Skagit County, WA Building Safety: Building Permits (2026)
Key Facts
- Codes adopted
- 2021 IBC and IRC, SCC 15.04.020
- Permit-free threshold
- One-story, 200 sq ft or less, detached
- Conditions
- No sleeping use, meets SCC 14.28 setbacks
- Permit expiration
- 3 years from issuance, one 6-month extension
- Appeals
- SCC 14.06.150 process, no separate Board of Appeals
Summary
Skagit County adopts the 2021 International Residential and Building Codes for unincorporated areas under SCC 15.04.020, and its own amendment to IRC Section R105.2 sets the only permit-free threshold: a detached, one-story building of 200 square feet or less that meets setback, flood, critical-area and use conditions in SCC 15.04.030(1)(b).
15.04.020 International and Uniform Codes adopted. The following International and Uniform Codes are hereby adopted subject to any limitation, modification, or amendment provided in RCW Chapter 19.27, Title 51 WAC, and as hereinafter set forth in this Chapter: ... (2) International Residential Code for One- and Two-Family Dwellings, 2021 Edition, except Chapters 11 and 25 through 43, published by the International Code Council, together with supplements and amendments thereto; International Residential Code Appendices F, Q, T, U, V, Y, and Z. ... (b) IRC Section R105.2, Work Exempt From Permit, Building exception 1, is amended to read: ... 1. One story detached buildings 200 square feet or smaller, if all of the following are true: ... (A) The building is not used for sleeping purposes; ... (B) The building meets the setback requirements of Skagit County Code (SCC) Division 1 Zoning and Land Uses and the specific requirements of SCC 14.28;
Full Breakdown
020. Those adopted codes govern permitting for every structure in unincorporated Skagit County, and the county narrows the routine model-code exemption for small detached buildings rather than widening it. 28 and Division 1 zoning, it sits outside a Special Hazard Flood Area absent an approved flood permit and outside a mapped floodway, it avoids critical areas or their buffers absent completed critical-areas review, and it carries no plumbing or heating unless separately approved. 030(2)(c) applies the identical 200-square-foot, same-conditions test to the IBC's parallel commercial exemption. 030(1)(d) a permit that issues expires in three years unless renewed or extended.
Violations & Fines
Building without a required permit is enforced through Skagit County's Building Official under Title 15 and the SCC 14.06 review process. SCC 15.04.021 routes every appeal of a Building Official or Fire Code Official decision through the SCC 14.06.150 procedure rather than a separate board of appeals, since the county did not adopt the model codes' Board of Appeals provisions.
Frequently Asked Questions
What size shed can I build in unincorporated Skagit County without a permit?
What building code does Skagit County use for unincorporated permits?
How long is a Skagit County building permit good for?
Sources & Official References
Other rules in Skagit County
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