Stevens County, Washington requires a building permit for most construction in unincorporated areas, issued by the county's Building Division, and enforces zoning under Title 3 of the county code12. On-site sewage permits and inspections go through the Northeast Tri County Health District's Environmental Health Department, not the county building department3. You can work on your own property without registering as a contractor, though building, electrical and plumbing permits still apply4.
At a glance
- Building permit
- Required for most construction in unincorporated Stevens County1
- Zoning
- Yes, under county code Title 3; specifics depend on your parcel's district2
- Septic permit
- Required; issued by the Northeast Tri County Health District, not the county3
- Owner-builder exemption
- Yes, from contractor registration on your own property; permits are still required45
- Tiny home occupancy
- Allowed statewide up to 400 sq ft under the WA Building Code; local approval still applies6
- Small-project permit exemption
- Up to $1,500 in minor work per year, only if the county has adopted the exemption (unconfirmed here)7
- Septic permit validity
- 3 years from issuance8
- Nearest city of 100,000+
- About 54 miles from the county center9
Who to call
Building permits
Stevens County Building Division
Building permits and inspections in unincorporated Stevens County, part of the Land Services Department
260 S. Oak St., Colville, WA 99114
Planning & zoning
Stevens County Planning Division
Zoning, subdivision and land-use questions for unincorporated Stevens County under county code Title 3
260 S. Oak St., Colville, WA 99114
Septic permits
Northeast Tri County Health District, Environmental Health Division
On-site sewage (septic) system design review, permitting and inspection for Stevens County
240 E Dominion Ave, Colville, WA 99114
Contact details are copied from each office’s official page and were checked against it on September 27, 2026.
Do you need a building permit in Stevens County, Washington?
Stevens County requires a building permit for most construction in unincorporated areas, issued by the Building Division of the county's Land Services Department under state and local building codes1. Washington requires every county and city to enforce the state building code, currently based on the 2021 International Building Code with a code effective date of July 1, 2024 and a Washington State Energy Code effective date of March 15, 20241011. Washington law lets a county or city adopt a narrow permit exemption for minor work, up to $1,500 in total valuation per year, on certain small residential or storage projects that don't touch structural components or reduce egress, light, air or ventilation, but whether Stevens County has adopted that exemption is unconfirmed here, so ask the Building Division before you skip a permit for a small project7. A Stevens County building permit is your authorization to begin construction, and the county requires you to call for inspections once it's issued12.
Who is the Stevens County Building Division, and how do you reach them?
The Stevens County Building Division is at 260 S. Oak St. in Colville, Washington, open Monday through Friday, 8:00 a.m. to 4:30 p.m.13. Reach the division at 509-684-8325 or by email at [email protected]13. The Planning Division shares the same Colville office and handles zoning and land-use questions; reach it separately at 509-684-2401 or [email protected]14. To schedule an inspection once your permit is issued, call the Building Division at least two working days in advance, since the daily inspection schedule fills quickly, and every required inspection, including the final one, must be approved before the county treats your project as complete or occupiable1315.
Does Stevens County have zoning?
Stevens County administers zoning under Title 3 of the county code, and the Planning Division publishes an Interactive Land Use & Zoning Map so you can look up the zoning that applies to a specific parcel, with printed maps also available through the GIS and Mapping Services Department214. The specific numeric standards for your parcel, minimum lot size, setbacks, lot coverage and maximum building height among them, were not published on the pages reviewed for this guide, so confirm them with the Planning Division for your exact parcel before you plan a build14. Washington's newer statewide accessory-dwelling-unit law requires a city or county to allow at least two ADUs on qualifying lots, but only inside a designated urban growth area, so it only matters here if your specific parcel sits inside one of Stevens County's urban growth areas16. Washington's state building code also sets a minimum dwelling size of at least 190 square feet of habitable space, with at least one room of 120 square feet or more and other habitable rooms of at least 70 square feet, though kitchens are excepted from that room-size minimum17.
How do septic permits work in Stevens County?
On-site sewage permits and inspections in Stevens County go through the Northeast Tri County Health District's Environmental Health Department, not the county building department3. Reach that department at 240 E Dominion Ave in Colville, or by phone at 509-684-226218. Once your system design is approved, NETCHD issues an installation permit that is valid for 3 years from the date of issuance, and installation may begin only after that permit is in the installer's hands8. Before the system is covered, you must notify NETCHD and give at least 48 hours' notice to schedule the final inspection, and any deficiencies found must be corrected and reinspected before final approval19. Only about 4.5% of Stevens County's soils carry no severe limitation for a conventional septic drain field under the USDA soil survey, among the lowest shares on this site, so budget for a site evaluation to turn up limits that call for an engineered or alternative system on most parcels20. Whether Stevens County requires any separate approval for a private domestic well beyond NETCHD's septic process is unconfirmed; ask the Building Division before you drill13.
Can you live in an RV, manufactured home or tiny home on your land in Stevens County?
Whether you can live in an RV on your own land long-term in Stevens County is unconfirmed; no official county rule addressing RV occupancy on private property was found, so call the Building Division or Planning Division before you buy with that plan1314. A tiny house can be occupied statewide in Washington as a dwelling up to 400 square feet, including its kitchen, bathroom and sleeping or living area, provided it's built to the Washington State Building Code, but the approval process depends on where it's built and still runs through the local building department for its foundation, installation and location6; Stevens County's own specific process for a tiny house was not confirmed on the pages reviewed, so bring your plans to the Building Division early13. Whether and where a manufactured home can be sited on your land in Stevens County is likewise unconfirmed; ask the Building Division or Planning Division before you buy with that plan1314.
Building a home in Stevens County: the steps, in order
- Look up your parcel's zoning district on the county's Interactive Land Use & Zoning Map, or call the Planning Division to confirm setbacks, lot coverage and other district standards before you design your project142.
- Apply for septic design approval and an installation permit with the Northeast Tri County Health District before you finalize your building plans; the permit is valid 3 years from issuance188.
- Submit a building permit application to the Stevens County Building Division; the permit is your authorization to begin construction1312.
- If you'll act as your own contractor on your own property, Washington's contractor-registration exemption may cover you, though it does not replace the building, electrical or plumbing permits themselves45.
- Call the Building Division to schedule inspections at least two working days in advance once work is underway, since the daily schedule fills quickly1315.
- Before the septic system is covered, notify NETCHD and give at least 48 hours' notice for the final inspection1819.
- Get every required inspection approved, including the final one, before the county will treat the project as complete or occupiable15.
What to check before you buy land in Stevens County
Stevens County gets about 23.7 inches of rain a year and spends about 8% of years in severe drought, and only 29.1% of its land sits at 15% slope or less, so expect steeper, more mountainous terrain than in many rural counties on this site212223. About 73.3% of the county is wooded and 21.9% is federal land, reflecting the Colville National Forest lands within the county, so confirm your specific parcel's ownership and access before you buy2425. If your driveway will connect to a county road, you need the county board's permission before you build the approach, and the county road engineer must supervise construction, which you pay for; connecting to a state highway right-of-way instead requires written permission from the Washington State Department of Transportation2627. Confirm whether your land sits in a floodplain before you buy; Washington requires you to contact your local government for a floodplain development permit before any development work there, and some local governments regulate a larger area than FEMA's flood maps show28. A typical Stevens County property carries an effective property tax rate near 0.7% and a median tax bill around $2,016 a year, against a typical home insurance premium near $1,383 a year, though your own parcel's numbers depend on its assessed value and coverage293031. The nearest city of 100,000 or more people is about 54 miles from the county's center9.
Watch-outs
- We could not confirm Stevens County's numeric zoning standards, including minimum lot size, setbacks, lot coverage and building height, so verify them for your specific parcel with the Planning Division before you plan a build14.
- Whether Stevens County allows long-term RV occupancy, and where a manufactured home or tiny house can be sited, is unconfirmed at the county level; call the Building Division or Planning Division before you buy land with either plan1314.
- Only about 4.5% of Stevens County's soils carry no severe limitation for a conventional septic drain field, so budget for the possibility of an engineered or alternative system and get a site evaluation from NETCHD before you commit to a lot20.
Sources
- Stevens County - Building Division (2026 county census)
- Stevens County - Development, Zoning and Subdivision Regulations (Title 3) (2026 county census)
- Northeast Tri County Health District - Septic Permit Applications (2026 county census)
- Washington State Legislature - RCW 18.27.090 Exemptions (2026 county census)
- RCW 18.27.090 — Exemptions, quoted and re-checked
- Tiny Houses (Washington statewide rule), quoted and re-checked
- WAC 51-16-080 — Permit exemptions guideline (Washington statewide rule), quoted and re-checked
- Septic Permit Applications, quoted and re-checked
- Distance to the nearest metro area: Bolthole Index county data
- Building Division, quoted and re-checked
- RCW 19.27.031 — State building code—Adoption—Conflicts—Opinions (Washington statewide rule), quoted and re-checked
- Building Division, quoted and re-checked
- Stevens County Building Division (stevenscountywa.gov)
- Stevens County Planning Division (stevenscountywa.gov)
- Building Division, quoted and re-checked
- RCW 36.70A.680 — Accessory dwelling units—Local regulation (Washington statewide rule), quoted and re-checked
- WAC 51-50-1208 — Section 1208—Interior space dimensions (Washington statewide rule), quoted and re-checked
- Northeast Tri County Health District, Environmental Health Division (netchd.org)
- Septic Permit Applications, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- Annual precipitation: Bolthole Index county data
- Share of years in severe drought: Bolthole Index county data
- Share of land at 15% slope or less: Bolthole Index county data
- Wooded share of land: Bolthole Index county data
- Federal land share: Bolthole Index county data
- RCW 36.75.130 — Approaches to county roads—Rules regarding construction—Penalty (Washington statewide rule), quoted and re-checked
- RCW 47.32.150 — Approach roads, other appurtenances—Permit (Washington statewide rule), quoted and re-checked
- Planning & regulation — Washington State Department of Ecology (Washington statewide rule), quoted and re-checked
- Effective property tax rate: Bolthole Index county data
- Median property tax bill: Bolthole Index county data
- Typical home insurance premium: Bolthole Index county data
Written September 27, 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.