Bolthole Index

Skamania County, Washington

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

49Index Score / 100
#28 of 39 in Washington

Unincorporated Skamania County, Washington requires building permits and applies county zoning12. Skamania County Environmental Health administers on-site sewage permits and inspections3. Qualifying owners may perform work without contractor registration, but the exemption does not waive building, electrical, plumbing or septic permits4.

At a glance

Building permit
Required in unincorporated Skamania County1
Zoning
Yes; district standards vary, and separate Gorge management-area rules apply56
Septic permit
Skamania County Environmental Health administers permits and inspections3
Owner-builder
A qualifying owner may avoid contractor registration, but not required permits4
R-10 lots
Minimum 10 acres, with district-specific setbacks and a 35-foot height limit789
ADU utilities
Provide proof of potable water, septic service and adequate existing-system capacity10
Short-term rental
A county license is required before offering or advertising a vacation rental11
Permit fees
Published fees include valuation-based building fees plus a 65% plan-review fee12

Who to call

Building permits

Skamania County Community Development, Building Division

Building-permit applications and building inspections

(509) 427-3925

170 NW Vancouver Ave, PO Box 1009, Stevenson, WA 98648

Online permits →

Zoning

Skamania County Community Development, Planning Division

Zoning, land-use applications, subdivisions and environmental review questions

(509) 427-3900

permitcenter@co.skamania.wa.us

170 NW Vancouver Ave, Stevenson, Washington

Septic permits

Skamania County Environmental Health, On-Site Sewage Program

On-site sewage site evaluations, permits and final inspections

509-427-3903

Online permits →

Contact details are copied from each office’s official page and were checked against it on October 10, 2026.

Off-grid gear

Going off-grid in Skamania 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 Skamania County, Washington?

Yes. Construction and improvements subject to Skamania County permitting require a building permit, with specific code exemptions still possible1. Washington's State Building Code applies in Skamania County and is enforced locally13. Starting covered construction without a permit can trigger double the normal permit fee plus enforcement costs14. Skamania County publishes valuation- or construction-cost-based building fees, adds plan review at 65% of the permit fee, and lists separate inspection and environmental-health charges12. The Building Division accepts applications through Cloudpermit, where applicants can track status, pay and schedule or cancel inspections15. A temporary growing structure used solely for horticultural production has a narrow state building-code exemption; that exception does not cover every barn, shop or dwelling16.

Who is the Skamania County building department, and how do you reach it?

Skamania County Community Development's Building Division handles building-permit applications and inspections15. The office is at 170 NW Vancouver Ave, with mail sent to PO Box 1009, Stevenson, WA 98648; call (509) 427-3925 or email building@skamaniacounty.gov15. Applicants can apply and manage inspections through Cloudpermit15. For zoning, land-use applications and subdivisions, contact the Planning Division at the same courthouse annex by calling (509) 427-3900 or emailing permitcenter@co.skamania.wa.us17. Skamania County processes short plats and subdivisions through land-development review, including septic and water review18. Published fee schedules cover building, inspection, environmental-health and on-site sewage work, but the final price depends on project valuation, construction cost and the applicable review charges12.

Does Skamania County have zoning?

Yes. Skamania County administers zoning and publishes classifications with district-specific use and development standards195. Unincorporated parcels are regulated under county zoning, while specified Columbia River Gorge General Management and Special Management Areas also have Title 22 controls26. In the R-10 district, the minimum lot size is 10 acres; access panhandles do not count toward lot area7. R-10 side and rear setbacks are 20 feet, while the front setback depends on the public-road centerline, private-road centerline or front property line; lots under 2 acres follow standard building-code setbacks8. Permitted R-10 uses generally have a 35-foot height limit above average site grade, subject to the cited code exception9. Skamania County's Building Department handout sets a floor for dwelling units rather than a total square footage: at least one habitable room needs 70 square feet of floor area, plus a toilet, sink, bath or shower, and a kitchen with a sink.20 Ask Planning to identify the parcel's exact district and Gorge status before designing, because the district figures above are not countywide standards17.

How do septic permits work in Skamania County?

Skamania County Environmental Health administers on-site sewage permits and related inspections3. Except for a minor repair, installing, repairing, modifying, connecting to or expanding an on-site sewage system requires a permit before construction21. A new build, expansion or repair without records needs a site evaluation, and the completed system must be inspected before cover22. Soil feasibility belongs near the start of due diligence because only about 4% of mapped county soils lack severe limitations for a conventional drain field23. Skamania County also reviews septic and water as part of short-plat or subdivision review18. Environmental Health lists separate on-site sewage fees, and unpermitted OSS work is charged double the required permit fee12. Call 509-427-3903 or email permitcenter@skamaniacounty.gov for the On-Site Sewage Program22.

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

Unincorporated Skamania County limits RV occupancy on private land to no more than 14 consecutive days and no more than 120 days in a calendar year, unless a temporary dwelling permit applies24. The Planning Division can issue a temporary dwelling permit for one RV or other temporary dwelling per parcel in only two cases: continuous care or assistance for a person living on the parcel, or an owner who is building or placing a dwelling to live in24. The permit lasts 1 year or until those facts end, whichever comes first, and the RV must keep a current vehicle license, meet setbacks and county health-department requirements, and not be rented25. A care-based permit can be renewed if the request is filed at least 30 days before expiration; a building-based permit can be renewed once25. Within the Title 22 Gorge area, an RV, qualifying tiny home on wheels or manufactured home may be occupied as a hardship dwelling only for necessary care of an infirm or aged family member, for up to 2 years, and it must be removed within 30 days after expiration or the end of the hardship26. A code-built Washington tiny house may contain no more than 400 square feet, but local foundation, installation, location and permit approval still apply27. Skamania County also requires a license before a short-term vacation rental is offered, advertised or rented11.

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

  1. Ask Planning for the parcel's zoning classification and whether Gorge or floodplain controls apply52817.
  2. Establish potable water and septic feasibility; a new build without prior soil records needs a site evaluation22.
  3. Obtain the on-site sewage permit before covered septic construction begins21.
  4. Secure county permission for an approach to a county road or written WSDOT permission for an approach on a state-highway right-of-way2930.
  5. Apply for the building permit through Cloudpermit and budget for the valuation-based permit fee, added plan review and applicable inspections1512.
  6. If acting as owner-builder, treat the contractor-registration exemption separately from every required trade and land-use permit4.
  7. Complete required inspections, including the septic inspection before cover3122.
  8. For an ADU, prove potable water and septic capacity, then record the covenant after final inspection and before the certificate of occupancy1032.

What should you check before buying land in Skamania County?

Start with usable ground rather than deeded acreage alone: about 18.8% of Skamania County land has a slope of 15% or less, about 92.3% is wooded and about 85.1% is federal land333435. Confirm the parcel's zoning classification and Gorge or floodplain status because district standards and overlays change what can be placed where5628. Test septic feasibility early because only about 4% of mapped soils lack severe limitations for a conventional drain field23. For a well, the owner or agent must notify the Washington Department of Ecology at least 72 hours before covered construction, reconstruction or decommissioning begins36. Verify legal road access and the correct approach permission2930. Carrying-cost benchmarks include an effective property-tax rate near 0.7%, a median annual tax bill near $3,380 and a typical annual home-insurance premium near $1,309373839.

Watch-outs

  • Do not plan to live in an RV on raw land: unincorporated Skamania County caps RV occupancy at 14 consecutive days and 120 days a year unless Planning issues a one-year temporary dwelling permit for care or for building your own home2425.
  • R-10's 10-acre minimum, setbacks and 35-foot height limit apply only in that district; get the parcel classification before using those figures789.
  • An ADU needs proof of potable water and septic capacity, and its recorded covenant is required after final inspection but before the certificate of occupancy1040.
  • Conventional septic suitability is limited: only about 4% of county soils are rated without severe drain-field limitations, so test soils before committing to a house site23.

Sources

  1. Building Division Fee Schedule, quoted and re-checked
  2. Ordinance No. 2020-08 amending Skamania County Code Title 21, quoted and re-checked
  3. Building Division Fee Schedule, quoted and re-checked
  4. RCW 18.27.090 Exemptions, quoted and re-checked
  5. Skamania County Code zoning chapters, quoted and re-checked
  6. Skamania County Code Title 22, quoted and re-checked
  7. Skamania County Code zoning chapters, quoted and re-checked
  8. Skamania County Code zoning chapters, quoted and re-checked
  9. Skamania County Code zoning chapters, quoted and re-checked
  10. Accessory Dwelling Units, quoted and re-checked
  11. STVR Fees and Requirements, quoted and re-checked
  12. Building Division Fee Schedule, quoted and re-checked
  13. RCW 19.27.050 Enforcement, quoted and re-checked
  14. Building Division Fee Schedule, quoted and re-checked
  15. Skamania County Community Development, Building Division (skamaniacounty.org)
  16. RCW 19.27.065 — Exemption—Temporary growing structures used for production of horticultural plants (Washington statewide rule), quoted and re-checked
  17. Skamania County Community Development, Planning Division (skamaniacounty.org)
  18. Building Division Fee Schedule, quoted and re-checked
  19. Skamania County Code zoning chapters, quoted and re-checked
  20. Minimum Dwelling Unit, quoted and re-checked
  21. WAC 246-272A-0200 Permit requirements, quoted and re-checked
  22. Skamania County Environmental Health, On-Site Sewage Program (skamaniacounty.org)
  23. 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
  24. Chapter 21.70 Supplementary Development and Use Standards, quoted and re-checked
  25. Chapter 21.70 Supplementary Development and Use Standards, quoted and re-checked
  26. Skamania County Code Title 22, quoted and re-checked
  27. Tiny Houses (Washington statewide rule), quoted and re-checked
  28. Planning & regulation — Washington State Department of Ecology (Washington statewide rule), quoted and re-checked
  29. RCW 36.75.130 — Approaches to county roads—Rules regarding construction—Penalty (Washington statewide rule), quoted and re-checked
  30. RCW 47.32.150 — Approach roads, other appurtenances—Permit (Washington statewide rule), quoted and re-checked
  31. WAC 246-272A-0260 Inspection, quoted and re-checked
  32. Accessory Dwelling Units, quoted and re-checked
  33. Share of land at 15% slope or less: Bolthole Index county data
  34. Wooded share of land: Bolthole Index county data
  35. Federal land share: Bolthole Index county data
  36. RCW 18.104.048 — Prior notice of well construction, reconstruction, or decommissioning, quoted and re-checked
  37. Effective property tax rate: Bolthole Index county data
  38. Median property tax bill: Bolthole Index county data
  39. Typical home insurance premium: Bolthole Index county data
  40. Accessory Dwelling Units, quoted and re-checked

Written October 10, 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, Skamania County requires a building permit for a home.

RuleSkamania CountyClark CountyCowlitz CountyLewis CountyKlickitat CountyWahkiakum CountyYakima County
Building permitRequiredRequiredRequiredRequiredRequiredRequiredRequired
County zoningYesYesYesYesYesNoYes
Septic permitsCounty Community DevelopmentCounty Public HealthCounty Health Dept.County Env. HealthCounty Health Dept.County Health & Human ServicesYakima Health District

County locator

Skamania County in Washington

49
County map
Skamania County highlighted among the Washington counties · colored by Index score

How Skamania County scores

Seclusion46100% ev.
Self-Sufficiency4591% ev.
Admin Boringness41100% ev.
Durability36100% ev.
Property Autonomy50100% ev.
Carry Cost39100% ev.

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

$568kTypical home
0.7%Property tax
$15,564Land / acre
92.6"Annual rain
4.9% of yrsSevere drought
0.7 / yr (+0.6)Mid-century 100°F days
24.6 daysMid-century dry spell
3.3" (+6.4%)Mid-century 1-day rain
1.37×Wildfire change factor
100%Forward climate coverage
$1,309Home insurance / yr
2.6% / yrInsurance growth
0.66%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
21,507Radius comparison (15 mi)
7.6People / sq mi
85.1%Federal land
18.8%Land at 15% slope or less
4%Soils rated "not limited" for septic (strict USDA rating)
9,562 acWorkable land screen
92.3%Wooded land
144.5 tonsBiomass / forest ac
45.8°FAvg temp

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Cities and towns in Skamania County

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

Not yet researched: North Bonneville

Answers from the rulebook for Skamania County

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

Skamania County rules

  • Building permitRequired

    Construction and improvements subject to Skamania County building permitting.

    • The county fee schedule states that construction started without a building permit is charged double the normal permit fee plus enforcement costs.
    • Specific statutory and code exemptions may apply.
    “Any construction started without the benefit of a building permit Double the normal permit fee together with all cost incurred for enforcement.”
    One more reviewed finding on this topic
    • Required — Construction and improvements subject to Skamania County building permitting.
      “without the benefit of a building permit”
  • Certificate of occupancyLimited

    Accessory dwelling units governed by the county ADU materials.

    • The covenant must be recorded after final inspection and before receiving a certificate of occupancy.
    • The source does not establish a certificate-of-occupancy requirement for every building type.
    “prior to receiving a certificate of occupancy”
    One more reviewed finding on this topic
    • Required — Accessory dwelling units regulated by Skamania County.
      “prior to receiving a certificate of occupancy.”
  • County-wide zoningPresent (with conditions)

    County zoning regulations in Skamania County, including county zoning classifications and use standards.

    • The cited county code PDF states it is current through Ordinance 2018-10, passed December 11, 2018.
    • This source does not establish rules administered by incorporated municipalities.
    “Chapter 21.40 RESIDENTIAL 10 ZONE CLASSIFICATION (R-10)”
  • Local zoningPresent (with conditions)

    County-administered zoning and development regulation in unincorporated Skamania County under Skamania County Code Title 21.

    • The cited ordinance concerns regulations for unincorporated Skamania County.
    • The ordinance amends Title 21, identified as the county zoning code.
    • The cited amendment includes development standards, operational requirements, permit requirements, and enforcement mechanisms for the regulated use.
    “AN ORDINANCE AMENDING SKAMANIA COUNTY CODE TITLE 21 – ZONING [...] vacation rentals in unincorporated Skamania County”
    One more reviewed finding on this topic
    • Present (with conditions) — County-administered zoning in unincorporated Skamania County.
      “ZONING GENERAL REGULATIONS (GMA AND SMA)”
  • Zoning districtsPublished (with conditions)

    Published Skamania County zoning classifications and district-specific standards.

    • The cited PDF is a county zoning-code document and states it is current through Ordinance 2018-10, passed December 11, 2018.
    • District-specific standards differ by classification.
    “Chapter 21.40 RESIDENTIAL 10 ZONE CLASSIFICATION (R-10) [...] Chapter 21.44 RURAL ESTATE ZONE CLASSIFICATION (RES-20)”
  • Minimum dwelling sizeSpecified

    Dwelling units subject to the Skamania County Building Department minimum dwelling-unit handout.

    • At least one habitable room must have 70 square feet of gross floor area.
    • The 70-square-foot requirement does not apply to kitchens.
    • Habitable rooms must be at least 7 feet in every horizontal dimension, except kitchens.
    • Areas under sloping ceilings below 5 feet or furred ceilings below 7 feet do not count toward required habitable area.
    • Each dwelling unit must have a water closet, lavatory, bathtub or shower, kitchen area, and kitchen sink.
    • Plumbing fixtures must connect to a sanitary sewer or approved private sewage-disposal system and an approved water supply.
    • The handout also states requirements for plumbing clearances, nonabsorbent tub and shower surfaces, garage separation, ventilation, Washington State Energy Code compliance, and heating.

    minimum gross floor area of one habitable room: >= 70 sq ft (Kitchens)

    “Every dwelling unit shall have at least one habitable room that shall not have less than 70 square feet of gross floor area. See IRC 301.1. Exception: Kitchens”
    One more reviewed finding on this topic
    • Specified — Dwelling units subject to the Skamania County Building Department's minimum dwelling-unit guidance.
      “Every dwelling unit shall have at least one habitable room that shall not have less than 70 square feet of gross floor area. [...] Exception: Kitchens”
  • Minimum lot sizeSpecified

    R-10 zoning classification.

    • Minimum lot size is ten acres.
    • The lot depth should not exceed the lot width by more than a ratio of four to one.
    • Access panhandles are excluded from the area calculation.

    minimum lot size: >= 10 acres (R-10 zone classification)

    “A. Lot Size. Minimum lot size shall be ten acres. The lot depth should not exceed the lot width by more than a ratio of four to one (four being the depth). Access panhandles shall not be taken into account as part of the area calculations relative to minimum lot size indicated above.”
  • SetbacksSpecified

    R-10 zoning classification.

    • Front setback is the greater of 50 feet from the public-road right-of-way centerline, 35 feet from a private-road centerline excluding private driveways, or 20 feet from the front property line.
    • Side and rear setbacks are at least 20 feet.
    • Lots under two acres must conform to standard building-code setback requirements.

    front setback: >= 50 feet from public-road right-of-way centerline (greater setback controls; private-road and front-property-line alternatives also apply) · side setback: >= 20 feet · rear setback: >= 20 feet (including accessory buildings)

    “1. Front Yard. No building or accessory building shall be constructed closer than fifty feet from the centerline of the public road right-of-way or thirty-five feet from the centerline of a private road (not including private driveways), or twenty feet from the front property line, whichever is greater. 2. Side Yard. On each side of the building or accessory building, a side yard shall be provided of not less than twenty feet. 3. Rear Yard. A rear yard shall be provided of not less than twenty feet, including accessory buildings.”
  • Building heightSpecified

    Permitted uses in the R-10 zoning classification.

    • The limit is measured above average site grade.
    • Section 21.70.050 is an exception.

    building height limit: <= 35 feet above average site grade (except as provided in Section 21.70.050)

    “1. Building height limit for permitted uses shall not exceed thirty-five feet above average site grade, with the exception of Section 21.70.050 of this title.”
  • Living in an RVLimited

    Occupancy of a recreational vehicle on a parcel in unincorporated Skamania County.

    • Skamania County Code Chapter 21.70 applies to all zone classifications except the unmapped classification unless otherwise noted in a particular zone classification.
    • An owner may not allow the recreational vehicle to be occupied for more than fourteen consecutive days or more than a total of one hundred twenty days during a calendar year.
    • A temporary dwelling permit may authorize up to one temporary dwelling on a parcel only under one of two circumstances: continuous care or assistance involving a person residing on the parcel, or the owner is building or placing a dwelling intended for the owner's occupancy.
    • The temporary-dwelling provisions are intended to address personal, but not financial, hardships.

    maximum consecutive occupancy: <= 14 days (unless a temporary dwelling permit is issued under one of the listed circumstances) · maximum annual occupancy: <= 120 days per calendar year (unless a temporary dwelling permit is issued under one of the listed circumstances) · temporary dwellings per parcel: <= 1 dwelling (temporary dwelling permit authorization)

    “more than fourteen consecutive days or more than a total of one hundred twenty days during a calendar year.”
    One more reviewed finding on this topic
    • Temporary only (with conditions) — Occupancy of a recreational vehicle as a temporary dwelling under a Skamania County temporary dwelling permit.
      “To apply for a temporary dwelling permit a parcel owner shall submit a completed application on a form supplied by the planning department. The application shall be accompanied by: [...] A nonrefundable fee as set by resolution of the board of county commissioners. [...] Every temporary dwelling authorized in accordance with this chapter shall meet the following minimum criteria: [...] A current vehicular license shall be maintained for the recreational vehicle used as a temporary dwelling. [...] The placement of the temporary dwelling must meet the Skamania County health department requirements. [...] A permit for a temporary dwelling shall be issued by the planning director after receipt of a completed application if he or she finds grounds exist for the application under subsection A of this section and the criteria in subsection C are met.”
  • Tiny homesLimited

    Tiny homes on wheels or other tiny-home units classified as recreational vehicles, and manufactured homes, within the area governed by Skamania County Code Title 22, including the National Scenic Area.

    • Occupancy requires a family hardship involving necessary care for an infirm or aged family member.
    • The hardship dwelling must use the existing dwelling's subsurface sewage disposal system if adequate, unless it can use an existing public sanitary sewer system.
    • The recreational vehicle or manufactured home must not require a permanent foundation and must be installed to facilitate removal when the permit expires.
    • The hardship dwelling must be removed within 30 days after permit expiration or cessation of the hardship, whichever comes first.
    • The placement must comply with all applicable laws.
    • The permit may be issued for two years, subject to annual compliance review and other approval conditions.
    • A new permit may be granted only upon a finding that the family hardship continues.
    • This claim is limited to recreational-vehicle/manufactured-home occupancy addressed by Title 22 and does not establish a countywide rule for every form of site-built or modular tiny home.

    maximum permit period: 2 years (subject to annual review) · removal deadline after expiration or cessation: 30 days (whichever occurs first)

    “A permit for the temporary placement and occupancy of a recreational vehicle or manufactured home may be granted if:”
  • Manufactured homesLimited

    Temporary placement and occupancy of a manufactured home as a hardship dwelling under Skamania County Code Title 22 in the Columbia River Gorge National Scenic Area management-area regulations.

    • A family hardship must exist relating to necessary care for an infirm or aged family member.
    • The hardship dwelling must use the existing dwelling's subsurface sewage disposal system if adequate, unless it can use an existing public sanitary sewer system.
    • The manufactured home must not require a permanent foundation and must be installed to facilitate removal when the permit expires.
    • The hardship dwelling must be removed within 30 days after permit expiration or cessation of the hardship, whichever comes first.
    • The hardship dwelling and placement must comply with all applicable laws.
    • The permit may be issued for two years, subject to annual compliance review and other approval conditions.
    • A new permit may be granted only if a continuing family hardship is found.

    permit term: 2 years (subject to annual review) · removal deadline after expiration or hardship cessation: 30 days (whichever occurs first)

    “A permit for the temporary placement and occupancy of a recreational vehicle or manufactured home may be granted if: A. A family hardship exists”
  • Who permits septicCounty (with conditions)

    County environmental-health administration of OSS permits and related inspections.

    • The county fee schedule identifies Environmental Health fees for OSS work.
    • State OSS rules govern the local health officer's permit and inspection duties.
    “Environmental Health Fee Schedule [...] Onsite Sewage Systems (OSS) [...] Design Plan Review and Permit”
  • Mandatory utility hookupConditional

    Accessory dwelling units in unincorporated Skamania County.

    • Applicants must provide proof of potable water and on-site septic and proof that existing systems have adequate capacity.
    • This claim is limited to ADU projects and does not establish a countywide utility-connection rule.
    “proof of potable water and on-site septic”
  • Subdividing landRegulated (with conditions)

    Short plats and subdivisions processed through Skamania County land-development review.

    • The county fee schedule states that short plat or subdivision review includes septic and water review.
    “Land Development Process (Short plat or Subdivision review includes septic and water)”
  • Short-term rentalsLimited

    Short-term vacation rentals in Skamania County.

    • A county license is required before renting, offering for rent, or advertising a STVR.
    • Licenses are annual and expire December 31.
    • Tier fees are $200, $300, or $500 depending on on-site presence, occupancy, and number of rentals.
    • Neighbor notice within 300 feet, dedicated parking, applicable building/plumbing/electrical/mechanical/fire/health codes, safety equipment, liability insurance, and tax compliance are required.
    • The county may revoke or condition licenses.

    Tier 1 license fee: 200 USD (owner or operator present on-site) · Tier 2 license fee: 300 USD (owner or operator not present on-site) · Tier 3 license fee: 500 USD (allowable occupancy of 15 or more persons or three or more unique rentals)

    “Licenses are required annually and expire December 31st of each year.”
    2 more reviewed findings on this topic
    • Limited — Short-term rental use of an ADU in Skamania County.
      “approved short-term vacation rental license”
    • Limited — Short-term rental use of an accessory dwelling unit.
      “approved short-term vacation rental license”
  • Permit feesPublished (with conditions)

    Skamania County building permit and related inspection fees.

    • Residential and commercial permit fees are based on valuation or square-foot construction cost.
    • Plan review is 65% of the established permit fee and is additional.
    • The fee schedule states that Skamania County Building will be guided by February 2020 ICC Building Valuation Data.
    • Additional listed fees and exceptions apply, including re-inspections and work started without a permit.

    plan review fee: 65 percent of permit fee (in addition to permit fee) · Washington State Building Code fee: 6.5 USD residential (commercial fee is 25 USD)

    “Residential and Commercial Building Permit Fees are determined by the building value or value of the improvement as calculated by either using the square footage of the project multiplied by the square foot construction cost, as compiled by the International Code Council (ICC) and published by the Building Safety Journal magazine annually, or the value of the improvement.”
    One more reviewed finding on this topic
    • Published — Skamania County building, inspection, environmental-health, and OSS permit fees listed in the county fee schedule.
      “The plan review fee will be 65% of the established permit fee [...] and is in addition to the permit fee”

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;”
    4 more reviewed findings on this topic
    • Available (with conditions) — Washington contractor-registration requirements for a person working on the person's own property or personal residence.
      “The registration provisions of this chapter do not apply to:”
    • Available (with conditions) — Washington contractor-registration requirements applicable to an owner working on the owner’s property or personal residence.
      “Any person working on his or her own property, whether occupied by him or her or not”
    • Available (with conditions) — Washington contractor-registration exemption for persons working on their own property or personal residence, including property in Skamania County.
      “(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;”
    • Conditional — Washington contractor-registration exemption for persons working on their own property or personal residence.
      “The registration provisions of this chapter do not apply to: [...] Any person working on his or her own 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
    • Adopted (with conditions) — Washington State Building Code as enforced in Skamania County.
      “The state building code required by this chapter shall be enforced by the counties and cities.”
    • Adopted — The Washington State Building Code applies in all Washington counties and cities, including residential construction in unincorporated county areas.
      “there shall be in effect in all counties and cities the state building code [...] The International Residential Code”
  • 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.”
  • 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:”
  • Septic permitRequired

    Installation, repair, modification, connection to, or expansion of an on-site sewage system statewide.

    • A permit is not required for a minor repair.
    • For covered activities other than a minor repair, the application and permit must be obtained before construction begins.
    • The application includes the drinking-water source, sewer-utility status, parcel size, sewage source, utilities, soil and site evaluation, site plan, and detailed OSS design.
    • The local health officer responds within 30 days, may require additional information, may deny or revoke a permit for just cause, and may impose additional requirements necessary to protect public health.
    • A permit expiration date may not exceed five years from issuance.
    • The cited rule revision was filed March 1, 2024, and became effective April 1, 2025.

    permit response time: <= 30 days (As required in RCW 70.05.074.) · permit expiration: <= 5 years (From the date of permit issuance.)

    “Except for a minor repair, [...] shall submit an application and obtain a permit from the local health officer prior to beginning construction.”
    2 more reviewed findings on this topic
    • Required — On-site sewage system installation, repair, modification, connection, or expansion rules applicable in Skamania County.
      “Except for a minor repair, a person proposing the installation, repair, modification, connection to, or expansion of an OSS”
    • Required — Installation, repair, modification, connection to, or expansion of an OSS in Skamania County under statewide Washington rules.
      “A permit is not required for a minor repair.”
  • Septic inspectionRequired

    On-site sewage systems for all activities requiring an OSS permit statewide.

    • The local health officer or an authorized inspector must coordinate access before inspection.
    • If the owner does not authorize access, the local health officer may use administrative search-warrant procedures under RCW 70A.105.030.
    • For a single-property OSS serving one dwelling unit on that property, an inspection and maintenance easement may not be required as a permit condition.
    • During final construction inspection, the local health officer or OSS designer must confirm the OSS meets the approved design.
    • Required inspections must include the minimum tank, lid/access/riser, OSS/reserve-area, component, record-drawing, and proprietary-product review items stated in WAC 246-272A-0260(5).
    “(1) For all activities requiring a permit, the local health officer shall inspect the OSS.”
    2 more reviewed findings on this topic
    • Required — On-site sewage system activities requiring a permit in Skamania County.
      “For all activities requiring a permit, the local health officer shall inspect the OSS.”
    • Required — OSS activities requiring a permit in Skamania County under statewide Washington rules.
      “For all activities requiring a permit, the local health officer shall inspect the OSS.”
  • 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”
    One more reviewed finding on this topic
  • 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.”
  • 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.”
  • Building in a floodplainRequired

    Development work on property located in a Washington floodplain.

    • The applicant must contact the local government to obtain the floodplain development permit.
    • Local governments manage floodplain development under the National Flood Insurance Program.
    • Some local governments impose standards higher than NFIP minimums, including regulation of areas larger than FEMA Flood Insurance Rate Maps show.
    • Washington counties and cities planning under the Growth Management Act must periodically review and update Critical Areas Ordinances addressing frequently flooded areas.
    “If you're planning to do any development work on a property located in a floodplain, contact your local government to obtain a floodplain development permit. Local governments are responsible for managing development in floodplains under the NFIP; however, some local governments have higher regulatory standards than the minimums of the NFIP, such as regulating a larger area than what is shown on Flood Insurance Rate Maps.”
  • Permit processPartial

    Washington building-permit applications statewide, with completion requirements defined by local ordinance.

    • A valid and fully complete application is considered under the building-permit and zoning or other land-use ordinances in effect on the application date.
    • For construction costing more than $5,000, the application must include the legal description or tax parcel number and available street address, owner contact information, prime-contractor information and registration number, and specified lender or payment-bond information.
    • If the subsection (2)(d) information is unavailable when submitted, the applicant must state that fact; the application is processed forthwith and the permit issued as if supplied, with the remaining information due when reasonably obtainable.
    • The cited section does not provide the complete local application process.

    construction project threshold: > 5000 USD (Minimum application information requirements apply.)

    “The requirements for a fully completed application shall be defined by local ordinance. A local government shall accept applications from a regional transit authority established under chapter 81.112 RCW regardless of whether the regional transit authority owns or has possession and use of the property subject to the application, so long as the application is otherwise complete. For any construction project costing more than $5,000 the application shall include, at a minimum:”
  • 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.

  • Lot coverage — Lot coverage limits in Skamania County.
  • Camping on your land — Temporary camping on private land in Skamania County.
  • Off-grid sanitation — Off-grid sanitation systems in Skamania 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.

Living off-grid in Skamania County, Washington

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

Skamania County scores 49/100 on the Bolthole Index, a solid county profile. Watch-outs: elevated current hazard exposure and higher long-term carry cost.

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

Skamania County generally requires a residential building permit, and it enforces county zoning. Onsite septic is permitted by Skamania County Community Development, Environmental Health On-Site Sewage Program. 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 Skamania County?

Living in an RV on your own land in Skamania County is limited to specific cases: Occupancy of a recreational vehicle on a parcel in unincorporated Skamania County. Skamania County Code Chapter 21.70 applies to all zone classifications except the unmapped classification unless otherwise noted in a particular zone classification. An owner may not allow the recreational vehicle to be occupied for more than fourteen consecutive days or more than a total of one hundred twenty days during a calendar year. A tiny home is allowed. Confirm with the county before relying on it.

How much does land cost in Skamania County, Washington?

Land in Skamania County runs about $15,564 per acre, based on the latest county data.

What is the water situation in Skamania County?

Skamania County gets about 92.6" of rain a year, with severe drought in roughly 4.9% of years.

How remote is Skamania County?

A typical private-land location has about 21,507 people within 15 miles and 3,410,124 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

How Skamania compares in Washington

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