Bolthole Index

Ferry County, Washington

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

64Index Score / 100
#7 of 39 in Washington

Unincorporated Ferry County, Washington requires building permits for permanent buildings and additions, subject to exceptions, and final inspection before occupancy12. Ferry County has no conventional use zoning, but lot-size, density, Curlew Lake and resource-land controls apply34. Inside Republic, obtain building-permit applications at Town Hall; Northeast Tri County Health District handles septic systems in Ferry County, including inside city limits56.

At a glance

Building permit
Required for permanent buildings and additions; approved plans are required before issuance1
Zoning
No conventional use zoning; minimum lot sizes, residential density, Curlew Lake and agricultural/forest designations still control development34
Septic
NETCHD requires an approved design and installation permit before work; inspection is required before covering the system789
Floodplain
A county Flood Damage Prevention Ordinance requires a development permit before construction in a mapped special flood hazard area, administered by the Planning Director10
Minimum lot size
New subdivision lots: 12,500 sq ft with community water and sewer, 1 acre with community water and individual sewer, or 2.5 acres with individual water and sewer; special-area restrictions also apply11
RV / tiny home living
A tiny house up to 400 sq ft must meet the state building code and local siting requirements; ask Planning before relying on long-term RV occupancy12
Owner-builder
Contractor-registration exemption for work on your own property or personal residence; excludes contractor work on your property for sale, demolition or lease and does not waive permits13
Construction design standards
40 psf minimum roof snow load countywide (55 psf suggested above 3,000 ft elevation), 110 mph basic wind speed, and a 30-inch minimum frost depth for footings14

Who to call

Building permits

Ferry County Building Department

Building permit applications, plan review and inspections for new construction, out-buildings, mobile homes, and plumbing/mechanical work in Ferry County; also posts the county's construction design-data standards (snow load, wind, frost depth)

(509) 775-5225

build@co.ferry.wa.us

350 East Delaware Ave, Republic, WA 99166

Zoning

Ferry County Planning Department

Minimum lot size, residential density, Curlew Lake sub-area plan, and agriculture/forest land-of-long-term-significance designation questions for Ferry County

(509) 775-5225 ext 3101

Septic permits

Northeast Tri County Health District – Ferry County (Republic) Office

Onsite sewage (septic) system permits, site evaluations and inspections for Ferry County

509-775-3111

147 N Clark, Suite 1, Republic, WA 99166

Roads & driveways

Ferry County Public Works

County road maintenance and road-approach (driveway) permit applications for connections to Ferry County roads

(509) 775-5225 ext. 2507

pstoddard@co.ferry.wa.us

350 E Delaware Ave. #8, Republic, WA 99166

Contact details are copied from each office’s official page and were checked against it on October 12, 2026.

Off-grid gear

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

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

Unincorporated Ferry County requires a building permit for permanent buildings and additions, subject to exceptions; approved final plans must address the site, sewage, drainage, access, foundation and other project details1. Washington’s building code applies in every county and city, subject to statutory exceptions15. Ferry County provides application packages for homes, mobile homes, outbuildings, commercial projects, and plumbing and mechanical work16. Permit-required work must remain accessible for inspection and pass final inspection before occupancy2. A person working on their own property or personal residence may qualify for Washington’s contractor-registration exemption, but contractor work on their own property for sale, demolition or lease is excluded; building, electrical, plumbing and septic permits still apply13. False information used to obtain the exemption can result in building-permit forfeiture17. Ask the Building Department for current building-permit fees1814.

Who issues building permits in Ferry County, and how do you reach the office?

For unincorporated Ferry County, start with the Ferry County Building Department for building applications and inspections1914. Inside Republic, building-permit applications come from Town Hall; septic remains with Northeast Tri County Health District56. Ferry County’s construction design data specifies a minimum roof snow load of 40 psf countywide, suggests 55 psf or more at elevations of 3,000 feet or more, sets a 110 mph basic wind speed and requires a 30-inch minimum frost depth14. Planning answers lot-size, density, Curlew Lake and resource-land questions and administers floodplain development permits2010. Ask Public Works about the county-road approach process, whose operative requirements we could not confirm21.

Does Ferry County have zoning?

Unincorporated Ferry County has no conventional zoning that limits what may be built, but minimum lot sizes and residential density controls apply3. On lots larger than 2.5 acres, residential development is limited to 1 single-family dwelling per 2.5 acres and/or 1 business use per lot3. New subdivision lots need at least 12,500 square feet with community water and sewer, 1 acre with community water and individual sewer, or 2.5 acres with individual water and sewer11. Curlew Lake Sub Area Plan controls and Agriculture or Forest Land of Long-Term Commercial Significance designations impose distinct density and parcel-division rules4. Designated agricultural land generally cannot be divided below 20 acres and allows no more than 1 residence per 20 acres, with exceptions for extended family and full-time employees who work and live on the farm22. Before buying or dividing land, ask Planning which designations apply; septic suitability also affects proposed subdivisions2320.

How do septic permits work in Ferry County?

Northeast Tri County Health District administers on-site sewage in Ferry County and permits systems with design flows under 3,500 gallons per day2425. Submit the application, ownership verification, site plan, directions and completed Planning Office site analysis; NETCHD reviews the site and design before issuing an installation permit26. Installation may begin only after the permit is issued, and the permit remains valid for 3 years24. Before the system is covered, NETCHD requires a final inspection and completed as-built form; schedule the inspection with at least 48 hours' notice2427. Only 7.2% of Ferry County soils are rated “not limited” for a conventional drain field; that calls for a site evaluation, not a conclusion that septic is impossible28. Residential pit toilets are limited to parcels of at least 20 acres29.

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

Washington defines a tiny house or tiny house on wheels up to 400 square feet, including its kitchen, bathroom and sleeping or living area, but the home must meet the state building code and local foundation, installation and location requirements12. Ferry County's materials do not confirm a local tiny-home occupancy rule, minimum dwelling size or accessory-dwelling rule, so take the parcel and proposed design to the Building and Planning departments before purchase1420. Washington's definition of a recreational vehicle describes temporary, transient quarters that are not a primary residence; it does not grant permission for residential use on private land30. Ferry County's documented RV-park standards require separation between RV spaces and setbacks from property lines and public rights-of-way, but those standards do not authorize long-term RV occupancy outside an approved RV park3132. Ask Planning before treating an RV as temporary housing or a permanent dwelling20.

What are the steps to building a home in Ferry County?

  1. Ask the Planning Department to confirm the parcel's minimum lot size, density, Curlew Lake controls and any agriculture or forest designation3420.
  2. Complete the appropriate Building Department package, include the required final plans and request the current fee schedule11618.
  3. If the site is in a mapped special flood hazard area, obtain a floodplain development permit from Planning before work begins10.
  4. Submit ownership verification, a site plan, directions and the completed Planning Office site analysis with the septic application; obtain design approval and the installation permit before installing the system2624.
  5. Keep permit-required building work visible for inspection, and arrange septic inspection before the system is covered227.
  6. Ask Public Works about a county-road approach; a connection within a state-highway right-of-way requires written WSDOT permission2133.

What should you check before buying land in Ferry County?

Only 7.2% of Ferry County soils are rated “not limited” for a conventional drain field; a site evaluation can identify whether the parcel needs an engineered system28. Just 28.7% of county land has a slope of 15% or less, and 75.4% is forested, so inspect the building pad, driveway route and clearing needs3435. Washington exempts domestic groundwater use up to 5,000 gallons per day per project from a water-right permit, aggregating multiple wells; other water-law and local limits still apply36. Submit a notice of intent to Ecology 72 hours before drilling; the notice does not approve water use36. Ferry County building-permit applicants must show an adequate potable water supply1. Ask Planning about resource-land and Curlew Lake controls and check mapped flood hazards before siting improvements41020. Ferry County’s effective property-tax rate is about 0.7%, and its median annual property-tax bill is about $1,7923738.

Watch-outs

  • Ferry County’s absence of conventional use zoning does not waive density, Curlew Lake, agricultural/forest designation or floodplain requirements; ask Planning which controls apply to the parcel341020.
  • We could not confirm Ferry County’s long-term RV or private-land camping rules; ask Planning, because RV-park setbacks do not authorize residential RV use on private land313220.
  • On designated agricultural land, a nonagricultural accessory use may convert no more than one acre and must support rather than interfere with the agricultural use39.

Sources

  1. Building Permit, quoted and re-checked
  2. WAC 51-11R-10500 Inspections, quoted and re-checked
  3. Ferry County Zoning & Lot Size FAQs, quoted and re-checked
  4. Ferry County Zoning & Lot Size FAQs, quoted and re-checked
  5. Republic: Republic Code § 17.12.030, Permits required (Ferry County), quoted and re-checked
  6. Septic Permit Applications, quoted and re-checked
  7. Northeast Tri County Health District Regulation 03-2025: On-Site Sewage Systems, quoted and re-checked
  8. On-Site Sewage Permit Application, quoted and re-checked
  9. Septic Permit Applications, quoted and re-checked
  10. Building Department, quoted and re-checked
  11. Ferry County Zoning & Lot Size FAQs, quoted and re-checked
  12. Tiny Houses (Washington statewide rule), quoted and re-checked
  13. RCW 18.27.090: Exemptions, quoted and re-checked
  14. Ferry County Building Department (ferry-county.com)
  15. RCW 19.27.031: State building code—Adoption—Conflicts—Opinions, quoted and re-checked
  16. Building Department, quoted and re-checked
  17. RCW 18.27.090: Exemptions, quoted and re-checked
  18. Building Department, quoted and re-checked
  19. Ferry County Building Department (2026 county census)
  20. Ferry County Planning Department (cms5.revize.com)
  21. Ferry County Public Works (ferry-county.com)
  22. Ferry County Zoning & Lot Size FAQs, quoted and re-checked
  23. Ferry County Zoning & Lot Size FAQs, quoted and re-checked
  24. Septic Permit Applications, quoted and re-checked
  25. Northeast Tri County Health District – Ferry County (Republic) Office (netchd.org)
  26. On-Site Sewage Permit Application, quoted and re-checked
  27. On-Site Sewage Permit Application, quoted and re-checked
  28. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
  29. Northeast Tri-County Health District Regulations 03-2025, On-Site Sewage Systems, quoted and re-checked
  30. app.leg.wa.gov (Washington statewide rule), quoted and re-checked
  31. Ferry County Application for Binding Site Plan, quoted and re-checked
  32. Ferry County Application for Binding Site Plan, quoted and re-checked
  33. RCW 47.32.150 — Approach roads, other appurtenances—Permit (Washington statewide rule), quoted and re-checked
  34. Share of land at 15% slope or less: Bolthole Index county data
  35. Wooded share of land: Bolthole Index county data
  36. Groundwater permit exemption (Washington statewide rule), quoted and re-checked
  37. Effective property tax rate: Bolthole Index county data
  38. Median property tax bill: Bolthole Index county data
  39. cms5.revize.com, quoted and re-checked

Written October 12, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

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Compared with neighboring counties

Like all 6 of its neighbors, Ferry County requires a building permit for a home.

RuleFerry CountyStevens CountyOkanogan CountyPend Oreille CountyLincoln CountyDouglas CountySpokane County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesYesYes
Septic permitsNortheast Tri County Health DistrictNortheast Tri County Health DistrictOCPHDNETCHDCounty Public HealthChelan-Douglas Health DistrictSpokane Regional Health District

County locator

Ferry County in Washington

64
County map
Ferry County highlighted among the Washington counties · colored by Index score

How Ferry County scores

Seclusion92100% ev.
Self-Sufficiency48100% ev.
Admin Boringness42100% ev.
Durability44100% ev.
Property Autonomy50100% ev.
Carry Cost81100% 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 →

$287kTypical home
0.7%Property tax
$929Land / acre
20.5"Annual rain
8.4% of yrsSevere drought
2.4 / yr (+2.1)Mid-century 100°F days
25.7 daysMid-century dry spell
0.84" (+8.9%)Mid-century 1-day rain
1.37×Wildfire change factor
100%Forward climate coverage
$1,433Home insurance / yr
1.1% / yrInsurance growth
2.06%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
3,794People within 30 min
80,584People within 2 hr
4,420Radius comparison (15 mi)
3.4People / sq mi
34.9%Federal land
28.7%Land at 15% slope or less
7.2%Soils rated "not limited" for septic (strict USDA rating)
100,776 acWorkable land screen
75.4%Wooded land
44.4 tonsBiomass / forest ac
43.2°FAvg temp

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Cities and towns in Ferry County

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

Answers from the rulebook for Ferry County

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

Ferry County rules

  • County-wide zoningPresent (with conditions)

    County land-use regulation in Ferry County, including development regulations and designated agricultural and forest lands.

    • The county FAQ states that Ferry County has no conventional zoning that limits what can be built, but it has minimum property sizes and other zoning-type restrictions.
    • Curlew Lake Sub Area Plan restrictions apply within 500 feet of the shoreline and beyond 500 feet.
    • Residential development on lots larger than 2.5 acres is limited to one single-family dwelling per 2.5 acres and/or one business use per lot.

    minimum development density near Curlew Lake shoreline: >= 2.5 acres (Property within 500 feet of Curlew Lake shoreline.) · residential density: per 1 single-family dwelling per 2.5 acres (Lot larger than 2.5 acres.)

    “NO and Yes. No, Ferry County does not have zoning in the aspect that would limit what you can build. BUT, Ferry County does have minimum property sizes.”
    One more reviewed finding on this topic
    • Present (with conditions) — County development regulations and land-use designations in Ferry County.
      “NO and Yes. No, Ferry County does not have zoning in the aspect that would limit what you can build. BUT, Ferry County does have minimum property sizes.”
  • Zoning districtsPartial

    County land-use controls in Ferry County, including designated agricultural and forest lands and the Curlew Lake Shoreline Area

    • The county FAQ says Ferry County does not have zoning in the aspect that would limit what can be built, but it also identifies minimum property sizes and other zoning-type restrictions.
    • Curlew Lake development is subject to the Curlew Lake Sub Area Plan and other applicable regulations.
    • Agriculture and Forest Land of Long-Term Commercial Significance have classification-based density and parcel-division controls.
    • This source does not establish that conventional zoning districts are published.
    “NO and Yes. No, Ferry County does not have zoning in the aspect that would limit what you can build. BUT, Ferry County does have minimum property sizes.”
    One more reviewed finding on this topic
    • Partial — County land-use designations and special-area controls rather than a conventional countywide use-district zoning map.
      “Yes. We do have land that has been classified as Agriculture Land and/or Forest Land of Long-Term Significance.”
  • Minimum lot sizeSpecified

    New subdivisions and designated areas in Ferry County

    • A new subdivision is subject to the listed minimum lot sizes.
    • Additional Curlew Lake Shoreline Area restrictions apply.
    • Agriculture Land of Long-Term Commercial Significance may not be divided into parcels less than 20 acres and is limited to no more than one residential unit per 20 acres, except for stated extended-family or full-time-farm-employee residences.
    • Forest Land of Long-Term Commercial Significance has additional class-specific acreage and density rules, including 20-acre, 10-acre, and other stated thresholds.

    community water and community sewer: 12500 square feet (new subdivision residential lot) · community water and individual sewer: 1 acre (new subdivision lot) · individual water and individual sewer: 2.5 acres (new subdivision lot) · agriculture land parcel minimum: >= 20 acres (designated Agriculture Land of Long-Term Commercial Significance)

    “A new subdivision of land is limited to the following minimum lot sizes: o 12,500 square feet for a residential lot that is to be served by community water and community sewer systems. o One acre for a lot to be served by community water and individual sewer system. o 2.5 acres for a lot to be served by individual water supply and individual sewer system.”
    One more reviewed finding on this topic
    • Specified — New subdivisions and designated areas in unincorporated Ferry County.
      “A new subdivision of land is limited to the following minimum lot sizes:”
  • SetbacksSpecified

    Recreational-vehicle park development standards in a Ferry County binding site plan.

    • These measurements apply to the RV-park standards listed in the county binding-site-plan application.
    • The document does not establish a single general setback applicable to every dwelling or structure in unincorporated Ferry County.
    • Other building, shoreline, critical-area, health, septic, and access requirements may apply.

    recreational vehicle separation from other recreational vehicles and structures: >= 10 feet · recreational vehicle setback from exterior property lines: >= 10 feet · recreational vehicle setback from public rights-of-way: >= 25 feet

    “YES / NO are recreational vehicles separated from each other and from other structures by at least 10 feet YES / NO are recreational vehicles setback from exterior property lines by at least ten (10) feet YES / NO are recreational vehicles set back from public rights-of-way by at least 25 feet”
  • Living in an RVLimited

    Recreational-vehicle park development reviewed through a Ferry County binding site plan.

    • RV spaces must be separated from each other and from other structures by at least 10 feet.
    • A central service building with necessary plumbing fixtures is required in RV parking areas providing spaces for dependent vehicles.
    • Service buildings must be conveniently located within approximately 300 feet of the spaces served.
    • The binding-site-plan document is a development-standards checklist and does not establish permission for unapproved long-term occupancy outside an RV park.

    separation between recreational vehicles and other structures: >= 10 feet · setback from exterior property lines: >= 10 feet · setback from public rights-of-way: >= 25 feet · service-building distance: <= 300 feet (approximately)

    “RECREATIONAL VEHICLE PARK DEVELOPMENT STANDARDS YES / NO are recreational vehicles separated from each other and from other structures by at least 10 feet YES / NO are recreational vehicles setback from exterior property lines by at least ten (10) feet YES / NO are recreational vehicles set back from public rights-of-way by at least 25 feet YES / NO is a central service building containing the necessary plumbing fixtures provided in recreational vehicle parking areas which provide parking spaces for dependent vehicles YES / NO are service buildings conveniently located within a radius of approximately 300 feet to the spaces served.”
  • Who permits septicLocal

    On-site sewage systems serving structures generating less than 3,500 gallons per day in Ferry, Pend Oreille, and Stevens Counties.

    • NETCHD administers proper siting and installation, operation and maintenance information, complaint response, installer and service-provider certification, and related environmental-health functions.

    service area: Ferry, Pend Oreille, and Stevens Counties · daily flow threshold: < 3500 gallons per day

    “Northeast Tri County Health District investigates complaints regarding septic systems in Ferry, Pend Oreille, and Stevens counties.”
    2 more reviewed findings on this topic
    • Local — On-site sewage systems in Ferry County within the Northeast Tri County Health District jurisdiction.
      “The Northeast Tri-County Health District has authority and approval over: (a) Systems with design flows through any common point up to 3,499 gallons per day; (b) Any Large On-Site Sewage System “LOSS” for which jurisdiction has been transferred to the Northeast Tri-County Health District from the Department of Health by contract.”
    • Local — On-site sewage systems in Ferry County administered by Northeast Tri County Health District.
      “Northeast Tri County Health District (NETCHD) permits on-site sewage systems with design flows of less than 3,500 gallons per day.”
  • Septic permitRequired

    Installation of on-site sewage systems in Ferry County.

    • A sewage-system design must be submitted and approved before the installation permit is issued.
    • Installation permits are valid for three years from issuance.
    • The Health District must be notified before installation is covered.

    permit validity: 3 years (from date of issuance)

    “If the design is approved, an installation permit will be issued. Permits are valid three years from the date of issuance.”
    One more reviewed finding on this topic
    • Required — On-site sewage system installation in Ferry County within NETCHD jurisdiction.
      “If the design is approved, an installation permit will be issued. Permits are valid three years from the date of issuance.”
  • Septic inspectionRequired

    Final inspection of installed on-site sewage systems in Ferry County.

    • The system must be inspected before being covered.
    • At least 48 hours’ notice is required to schedule the final inspection.
    • A reinspection and fee may be required if deficiencies are found.

    inspection notice: >= 48 hours (minimum notice for final inspection)

    “A minimum 48-hour notice is required to schedule a final inspection.”
    One more reviewed finding on this topic
    • Required — On-site sewage system installation in Ferry County.
      “Upon completion of the on-site system installation and before the system is covered, the Health District must be notified that the system is ready for inspection and the installer must submit an acceptable As-Built Drawing.”
  • Off-grid sanitationLimited

    Alternative or off-grid sanitation in Ferry County.

    • Sewage must pass through an approved OSS or approved public sewer.
    • Portable toilets serviced by a certified pumper and other alternative means may be allowed only for listed temporary or remote uses, or other uses approved in writing by the local health officer.
    • Pit toilets serving residential structures are allowed only on property of 20 acres or larger.

    minimum property size for residential pit toilet: >= 20 acres

    “Pit toilets serving residential structures shall only be allowed on property of 20 acres or larger.”
  • Agricultural exemptionConditional

    Additional residential uses on Ferry County-designated Agriculture Land of Long-Term Commercial Significance.

    • Agricultural land may not be divided into parcels less than 20 acres.
    • Residential development is limited to no more than one unit per 20 acres.
    • Additional residential units for extended family or full-time employees of a farm on which they work and live are excepted from that density statement.
    • Such additional uses should, where possible, be sited on soils other than prime soils or to minimize impact on agricultural production.

    minimum parcel division: >= 20 acres (additional residential uses described in the FAQ are not stated as a parcel-division exception) · residential density: 1 unit per 20 acres (extended family or full-time farm employees who work and live on the farm)

    “Shall be limited to residential development at a density of no more than 1 unit per 20 acres other than additional residential units for extended family or full-time employees of a farm upon which they work and live.”
    One more reviewed finding on this topic
    • Conditional — Agricultural accessory uses and activities on designated Agricultural Lands of Long-Term Commercial Significance.
      “Non-agricultural accessory uses and activities will be allowed as long as the uses and activities are consistent with the size, scale and intensity of the existing agricultural use of the property. Non-agricultural accessory uses shall not convert more than one acre of agricultural land to non-agricultural uses.”
  • Subdividing landRegulated (with conditions)

    New subdivisions in Ferry County

    • Minimum lot sizes depend on water and sewer service.
    • Additional restrictions apply to the Curlew Lake Shoreline Area.
    • Agriculture and Forest lands of Long-Term Commercial Significance have additional parcel-division restrictions.
    • On-site sewage review may also apply through NETCHD; NETCHD states that an application is complete when site-analysis approval is received from the county planning department and test holes are ready for inspection.
    “A new subdivision of land is limited to the following minimum lot sizes:”
    One more reviewed finding on this topic
    • Regulated (with conditions) — Subdivision and short-subdivision development in unincorporated Ferry County.
      “Subdivision Ordinances, including the Long Subdivision, Short Subdivision and Binding Site Plan Ordinances.”
  • Building in a floodplainRequired

    Construction or development within any area of special flood hazard in Ferry County, including structures, manufactured homes, fill, and other activities defined as development.

    • A development permit must be obtained before construction or development begins within an area of special flood hazard.
    • The ordinance applies to all special flood hazard areas within the jurisdiction of Ferry County.
    • The Ferry County Planning Director administers, implements, and enforces the ordinance and grants or denies development permit applications.
    • Applications use forms furnished by the floodplain administrator and may require plans in duplicate drawn to scale showing the nature, location, dimensions, and elevations of the area, structures, fill, storage, drainage facilities, and their locations.
    • Required application information includes lowest-floor elevation, floodproofing elevation and professional certification where applicable, watercourse alteration information, engineering analysis showing no rise of the Base Flood Elevation for proposed floodway development, and any other information reasonably required by the Floodplain Administrator.
    • Permit review must confirm ordinance compliance, all other required federal, state, and local permits, reasonable safety from flooding, and compliance with floodway encroachment provisions when applicable.
    • All development in special flood hazard areas remains subject to the ordinance and other applicable regulations.
    • The county building-department page directs applicants to contact the Planning Department for flood-hazard matters.
    “A development permit shall be obtained before construction or development begins within any area of special flood hazard established in Section 3.2.”
  • Permit feesPublished

    Ferry County planning and building permit fee schedule materials.

    • The county page identifies a Planning and Building Fees ordinance but the fee amounts were not available in the opened page.
    “Ordinances Ferry County Building Ordinance Planning and Building Fees Permit Applications”
  • Permit processPartial

    County planning and building permit process in Ferry County.

    • The county page provides separate mobile-home, outbuilding, plumbing/mechanical, residential, and commercial application packages.
    • The opened page did not provide complete processing times or all approval steps.
    “Mobile Home Permit Application Package Out Building Permit Application Package Plumbing & Mechanical Permit Application Residential Permit Application Package Commercial Permit Application Package”
    One more reviewed finding on this topic
    • Partial — On-site sewage permit processing for Ferry County properties.
      “The following pages describe the steps for application submittal through the sewage system installation process.”

Washington rules that apply here

  • Building permitLimited

    Construction and alteration activities governed by Washington's state building code, subject to local administration and locally adopted permit exemptions.

    • Cities and counties may choose whether to adopt the permit exemption guideline.
    • The exemption applies to certain Group R, Division 3 and Group M, Division 1 construction or alteration activities with total valuation not exceeding $1,500 in any twelve-month period.
    • The activity may not affect structural components or reduce existing egress, light, air, or ventilation conditions.
    • The exemption does not include electrical, plumbing, or mechanical activities; separate permits are required for those items unless otherwise exempted.
    • The permit exemption does not exempt work from substantive state building-code standards or other applicable laws and ordinances.

    maximum exempt valuation: <= 1500 USD per 12 months (Only where the applicable city or county adopts the exemption and all stated conditions are met.)

    “Cities and counties are permitted the option of adopting a one thousand five hundred dollar building permit exemption for certain construction and alteration activities for Group R, Division 3 and Group M, Division 1 Occupancies.”
    One more reviewed finding on this topic
    • Required — Construction of permanent buildings or additions to existing facilities in Ferry County, including unincorporated areas subject to county enforcement of the state building code.
      “Permits to construct permanent buildings or additions to existing facilities are required by counties and cities, except under certain circumstances.”
  • Owner-builder exemptionAvailable (with conditions)

    A person working on their own property or personal residence in Ferry County.

    • The exemption concerns Washington contractor-registration provisions, not building permits.
    • It does not apply when the person performs contractor activities on their own property for selling, demolishing, or leasing the property.
    • Separate electrical, plumbing, building-code, and permit requirements may still apply.
    • False information used to obtain the exemption can result in forfeiture of the building permit under RCW 18.27.110.
    “(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;”
    3 more reviewed findings on this topic
    • Available (with conditions) — Contractor-registration exemption for persons working on their own property or personal residence in Washington, including Ferry County.
      “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;”
    • Conditional — Washington contractor-registration exemption for owners and persons working on their own property, including property in Ferry County.
      “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;”
    • Conditional — 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 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;”
  • Building code adoptedAdopted (with conditions)

    The Washington State Building Code applies in all Washington counties and cities and includes the model codes adopted by reference in RCW 19.27.031, as amended by the Washington State Building Code Council.

    • The adoption is subject to exceptions stated in chapter 19.27 RCW and amendments adopted by the Washington State Building Code Council.
    • The 2021 International Building Code, including Appendix E, is adopted by reference with the exceptions noted in Title 51 WAC.
    • The Uniform Plumbing Code provisions affecting sewers or fuel gas piping are not adopted.
    • Only the portions of the International Wildland Urban Interface Code specifically referenced in RCW 19.27.560 are adopted.
    • The state building code is enforced by counties and cities; a county or city without a building department must contract with another county, city, or approved inspection agency.
    • The model codes are adopted or amended through a three-year state building code adoption cycle, subject to statutory interim, emergency, and legislative off-cycle amendments.

    International Building Code edition: 2021 (Including Appendix E; subject to exceptions in Title 51 WAC) · effective date of current WAC 51-50-003 adoption: 2024-03-15

    “there shall be in effect in all counties and cities the state building code [...] which are hereby adopted by reference:”
    2 more reviewed findings on this topic
  • InspectionsRequired

    Construction or work in Washington for which a permit is required under the applicable state energy-code provisions, including residential construction covered by WAC 51-11R-10500.

    • The requirement is for inspection under the applicable state energy code; the inspection is performed by the code official, designated agent, or approved agency.
    • The work must remain visible and accessible until approved.
    • The permit holder or authorized agent must notify the code official when work is ready and provide access and means for required inspections.
    • If work or an installation fails an initial inspection or test, corrections must be made and the work resubmitted.
    • The state building code is in effect in all counties and cities, subject to chapter 19.27 RCW exceptions and authorized local amendments.

    final inspection: required (The building may not be occupied until approved.)

    “The building shall have a final inspection and not be occupied until approved.”
    One more reviewed finding on this topic
    • Required — Washington residential construction for which a building permit is required, including work in Ferry County.
      “Construction or work for which a permit is required shall be subject to inspection by the code official or his or her designated agent, and such construction or work shall remain visible and able to be accessed for inspection purposes until approved.”
  • 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”
  • Tiny homesAllowed (with conditions)

    Occupancy and placement of tiny houses in Washington

    • A tiny house may be built on wheels and may not exceed 400 square feet including kitchen, bathroom, and sleeping/living area.
    • It must be built to the Washington State Building Code.
    • Approval depends on where it is built; local building-department requirements and permits apply to foundation, installation, and location.
    • A wheeled structure that is not a tiny house as described may instead be a recreational vehicle or park model.
    • A manufactured home, including a tiny manufactured home, requires consultation with the local building department regarding where it may be located.

    maximum area: <= 400 square feet

    “A tiny house is a dwelling that may be built on wheels and is no larger than 400 square feet, including a kitchen, bathroom, and sleeping/living area, and must be built to the Washington State Building Code. The approval process for a tiny house depends on where it's built.”
  • Manufactured homesLimited

    State statutory limits on county regulation of the placement or use of HUD-standard manufactured homes in Washington; site-specific occupancy remains subject to applicable local and state requirements.

    • The nondiscrimination and equal-siting rule applies to homes built to 42 U.S.C. Sec. 5401-5403 standards, as amended in 2000.
    • Except as provided in RCW 36.01.225(2), a county may require that a manufactured home be new.
    • Except as provided in RCW 36.01.225(2), a county may require a permanent foundation specified by the manufacturer and enclosure of the space from the bottom of the home to the ground with concrete or an approved concrete product, load bearing or decorative.
    • Except as provided in RCW 36.01.225(2), a county may require compliance with local design standards applicable to all other homes in the neighborhood.
    • Except as provided in RCW 36.01.225(2), a county may require thermal equivalence to the state energy code and all other requirements for a designated manufactured home under RCW 35.63.160.
    • A county may not restrict location in a manufactured/mobile home community legally in existence before June 12, 2008, based exclusively on the manufactured/mobile home's age or dimensions.
    • A county may not prohibit siting on an existing lot solely because existing separation and setback requirements regulating distance between homes are unmet.
    • A county may restrict location in a manufactured/mobile home community for other reasons, including failure to comply with fire, safety, other local ordinances, or state laws related to manufactured/mobile homes.
    • The statute does not override legally recorded covenants or deed restrictions of record and does not affect authority granted under chapter 43.22 RCW.

    community legal-existence date for age-or-dimensions protection: 2008-06-12 (Applies to manufactured/mobile home communities legally in existence before this date.)

    “A county may not adopt an ordinance that has the effect, directly or indirectly, of discriminating against consumers' choices in the placement or use of a home in such a manner that is not equally applicable to all homes. Homes built to 42 U.S.C. Sec. 5401-5403 standards (as amended in 2000) must be regulated for the purposes of siting in the same manner as site built homes, factory built homes, or homes built to any other state construction or local design standard.”
  • 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 wells and groundwater uses statewide under Washington's water-right permit exemption.

    • Domestic use is exempt up to 5,000 gallons per day.
    • Industrial use is exempt up to 5,000 gallons per day.
    • Lawn or garden irrigation is exempt only for a half-acre or less.
    • Stockwater is exempt.
    • Only one permit-exempt use of each type is allowed for any one project, regardless of project size.
    • Withdrawals from multiple wells for one project are aggregated toward the exemption limits.
    • Local governments and other laws and rules may impose additional requirements and limits.
    • Use in excess of the listed amounts, use for other purposes, or use from a surface-water source requires applying for and receiving a water-right permit.
    • Before drilling, a notice of intent must be submitted to Ecology 72 hours before drilling starts; the NOI is not itself a permit or approval to use water.
    • Permit-exempt uses remain subject to state water law, including possible restrictions relating to senior water rights and Streamflow Restoration Act requirements.

    domestic groundwater use exemption: <= 5000 gallons per day (Per project, with withdrawals from multiple wells aggregated.) · industrial groundwater use exemption: <= 5000 gallons per day (Per project, with withdrawals from multiple wells aggregated.) · lawn or garden irrigation exemption: <= 0.5 acre (For lawn or garden irrigation.) · well construction notice: 72 hours before drilling (Notice of intent is not a permit, certificate, or water-right application.)

    “The groundwater permit exemption allows for four small uses of groundwater without a water right permit: Domestic uses of up to 5,000 gallons per day Industrial uses of up to 5,000 gallons per day Irrigation of a lawn or garden, a half-acre or less in size Stockwater”
  • Mandatory utility hookupConditional

    Existing OSS failures and certain new developments statewide when public sewer service and applicable local requirements exist.

    • For an existing OSS failure within a sewer utility service area, the local health officer must require public-sewer connection if the sewer utility allows connection and adequate service is available within 200 feet measured along the usual or most feasible access route.
    • For an OSS repaired under Table X, connection is required when the local health officer deems it necessary to protect public health, adequate public sewer becomes available within 200 feet under the stated measurement rule, and the sewer utility allows connection.
    • Local boards of health may require new development to connect to protect public health.
    • Local boards of health shall require connection for new development or a development with a failing OSS when required by the comprehensive land use plan or development regulations.
    • The rule was filed March 1, 2024, and became effective April 1, 2025.

    public sewer availability distance: <= 200 feet (Measured from the existing building-drain/building-sewer connection, or where no building drain exists, from where the sewer line begins, along the usual or most feasible route of access.)

    “(b) Require connection to a public sewer system if the sewer utility allows the connection and has adequate public sewer services available within 200 feet from where the existing building drain connects to the existing building sewer, or where no building drain exists, within 200 feet from where the sewer line begins, as measured along the usual or most feasible route of access.”
  • 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

    Recreational vehicles in the context of Washington's manufactured/mobile-home community statutes

    • The rule defines an RV as temporary and transient living quarters.
    • The RV is not occupied as a primary residence.
    • The RV is not immobilized or permanently affixed to a manufactured/mobile home lot.
    • This claim does not establish general statewide siting permission on private land; local land-use and building rules may apply.
    “(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.”
    One more reviewed finding on this topic
    • Limited — Camping and temporary occupancy in Washington State Parks facilities
      “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.”
  • 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:”
    One more reviewed finding on this topic
    • General — Washington counties may plan and adopt zoning and other official controls for county land, including unincorporated areas, through their boards and planning agencies.
      “Such official controls may include, but are not limited to, ordinances establishing zoning, subdivision control, platting, and adoption of detailed maps.”
  • 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 — General certificate-of-occupancy requirements in Ferry County.
  • Local zoning — Municipal, township, or other subordinate local zoning within Ferry County.
  • Lot coverage — Lot coverage requirements in Ferry County
  • Camping on your land — Temporary camping on private land in Ferry County
  • Short-term rentals — Short-term rental regulation in Ferry County.

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 Ferry 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 ↗
  • Streamflow Restoration 3,000-gpd basins (RCW 90.94.020)partial of county

    New permit-exempt domestic wells capped at a maximum annual-average 3,000 gpd per connection; larger/new water-right permits generally unavailable due to instream-flow rules.

    Washington Legislature — RCW 90.94.020 ↗

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 Ferry County, Washington

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

Ferry County scores 64/100 on the Bolthole Index, a strong county profile. Its strengths: deep seclusion — about 3,794 people within a 30-minute drive and manageable long-term carry cost. Watch-outs: more administrative friction around building and land use.

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

Ferry County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Northeast Tri County 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 Ferry County?

Living in an RV on your own land in Ferry County is limited to specific cases: Recreational-vehicle park development reviewed through a Ferry County binding site plan. RV spaces must be separated from each other and from other structures by at least 10 feet. A central service building with necessary plumbing fixtures is required in RV parking areas providing spaces for dependent vehicles. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Ferry County, Washington?

Land in Ferry County runs about $929 per acre, based on the latest county data.

What is the water situation in Ferry County?

Ferry County gets about 20.5" of rain a year, with severe drought in roughly 8.4% of years. On water rights, Ferry County lies in the Streamflow Restoration 3,000-gpd basins (RCW 90.94.020) — New permit-exempt domestic wells capped at a maximum annual-average 3,000 gpd per connection; larger/new water-right permits generally unavailable due to instream-flow rules..

How remote is Ferry County?

A representative private-land location has about 3,794 people within a 30-minute drive and 80,584 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

How Ferry compares in Washington

Compare side-by-side →See all 39 Washington counties ranked →