Clark County Washington Energy Code Compliance
WSEC-R 2021 compliance information for builders and contractors in Clark County.
Code environment
Climate Zone
CZ4
Western Washington — west of the Cascade crest, marine climate.
Wall min R-20 cavity + R-5 continuous, or R-13 cavity + R-10 continuous · Ceiling min R-60 · Window max U-0.30 · WAC 51-11R-40213, Table R402.1.3
Radon Zone
Zone 1
High radon potential — passive sub-slab depressurization system required under WAC 51-51-60101 (Appendix AF).
Learn more →County building department
The county building department handles permits for unincorporated areas. Cities within the county may have their own permit offices — see below.
Authority Having Jurisdiction (AHJ)
Clark County Building Safety
- Phone
- (360) 397-2470
- Address
- 1300 Franklin St, Vancouver, WA 98660
- Hours
- M-F 8am-4pm
Last verified: 2026-04-19
Submittal notes
- Clark County: Clark County: The 2021 WSEC Plan Sheet must be printed on 11×17 paper — CC LMS automated intake checks paper size and rejects letter-size submissions.
Cities with their own building department
These cities have an independent permit office. If your project is inside city limits, contact the city — not the county — for permits.
Battle Ground
Battle Ground Community Development
- Phone
- (360) 342-5083
- Address
- 109 SW 1st St, Battle Ground, WA 98604
- Hours
- M-F 8am-5pm
Last verified: 2026-04-19
Camas
Camas Building Division
- Phone
- (360) 817-1568
- Address
- 616 NE 4th Ave, Camas, WA 98607
- Hours
- M-F 8am-5pm
Last verified: 2026-04-19
La Center
La Center Building Inspector
- Phone
- (360) 263-7664
- Address
- 214 E 4th St, La Center, WA 98629
- Hours
- M-F 8am-5pm
- Website
- https://ci.lacenter.wa.us/
Last verified: 2026-04-19
Ridgefield
Ridgefield Building Division
- Phone
- (360) 857-5012
- Address
- 230 Pioneer St, Ridgefield, WA 98642
- Hours
- M-F 8am-5pm
Last verified: 2026-04-19
Vancouver
Vancouver Community and Economic Development
- Phone
- (360) 487-7800
- Address
- 415 W 6th St, Vancouver, WA 98660
- Hours
- M-F 8am-5pm
- Notes
- uses ePlans portal
Last verified: 2026-04-19
Washougal
Washougal Building Division
- Phone
- (360) 835-8501
- Address
- 1701 C St, Washougal, WA 98671
- Hours
- M-F 8am-5pm
Last verified: 2026-04-19
Not listed? Your project is in unincorporated Clark County — use the county building department above.
Ready to check your compliance?
Answer a few questions about your project and get a complete R406 credit summary you can submit with your permit application.
Start your WSEC compliance check →Typical project costs in Clark County
Coming soon as we gather receipt data from local contractors.
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