Whatcom County, WA Building Safety: Building Permits (2026)
Key Facts
- Enforcing office
- Planning & Development Services Building Official
- Codes adopted
- 2021 IBC, IRC, IEBC (WCC 15.04.010)
- Standard permit life
- 2 years, one 1-year extension
- Mechanical/plumbing permit life
- 180 days, one extension
- Unpermitted work penalty
- Misdemeanor, up to $1,000/90 days
- Appeals
- Whatcom County hearing examiner, WCC 22.05.160
Summary
Whatcom County requires a building permit before almost any construction, alteration or demolition in the unincorporated area. WCC § 15.04.010 adopts the 2021 IBC and IRC for that purpose, and § 15.04.020 bars anyone from starting work until the Planning and Development Services Building Official approves the application and issues written notice of a valid permit.
Whatcom County hereby adopts the following codes...for the purpose of establishing rules and regulations for the construction, alteration, relocation, enlargement, replacement, repair, equipment, use and occupancy, location, maintenance, removal, and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures, including permits and penalties. ... §105.1.7 The applicant shall fill out, in full, the forms furnished for that purpose, and submit thereto the full amount of moneys that are required for fees as required in the respective codes. ... §105.1.8 No person, firm, partnership, corporation, or other entity shall perform work as provided herein until such time as they receive verification of approval of their application by the Building Official and have been given written notice of a valid permit.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4963078; v4 updated 2026-06-23; through 06-23-2026).
Full Breakdown
1). 020(C)(1), makes it unlawful to perform the work any earlier. 020(C)(2)). Commercial projects over $200,000 in construction value must also submit a coordinated master site plan before permit issuance, and any project can be required to pre-screen with the Building Official before formal application. 050(A)). Building without a valid permit lets the county deny further permits for the site and order the work restored to its prior condition. 160, not a separate board of appeals.
Violations & Fines
Working without an approved application and valid permit is a misdemeanor under IBC § 114/IRC § R113 as amended by WCC § 15.04.050(D), punishable by up to $1,000 and 90 days in jail, with each day of continued work a separate offense. The county may also issue a stop-work order; ignoring it is a gross misdemeanor carrying a mandatory minimum $500 fine (up to $1,000 or a year in jail) that a court cannot suspend.
Frequently Asked Questions
Do I need a permit to build a shed in Whatcom County?
How long is a Whatcom County building permit good for?
What happens if I build without a permit?
Sources & Official References
Other rules in Whatcom County
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