Washington
Site Plans & Permit Drawings in Washington
Permit-ready site plans and drawings for properties in all 39 counties of Washington, drafted from your address to your local permit office’s rules. No site visit.
- 39 counties served
- No site visit
- Local rules checked
- Licensed PE partner
Quick answer
Do You Need a Site Plan for a Permit in Washington?
Yes, most building permits in Washington need a site plan: a scaled drawing of the lot, existing buildings and the new work, with distances to the property lines. In Washington, cities issue building permits inside their limits and the county issues them in unincorporated areas. Your address decides which office reviews your plans. We check that office’s requirements before quoting.
- Permits issued by
- City building departments; the county in unincorporated areas
- Building code
- Washington State Building Code, statewide
- Counties
- 39 in Washington, all served
- Largest
- King County (2.3M), Pierce County (929K), Snohomish County (845K), Spokane County (551K), Clark County (521K)
- Site visit
- None. We draft from parcel records, aerial imagery and your documents
Counties we serve
All 39 Washington Counties
We prepare drawings for properties in every county in Washington, and check the rules of the city or county that issues your permit.
A
- Adams County
- Asotin County
B
- Benton County
C
- Chelan County
- Clallam County
- Clark County
- Columbia County
- Cowlitz County
D
- Douglas County
F
- Ferry County
- Franklin County
G
- Garfield County
- Grant County
- Grays Harbor County
I
- Island County
J
- Jefferson County
K
- King County
- Kitsap County
- Kittitas County
- Klickitat County
L
- Lewis County
- Lincoln County
M
- Mason County
O
- Okanogan County
P
- Pacific County
- Pend Oreille County
- Pierce County
S
- San Juan County
- Skagit County
- Skamania County
- Snohomish County
- Spokane County
- Stevens County
T
- Thurston County
W
- Wahkiakum County
- Walla Walla County
- Whatcom County
- Whitman County
Y
- Yakima County
No match. We serve every county in Washington; check the spelling, or send us your address
Counties and population: U.S. Census Bureau, 2023 county population estimates.
Local conditions
What to Know About Permits in Washington
What changes the drawings in Washington. Exact numbers like setbacks and frost depth are set locally; we look them up for your address.
- Who reviews your permitIn Washington, cities issue building permits inside their limits and the county issues them in unincorporated areas. Your address decides which office reviews your plans.
- Flood zonesCheck your parcel on FEMA’s Flood Map Service Center. In a mapped flood zone, permit offices in Washington usually want the zone shown on the site plan, and some work needs an elevation certificate. FEMA flood map
- Earthquake designParts of Washington fall in higher seismic design categories, so foundations, retaining walls and additions can draw extra structural review.
- Snow loadsMountain and northern parts of Washington carry heavy ground snow loads, which drive roof design for garages, carports, sheds and covered porches. Large spans may need an engineer.
- Wildfire-risk areasHomes near wildland in Washington may be in wildfire-risk zones, where defensible space, vents and noncombustible materials can be checked.
Services
Drawings We Prepare in Washington
Every service, for any property in the state. Ordered together, the sheets are drawn to match.
- Site PlansLot lines, setbacks and new work
- Floor PlansExisting and proposed layouts
- Elevation DrawingsHeights, roof pitch, materials
- 3D RenderingsRealistic views for HOAs and buyers
- Subdivision PlansLot split layouts
- Engineer-Stamped PlansSealed where our PE partner is licensed
- Full Permit SetsEvery sheet, drawn to agree
- Permit CorrectionsRevisions after reviewer comments
Deck & PorchUsually, for attached decks or decks more than 30 inches above the ground.
FenceOften, especially for fences over 6 feet, front-yard fences or corner lots.
Pool & SpaYes, almost everywhere, for in-ground pools and most above-ground pools and spas.
Shed & OutbuildingOften for sheds over about 120 to 200 square feet, or with power.
ADUYes. An ADU is a dwelling, so it needs a full building permit.
Home AdditionYes, any addition that adds floor area needs a building permit.
Nearby states
Washington FAQ
Permits in Washington
Short answers to what people ask before ordering. Ask anything else in your quote request.
Get Price QuoteDo you serve every county in Washington?
Yes. We prepare drawings for properties in all 39 counties of Washington, from King County to Garfield County.
Who issues building permits in Washington?
In Washington, cities issue building permits inside their limits and the county issues them in unincorporated areas. Your address decides which office reviews your plans.
Does Washington have a statewide building code?
Yes: the Washington State Building Code. Cities and counties enforce it and may add local rules.
Do you need to visit my property in Washington?
No. We work from your address, county parcel records, aerial imagery and any survey, plans or photos you send.
Can you provide engineer-stamped plans in Washington?
Our licensed Professional Engineer partner seals eligible plans in the states where they’re licensed. We confirm coverage for your project before you pay.