PlainPermit

Do I need a permit for an HVAC or AC replacement in Seattle, WA?

Short answer: We could not confirm from an official source whether an HVAC or AC replacement needs a permit in Seattle, WA; check with Seattle Department of Construction and Inspections (SDCI); plumbing permits by Public Health – Seattle & King County before you start.

Last verified: · Confidence: low · Status: Unverified, confirm locally

Not legal advice. Always confirm with your local building department. Rules change, and your parcel's zoning, HOA, historic district, floodplain or utility work can change the answer. We show the official source and the date we last checked it so you can verify for yourself.
Unverified, confirm locally Confidence: low

Unverified: We did not find an official Seattle page on HVAC permits that we could quote.

Note: Unverified, confirm locally.

Cost

Fee not extracted; see SDCI fees. Unverified, confirm locally

Fee source: https://www.seattle.gov/sdci/permits/do-you-need-a-permit · All verified Seattle permit fees

Where to apply

Seattle Department of Construction and Inspections (Seattle Services Portal)

Permitting authority: Seattle Department of Construction and Inspections (SDCI); plumbing permits by Public Health – Seattle & King County. Rules differ in environmentally critical areas (steep slopes, wetlands, flood-prone areas). Plumbing and gas piping permits, including water heaters, are issued by Public Health – Seattle & King County, not SDCI. See also: how to apply for a building permit.

Official sources

Verified: · Status: unverified · Confidence: low

See something wrong or out of date? Report a correction (anonymous, no email needed).

Other projects in Seattle

HVAC / AC replacement permits in other cities

Compare hvac / ac replacement permit rules in all 25 cities · All Washington cities