Chelan County, WA Fence Regulations: Retaining Walls (2026)
Key Facts
- Permit-exempt height
- 4 feet or less
- Height measured
- footing bottom to wall top
- Surcharge walls
- need permit at any height
- Adopted from
- IRC R105.2, county-amended
- Enforcing agency
- Chelan County Community Development
- First-offense fine
- $750.00 (Title 16)
Summary
In unincorporated Chelan County, a retaining wall needs no county building permit if it measures 4 feet or less from the bottom of its footing to the top of the wall and does not support a surcharge. A taller wall, or one carrying an added load such as a driveway or slope above it, needs a permit reviewed by Community Development before construction starts.
R105.2 Work exempt from permit. ... Permits shall not be required for the following. Exemption from permit requirements of this code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of this jurisdiction. ... 3. Retaining walls that are not over 4 feet (1219 mm) in height measured from the bottom of the footing to the top of the wall, unless supporting a surcharge.
Full Breakdown
2, the work-exempt-from-permit list the Board of County Commissioners adopted for the unincorporated county. " The county measures from the footing, not from finished grade, so a wall dug partway into a slope is measured the same way a freestanding wall is. A surcharge wall, one carrying an additional load behind it such as a driveway, parking area, structure or steep backfill, loses the exemption no matter how short it is and needs a permit and Community Development review regardless of height. 810, requires any retaining wall of 4 feet or more, or any wall with a surcharge, on a public road to be designed by a Washington-licensed civil engineer and approved by the county engineer under AASHTO standards; that provision governs road construction rather than an ordinary yard wall. 010.
Violations & Fines
Building a retaining wall taller than 4 feet, or any surcharge wall, without a county permit is treated as a Title 3 building violation under Chelan County's enforcement title. The administrator can issue a notice and order or stop work order; failing to correct the violation carries a civil penalty of $750.00 for a first offense and $1,500 for a repeat violation under Chelan County Code § 16.16.010, plus a lien against the property if unpaid.
Frequently Asked Questions
Do I need a permit to build a retaining wall on my property in unincorporated Chelan County?
How is retaining wall height measured under the county code?
What is a surcharge wall and why does it matter?
Does a different rule apply to retaining walls along county roads?
Sources & Official References
Other rules in Chelan County
Compare Chelan County to another location·View the Washington fence regulations overview
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