Longview Building Department

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

Building Department

Longview Community Development

Address
1525 Broadway St, Longview, WA 98632
Hours
M-Th 7am-6pm

Last verified: 2026-04-19

Code environment

Climate Zone

CZ4

Western WA — moderate climate requirements.

Radon Zone

Zone 2

Moderate potential — mitigation recommended.

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Ready to check your compliance?

wsec.ai generates a complete R406 credit summary you can submit with your permit application to Longview Community Development.

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