State · WA

Washington building codes at a glance.

Washington State Energy Code (WSEC) and WAC 51 govern statewide. WUI overlays in eastern counties. Coverage in progress.

WA Washington IECC zones 4C, 5B, 6B · ASCE 7 design wind 85–110 mph

Adopted edition

Coverage in progress

Adoption model

Municipal adoption

Permits issued: Local

Coverage status

In progress

Parcel + edition library indexing in progress; per-jurisdiction lookups available.

Climate zones (IECC)

4C · 5B · 6B

Drives R-value, fenestration U-factor, and air-leakage envelope rules.

Design wind speed

85–110 mph

ASCE 7 Risk Category II, 3-second gust at 33 ft. Fastener spec follows.

Special zones

HVHZ (not applicable)
WUI (applicable)
FEMA SFHA overlays (present)

Compliance track

What's required to build here.

Local adoption — see jurisdiction.

County directory

All 39 counties in Washington.

Each county page shows the adopted edition, county-level amendments, and permit-office contact.

Working in Washington?

Pull an address-level code packet for any property. SkyCanvass resolves the parcel, looks up the jurisdiction's adopted edition + amendments, and emits a cited packet ready for permit submittal.

For state-vs-state comparisons see the state comparison view, or browse the state directory.

Pull a WA code packet.

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