Kennewick Building Department
WSEC-R 2021 energy code compliance resources for builders and contractors in Kennewick, Benton County.
Building Department
Kennewick Building Division
- Phone
- (509) 585-4387
- Address
- 210 W 6th Ave, Kennewick, WA 99336
- Hours
- M-F 8:30am-4:30pm
Last verified: 2026-04-19
Submittal notes
These apply at Benton County County level — verify city-specific items directly with Kennewick 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.
Ready to check your compliance?
wsec.ai generates a complete R406 credit summary you can submit with your permit application to Kennewick Building Division.
Start your WSEC compliance check →