Richland Building Department

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

Building Department

Richland Building Division

Phone: (509) 942-7762
Address: 625 Swift Blvd, Richland, WA 99352
Hours: M-F 8am-5pm
Email: krex@ci.richland.wa.us
Website: https://www.ci.richland.wa.us/departments/development-services/building

Last verified: 2026-04-19

These apply at Benton County County level — verify city-specific items directly with Richland Building Division.

Kennewick: Kennewick uses a standardized Residential Plan Review Checklist linked to pre-applications — request it during pre-application to avoid correction notices.

Code environment

Climate Zone

CZ5

Eastern WA — stricter insulation and air sealing minimums apply.

Radon Zone

Zone 2

Moderate potential — mitigation recommended.

Ready to check your compliance?

wsec.ai generates a complete R406 credit summary you can submit with your permit application to Richland Building Division.