdividing landRegulated (with conditions)

    Major and short subdivision applications in unincorporated Chelan County.

    • Fees vary by application type and effective schedule.
    • Major subdivision preliminary plat fees include an additional per-lot fee.

    major subdivision preliminary fee: $3,709 USD (effective 08/01/2026; plus $85 per lot)

    “Plat (Major Subdivision): Preliminary | $2,533.00 | $3,709.00 | $4,783.00 | Plus $85/Lot”
  • Building in a floodplainRequired

    Floodplain development in unincorporated Chelan County.

    • The county administers FEMA flood-protection requirements and floodplain development permits.
    • The county identifies CCC Chapter 3.20 as the flood-hazard development chapter.
    “The Building Division is responsible for the administration and enforcement of the following programs and activities: International Building, Residential, Mechanical, Fire and the Uniform Plumbing Codes, Washington State Energy Code; Chelan County Code; FEMA flood protection requirements & Floodplain Development Permits;”
  • Permit feesPublished

    Chelan County Community Development planning and building permit fees.

    • The schedule lists fees effective August 1, 2025, August 1, 2026, and August 1, 2027.
    • Residential and commercial structures use the applicable fee schedule or valuation chart.
    • Short-term rental fees vary by tier.

    residential structures: Per Fee Schedule/Valuation Chart USD (effective 08/01/2026)

    “Residential Structures | Per Fee Schedule/Valuation Chart | Per Fee Schedule/Valuation Chart | Per Fee Schedule/Valuation Chart”
  • Permit processPublished

    Chelan County building permit process.

    • The county provides permit application intake, public assistance, plan review, permit issuance, and construction inspections.
    “Activities include permit application intakes, public assistance on permit process, plan reviews, permit issuance, and inspections during construction.”

Washington rules that apply here

  • Owner-builder exemptionConditional

    An owner or other person performing construction-related contractor activities on the person's own property or personal residence under Washington contractor-registration law.

    • The exemption concerns registration provisions under chapter 18.27 RCW and does not itself eliminate applicable building, electrical, plumbing, mechanical, land-use, or inspection requirements.
    • For work on the person's own property, the exemption does not apply when the person performs contractor activities for the purpose of selling, demolishing, or leasing the property.
    • For an owner contracting with a registered contractor, the exemption does not apply to a person performing contractor activities to lease or sell improved property owned for less than twelve months.

    small-project contract threshold: < 500 USD (The threshold exemption does not apply when the work is part of a larger operation, contracts are divided to evade the chapter, or the person advertises as a contractor.)

    “The registration provisions of this chapter do not apply to: [...] (12) Any person working on his or her own property, whether occupied by him or her or not, and any person working on his or her personal residence, whether owned by him or her or not but this exemption shall not apply to any person who performs the activities of a contractor on his or her own property for the purpose of selling, demolishing, or leasing the property;”
    One more reviewed finding on this topic
    • Available (with conditions) — Washington contractor-registration requirements for persons working on their own property or personal residence.
      “(12) Any person working on his or her own property, whether occupied by him or her or not, and any person working on his or her personal residence, whether owned by him or her or not but this exemption shall not apply to any person who performs the activities of a contractor on his or her own property for the purpose of selling, demolishing, or leasing the property;”
  • Minimum dwelling sizeSpecified

    Dwelling units regulated by Washington's state building code.

    • The rule specifies habitable-space and room-area minimums, not a zoning minimum lot or gross floor-area standard.
    • Kitchens are expressly excepted from the minimum floor-area requirement.
    • Efficiency dwelling units must comply with Sections 1208.1 through 1208.4 and must have a separate closet, required kitchen facilities, light and ventilation, and a separate bathroom as stated in the source.
    • The current rule text states WSR 23-23-102 was filed 11/15/23 and effective 3/16/24.

    minimum habitable space: >= 190 square feet · minimum area of at least one room: >= 120 square feet · minimum net floor area of sleeping units and other habitable rooms: >= 70 square feet (Kitchens are not required to be of a minimum floor area.)

    “1208.3 Dwelling unit size. Dwelling units shall have a minimum of 190 square feet (17.7 m 2) of habitable space. 1208.4 Room area. Every dwelling unit shall have not less than one room that shall have not less than 120 square feet (11.2 m 2) of net floor area. Sleeping units and other habitable rooms of a dwelling unit shall have a net floor area of not less than 70 square feet (6.5 m 2). EXCEPTION: Kitchens are not required to be of a minimum floor area.”
  • Building heightSpecified

    Buildings subject to Washington's state building code, with allowable height determined by occupancy classification and type of construction.

    • Table 504.3 is occupancy- and construction-type-specific.
    • The source states that Chapters 4 and 5 contain specific exceptions to the allowable height.
    • The table includes NS and UL entries; the source footnotes state that NS is only for evaluation of existing building height under the International Existing Building Code and that other entries have sprinkler-related conditions.

    allowable building height: occupancy-classification and construction-type specific values in Table 504.3 feet above grade plane (See Chapters 4 and 5 for specific exceptions.)

    “Allowable Building Height in Feet Above Grade Plane”
  • Accessory dwellingsAllowed (with conditions)

    Accessory dwelling units in portions of Washington cities, towns, and counties located within designated urban growth areas and subject to the Growth Management Act requirements

    • Cities and counties planning under the chapter must adopt or amend ordinances and development, zoning, and other official controls to implement the statutory requirements.
    • The requirements apply only in portions of towns, cities, and counties within designated urban growth areas.
    • Local governments may still apply public-health, safety, building-code, environmental-permitting, on-site-wastewater, and generally applicable development regulations.
    • Local governments may restrict or prohibit ADUs where development is restricted because of on-site sewage infrastructure, critical areas, or other unsuitable physical characteristics.
    • Under RCW 36.70A.681, at least two ADUs must be allowed on qualifying lots in configurations specified by statute, subject to listed exceptions and limitations.
    • The statutory requirements do not apply to lots designated with critical areas or buffers, or to specified impaired or threatened potable-water-reservoir watersheds.

    minimum ADUs in qualifying configurations: >= 2 accessory dwelling units per qualifying lot (Applies to lots in all zoning districts within an urban growth area that allow single-family homes, subject to statutory exceptions.)

    “The city or county must allow at least two accessory dwelling units on all lots that are located in all zoning districts within an urban growth area that allow for single-family homes in the following configurations:”
  • Well permitLimited

    Groundwater appropriation serving property or development in Chelan County.

    • A groundwater withdrawal permit is required above the stated exemptions.
    • Exceptions include stock watering, lawn or noncommercial garden watering not exceeding one-half acre, and single or group domestic use not exceeding 5,000 gallons per day.

    daily domestic use exemption: <= 5000 gallons per day (single or group domestic uses) · lawn or noncommercial garden exemption: <= 0.5 acre (watering a lawn or noncommercial garden)

    “no withdrawal of public groundwaters of the state shall be begun, nor shall any well or other works for such withdrawal be constructed, unless an application to appropriate such waters has been made to the department and a permit has been granted by it as herein provided: EXCEPT, HOWEVER, That any withdrawal of public groundwaters for stock-watering purposes, or for the watering of a lawn or of a noncommercial garden not exceeding one-half acre in area, or for single or group domestic uses in an amount not exceeding five thousand gallons a day [...] is and shall be exempt from the provisions of this section”
  • Agricultural exemptionAvailable (with conditions)

    Temporary growing structures used solely for production of horticultural plants in Washington.

    • The exemption is limited to temporary growing structures.
    • The structures must be used solely for production of horticultural plants, including ornamental plants, flowers, vegetables, and fruits.
    • The statute states that a temporary growing structure is not considered a building or structure for purposes of chapter 19.27 RCW.
    • This is not a general exemption for residences or all agricultural buildings.
    “The provisions of this chapter do not apply to temporary growing structures used solely for the production of horticultural plants including ornamental plants, flowers, vegetables, and fruits. A temporary growing structure is not considered a building or structure for purposes of this chapter.”
    One more reviewed finding on this topic
    • Available (with conditions) — Washington contractor-registration exemption for construction or operations incidental to farming, agriculture, horticulture, and related activities.
      “(10) Any construction or operation incidental to the construction and repair of irrigation and drainage ditches of regularly constituted irrigation districts or reclamation districts; or to farming, dairying, agriculture, viticulture, horticulture, or stock or poultry raising; or to clearing or other work upon land in rural districts for fire prevention purposes; except when any of the above work is performed by a registered contractor;”
  • Driveway accessRequired

    Approaches or driveway connections from abutting property to Washington county roads.

    • Permission must be obtained from the county board before construction.
    • Counties may adopt reasonable approach-construction rules, including culvert, fill-depth, and drainage requirements.
    • Construction must be supervised by the county road engineer and paid for by the person benefited.
    • Violation is a misdemeanor.
    “No person shall be permitted to build or construct any approach to any county road without first obtaining permission therefor from the board.”
    One more reviewed finding on this topic
    • Required — Approach roads and driveway connections constructed on Washington state highway rights-of-way.
      “No person, firm, or corporation may be permitted to build or construct on state highway rights-of-way any approach road or any other facility, thing, or appurtenance not heretofore permitted by law, without first obtaining written permission from the department.”
  • Campground & park staysLimited

    Camping and temporary occupancy in Washington State Parks facilities

    • Camping is permitted only in areas specifically designated or marked for camping, or as directed by a ranger.
    • State park facilities may not be used for residence purposes.
    • Continuous occupancy is limited to no more than 10 nights in one park within a 30-day period and no more than 90 nights per calendar year in all state parks, subject to stated qualifications in WAC 352-32-280 and WAC 352-32-285.
    • Occupants must vacate by 1:00 p.m. when the applicable fee is unpaid, the occupancy limit expires, or the site is reserved by another party; an additional camping fee may apply after checkout.

    maximum stay in one park: <= 10 nights per 30-day period (Limitations do not apply to individuals qualifying under WAC 352-32-280 and WAC 352-32-285.) · maximum stay in all state parks: <= 90 nights per calendar year (Limitations do not apply to individuals qualifying under WAC 352-32-280 and WAC 352-32-285.) · checkout time: 1:00 p.m. (Applies when the fee is unpaid, the occupancy limit has expired, or the site is reserved by another party.)

    “The maximum length of stay shall be no more than 10 nights in one park within a 30-day period. Total nights stayed by the same camping party must not exceed 90 nights per calendar year in all state parks. These limitations shall not apply to those individuals who meet the qualifications of WAC 352-32-280 and 352-32-285.”
    One more reviewed finding on this topic
    • Limited — Recreational vehicles in the context of Washington's manufactured/mobile-home community statutes
      “(12) "Recreational vehicle" means a travel trailer, motor home, truck camper, or camping trailer that is primarily designed and used as temporary living quarters, is either self-propelled or mounted on or drawn by another vehicle, is transient, is not occupied as a primary residence, and is not immobilized or permanently affixed to a manufactured/mobile home lot.”
  • county zoning authorityGeneral

    Washington counties adopting zoning and related official controls for county jurisdiction, including unincorporated areas.

    • A county must create a planning agency as authorized in RCW 36.70.030 and RCW 36.70.040 before engaging in the chapter's planning program.
    • Zoning maps may be adopted only for areas covered by a comprehensive plan containing at least a land use element and a circulation element.
    • Zoning regulations may address land uses, building location and dimensions, yards and open spaces, population density, lot coverage, parking, and minimum gross floor area requirements for single-family detached dwellings.
    • The cited enabling provisions do not state a population threshold, named-county limitation, or special geographic limitation.
    “Any board, by ordinance, may establish classifications, within each of which, specific controls are identified, and which will regulate:”
  • county building authorityGeneral

    Washington counties requiring and enforcing building permits and adopting amendments to the state building code for residential construction within county jurisdiction, including unincorporated areas.

    • The state building code must be enforced by counties and cities within their jurisdictional boundaries.
    • A county without a building department must contract with another county, city, or approved inspection agency for enforcement.
    • County amendments may not diminish the minimum performance standards and objectives of the state building code.
    • Residential-building amendments are subject to approval by the state building code council under RCW 19.27.074(1)(b), except as provided by statute.
    • The building-permit definition incorporates exemptions in International Building Code section 105.2 and International Residential Code section R105.2.
    • Counties may adopt permit exemptions for certain specified R-3 or M-1 construction or alteration with total fair market value not exceeding $1,500, but the exemption does not remove substantive code standards.

    permit-exemption fair-market-value ceiling: <= 1500 USD (Applies only to certain construction or alteration of group R, division 3, or group M, division 1 occupancies under RCW 19.27.060(7); substantive code standards still apply.)

    “The state building code required by this chapter shall be enforced by the counties and cities. Any county or city not having a building department shall contract with another county, city, or inspection agency approved by the county or city for enforcement of the state building code within its jurisdictional boundaries.”

Still unanswered

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

  • Certificate of occupancy — Certificates of occupancy in unincorporated Chelan County.
  • Local zoning — Aggregate local zoning across Chelan County municipalities and unincorporated areas.
  • Zoning districts — Published zoning-district map or complete district schedule for unincorporated Chelan County.
  • Minimum lot size — Minimum lot size in unincorporated Chelan County.
  • Setbacks — Building setbacks in unincorporated Chelan County.
3 more unanswered
  • Lot coverage
  • Camping on your land
  • Off-grid sanitation

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.

Water rights & wells in Chelan County

Whether a new home can legally get its own water here — the sub-state groundwater regime, from Washington’s water agency.

Actively managed

This basin is under active state management — new water use is scrutinized, though a domestic well is usually still allowed.

Household wellExempt up to a limit

RCW 90.44.050 exempts up to 5,000 gpd for domestic use, but the 2018 Streamflow Restoration Act caps NEW permit-exempt domestic wells at 3,000 gpd/connection in some basins and 950 gpd (350 gpd indoor in drought) in others, and new post-2020 wells in the adjudicating Nooksack basin are limited to ~500 gpd indoor.

Limit: 5,000 gpd base (RCW 90.44.050); capped to 3,000 or 950 gpd/connection in streamflow-restoration basins; ~500 gpd indoor for new Nooksack wells

Washington Dept of Ecology — Groundwater permit exemption ↗
  • Wenatchee River Basin Instream Flow Rule (WRIA 45)partial of county

    WAC 173-545 establishes minimum instream flows; new appropriations (incl. permit-exempt in hydraulic continuity) are junior and interruptible when flows fall below minimums.

    WA Dept of Ecology ↗

Hybrid state (appropriation + riparian). Groundwater rules change and basin boundaries follow the aquifer, not the county line — confirm current well and appropriation rules with the Washington state water agency before you buy or drill.Groundwater governance as of Jul 2026, cited to each administering agency.

Living off-grid in Chelan County, Washington

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

Chelan County scores 52/100 on the Bolthole Index, a solid county profile. Its strengths: sparse surroundings — about 6,044 people within a 30-minute drive. Watch-outs: higher long-term carry cost and elevated current hazard exposure.

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

Chelan County requires a building permit only in limited cases (such as floodplains or specific zones), and it enforces county zoning. Onsite septic is permitted by Chelan-Douglas Health District. 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.

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

Living in an RV on your own land in Chelan County is limited to specific cases: Permanent dwelling use of true park model RVs in unincorporated Chelan County. An approved county placement permit is required. The unit must be ANSI A119.5 certified, have a Washington State Labor and Industries insignia, be on a permanent foundation, and have approved utilities. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Chelan County, Washington?

Land in Chelan County runs about $18,894 per acre, based on the latest county data.

What is the water situation in Chelan County?

Chelan County gets about 37.6" of rain a year, with severe drought in roughly 6.8% of years. On water rights, Chelan County lies in the Wenatchee River Basin Instream Flow Rule (WRIA 45) — WAC 173-545 establishes minimum instream flows; new appropriations (incl. permit-exempt in hydraulic continuity) are junior and interruptible when flows fall below minimums..

How remote is Chelan County?

A representative private-land location has about 6,044 people within a 30-minute drive and 259,574 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.

Off-grid gear

Going off-grid in Chelan County means bringing your own water and power. The kit we’d start with:

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How Chelan compares in Washington

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