How much does a building permit cost in unincorporated Whatcom County, WA?

The minimum permit fee is Deposit required at application submittal; deducted from total permit cost. Fees are calculated as: Based on valuation of proposed structure, proximity to critical areas, and number of proposed mechanical and plumbing fixtures. Plan check fee: Included in permit fee calculation.

How long does it take to get a building permit in unincorporated Whatcom County, WA?

Typical processing time is Varies; pre-application meeting is critical first step.

What work is exempt from building permits in unincorporated Whatcom County, WA?

The following work is generally exempt: One-story detached accessory structures under 200 sq ft (may still require zoning approval); Fences not over 7 feet high; Retaining walls not over 4 feet high; Decks/platforms not more than 30 inches above grade; Painting, tiling, carpeting, cabinets, and similar finish work; Prefabricated swimming pools entirely above ground. Note: Exempt from building permit does not mean exempt from land use/zoning compliance, critical areas review, or Health Department approval (septic/well). Contact PDS for specific exemption verification.

How do I schedule a building inspection in unincorporated Whatcom County, WA?

Inspections can be scheduled via: Online Permit Portal, Email requests to PDS, (360) 778-5900.

County Building Permits

Whatcom County, WA - 2026 Building Permit Guide

How to apply for a building permit in unincorporated Whatcom County, Washington. Permit authority, application steps, fees, and inspection requirements.

Washington Updated March 2026

Permit Authority

All unincorporated areas of Whatcom County not within incorporated cities.

Department: Whatcom County Planning and Development Services (PDS)
Address: 5280 Northwest Drive, Bellingham, WA 98226-9097
Phone: (360) 778-5900
Email: pds@co.whatcom.wa.us
Website: https://www.whatcomcounty.us/pds

Online Permit Portal

Open Whatcom County Online Permit Portal

Platform: Email/Online Portal • Account required: No • Submission: In-person only

Additional resources:

Application Process

Determine if pre-application screen meeting is required (required for commercial projects; recommended for residential).
Schedule pre-application meeting by calling (360) 778-5900 with Building Department supervisor.
Prepare building permit application, site plans, construction plans (scale drawings), valuation information, and critical areas documentation (if applicable).
Obtain SEPA checklist if required.
Submit application and plans via email to ePermits@co.whatcom.wa.us in unlocked, editable PDF format.
Schedule permit submittal appointment (Monday-Friday) by calling (360) 778-5900; have pre-application number and tax parcel number ready.
Pay building permit deposit at submittal.
County reviews plans and issues permit upon approval.
Schedule required inspections through online portal, email, or phone.

Typical processing time: Varies; pre-application meeting is critical first step

Source: Whatcom County Planning and Development Services (PDS)

General Requirements

A building permit is required for most construction in unincorporated Whatcom County.

Required Documents

Completed application forms
Site plans
Construction plans (drawn to scale)
Valuation information
Critical areas documentation (if applicable)
SEPA checklist (if required)

Permit validity: Contact PDS for permit validity terms.
Building code: International Building Code, International Residential Code, Washington State Energy Code, Whatcom County Code Title 15 (Building and Construction), Whatcom County Code Title 20 (Zoning)
Contractor requirements: Washington State L&I contractor registration required. Whatcom County business license may be required for certain work.

Fees

Minimum permit fee: Deposit required at application submittal; deducted from total permit cost
Plan check fee: Included in permit fee calculation
Permit fee formula: Based on valuation of proposed structure, proximity to critical areas, and number of proposed mechanical and plumbing fixtures
Reinspection fee: May apply for work not ready or corrections not made
Payment note: Building Permit Estimate Worksheet (XLS) available. Estimated fees for 2,000 sq ft/$450K home: ~$3,200 building permit + ~$2,000 plan review = ~$5,200 total. Additional fees may apply for shoreline permits, critical areas review, encroachment permits, current planning permits, fire permits, septic permits (Health Department), and well permits.

Fees change. Verify current amounts at the official fee schedule (effective 2026).

Work That Does NOT Require a Permit

One-story detached accessory structures under 200 sq ft (may still require zoning approval)
Fences not over 7 feet high
Retaining walls not over 4 feet high
Decks/platforms not more than 30 inches above grade
Painting, tiling, carpeting, cabinets, and similar finish work
Prefabricated swimming pools entirely above ground

Important: Exempt from building permit does not mean exempt from land use/zoning compliance, critical areas review, or Health Department approval (septic/well). Contact PDS for specific exemption verification.

Inspections

How to Schedule

Online Permit Portal (online)
Email requests to PDS (email)
(360) 778-5900 (phone)

Inspection hours: Monday-Friday during standard business hours

Typical inspection sequence: Required inspections: foundation/footing, underslab rough-in, framing (including shear walls), rough electrical, rough plumbing (testing required), rough mechanical, insulation and air sealing, duct testing (if forced air), final building, final electrical, final plumbing, final mechanical, blower door test (energy code compliance).

Additional Resources

Building code: International Building Code, International Residential Code, Washington State Energy Code, Whatcom County Code Title 15 (Building and Construction), Whatcom County Code Title 20 (Zoning)
Verify contractor license: WA L&I Contractor Lookup
Whatcom County Code Online
Whatcom County Health & Community Services
Whatcom County Public Works
Critical Areas Maps
License lookup guide: Washington Contractor License Requirements
Contract template: Washington Homeowner-Contractor Agreement
Washington hub: Washington Contractor License & Permit Hub

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Whatcom County Planning and Development Services (PDS) before applying.

Frequently Asked Questions

Whatcom County Building Permit FAQ

Do I need a building permit in unincorporated Whatcom County, WA?: A building permit is required for most construction in unincorporated Whatcom County.
How much does a building permit cost in unincorporated Whatcom County, WA?: The minimum permit fee is Deposit required at application submittal; deducted from total permit cost. Fees are calculated as: Based on valuation of proposed structure, proximity to critical areas, and number of proposed mechanical and plumbing fixtures. Plan check fee: Included in permit fee calculation.
How do I apply for a building permit in unincorporated Whatcom County, WA?: 1. Determine if pre-application screen meeting is required (required for commercial projects; recommended for residential). 2. Schedule pre-application meeting by calling (360) 778-5900 with Building Department supervisor. 3. Prepare building permit application, site plans, construction plans (scale drawings), valuation information, and critical areas documentation (if applicable). 4. Obtain SEPA checklist if required. 5. Submit application and plans via email to ePermits@co.whatcom.wa.us in unlocked, editable PDF format. 6. Schedule permit submittal appointment (Monday-Friday) by calling (360) 778-5900; have pre-application number and tax parcel number ready. 7. Pay building permit deposit at submittal. 8. County reviews plans and issues permit upon approval. 9. Schedule required inspections through online portal, email, or phone.
How long does it take to get a building permit in unincorporated Whatcom County, WA?: Typical processing time is Varies; pre-application meeting is critical first step.
What work is exempt from building permits in unincorporated Whatcom County, WA?: The following work is generally exempt: One-story detached accessory structures under 200 sq ft (may still require zoning approval); Fences not over 7 feet high; Retaining walls not over 4 feet high; Decks/platforms not more than 30 inches above grade; Painting, tiling, carpeting, cabinets, and similar finish work; Prefabricated swimming pools entirely above ground. Note: Exempt from building permit does not mean exempt from land use/zoning compliance, critical areas review, or Health Department approval (septic/well). Contact PDS for specific exemption verification.
How do I schedule a building inspection in unincorporated Whatcom County, WA?: Inspections can be scheduled via: Online Permit Portal, Email requests to PDS, (360) 778-5900.

Need help with your project?

Navigating permits in Unincorporated Whatcom County can be complicated.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

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