What can you legally build at your address?
Type your Seattle-area address. We'll pull your parcel, your zoning, your setbacks, your overlays — and tell you exactly what permits you'll need, what they'll cost, and how long they'll take. Every answer cited to the source.
Parcel-aware
We pull your actual lot polygon, zoning, setbacks, and overlays from the county GIS. No generic answers — your specific lot.
Citation everywhere
Every threshold, every fee, every requirement — click and see the verbatim quote from the city's own page with date and URL.
Application-ready output
When you decide to file, we generate a city-specific, pre-filled application packet so you walk in with the right paperwork.
Coverage
Every incorporated city + unincorporated county in the three-county Seattle metro.
King County
Including Seattle, Bellevue, Kirkland, Redmond, Sammamish, Renton, Kent, Auburn, Federal Way, Issaquah, Mercer Island, Shoreline, and 22 more cities + KC unincorporated.
Pierce County
Including Tacoma, Lakewood, Puyallup, University Place, Gig Harbor, Sumner, DuPont, Fife, Bonney Lake, and 11 more cities + Pierce unincorporated.
Snohomish County
Including Everett, Lynnwood, Edmonds, Bothell, Mill Creek, Mukilteo, Marysville, Monroe, Arlington, Lake Stevens, and 9 more cities + Snohomish unincorporated.
Compare across jurisdictions
Side-by-side tables of permit requirements, fees, and review timelines for kitchen, bathroom, ADU, deck, and 11 more project types — across every King, Pierce, and Snohomish County jurisdiction.
How we keep this current
Daily AI scan of the top-ranked Google results, classified against our verified data. Public leaderboard of which sources are stale, with the exact quote and source URL.
Common questions
How accurate is this?
For the data we publish: every fee, threshold, and timeline is sourced from the city or county directly, with the exact quote and URL on every page. We re-verify weekly. Where a city has not published clear guidance, we say so rather than guess.
What if I'm in unincorporated King/Pierce/Snohomish County?
Covered. Address-based lookup automatically routes to the county building department when your parcel is outside city limits.
Will this replace talking to the permit center?
For most homeowner projects (decks, kitchens, bathrooms, ADUs, fences, siding, windows, flooring, roofing, HVAC, electrical, plumbing) the answer here will match what the permit center tells you — and you can show up with the application packet pre-filled. For unusual scope (variances, conditional uses) you should still call the planner.
Do you send my address anywhere?
We geocode through Google Maps to identify the right county and we cache the parcel data we pull from public county GIS. We do not contact you, sell your information, or share with third parties.
Is this from Kolmo Construction?
Yes — Kolmo is a licensed Seattle-area general contractor. We built this because we live in the permit code every day, and the public web does a poor job of answering homeowner permit questions. If you decide you want a contractor for the project, we are one option.