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When a permit is required
Permit triggers and exempt work for Clark County
A building permit is required for all construction work in unincorporated Clark County.
- Exempt One-story detached accessory buildings 200 sq ft or less (no plumbing/electrical/mechanical)
- Exempt Minor repairs
- Exempt Certain agricultural structures
Note: Contact Permit Center to verify specific exemptions. Tiny homes/ADUs may be permitted as primary dwelling or guest house; hardship affidavit available for circumstantial permits (annual renewal required).
- Site plan
- Construction drawings
- Engineering calculations
- As required by the permit portal
- Building code
- 2021 Washington State Building Code (IBC with WA amendments), 2021 Washington State Residential Code, Washington State Energy Code. Adopted codes enforced for unincorporated areas.
- Contractor requirements
- Washington State L&I registration required. Electrical permits through WA State L&I. If property is within city limits of any incorporated city, that city's permits are required instead of county permits.
Application process
Typical processing: Simple permits: 1-4 weeks; Major projects: 4-12 weeks
- 01 Verify jurisdiction using Clark County GIS Property Information Tool. Visit Clark County Maps Online, search by address or parcel number, click 'Property Information Center', review jurisdiction field.
- 02 Submit application through Clark County Permit Portal.
- 03 Create account.
- 04 Upload documents (site plan, construction drawings, calculations).
- 05 Pay fees.
- 06 Monitor status online.
- 07 Schedule inspections when permit issued.
Typical processing time: Simple permits: 1-4 weeks; Major projects: 4-12 weeks
Source: Clark County Community Development - Permit Center ↗
Fee schedule
Clark County building permit fees
Fee schedule available through Permit Center
Required inspections
Scheduling and sequence
- Permit portal (online)
- 564-397-4078 (phone)
Typical sequence: Required inspections: Foundation, Framing, Plumbing, Mechanical, Final inspection
Frequently asked
Common questions about unincorporated Clark County permits
01 Do I need a building permit in unincorporated Clark County, WA? ▸
02 How much does a building permit cost in unincorporated Clark County, WA? ▸
03 How do I apply for a building permit in unincorporated Clark County, WA? ▸
04 How long does it take to get a building permit in unincorporated Clark County, WA? ▸
05 What work is exempt from building permits in unincorporated Clark County, WA? ▸
06 How do I schedule a building inspection in unincorporated Clark County, WA? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Clark County Community Development - Permit Center before applying. Jaspector is not legal advice.