Sunnyside Building Department

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

Building Department

Sunnyside Building Division

Phone
(509) 837-4229
Address
818 E Edison Ave, Sunnyside, WA 98944
Hours
M-F 8am-5pm
Website
https://www.sunnyside-wa.gov/101/Building-Division

Last verified: 2026-04-19

Code environment

Climate Zone

CZ5

Eastern WA — stricter insulation and air sealing minimums apply.

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 Sunnyside Building Division.

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