Bellingham Building Department

WSEC-R 2021 energy code compliance resources for builders and contractors in Bellingham, Whatcom County.

Building Department

Bellingham Permit Center

Address
210 Lottie St, Bellingham, WA 98225
Hours
M-F 8:30am-4pm
Notes
first-class city

Last verified: 2026-04-19

Code environment

Climate Zone

CZ4

Western WA — moderate climate requirements.

Radon Zone

Zone 2

Moderate potential — mitigation recommended.

Learn more →

Ready to check your compliance?

wsec.ai generates a complete R406 credit summary you can submit with your permit application to Bellingham Permit Center.

Start your WSEC compliance check →