Gardena, CA Fence Regulations: Retaining Walls (2026)
Key Facts
- Permit-exempt height
- 3 feet or less
- Measured from
- bottom of footing to top of wall
- Exception
- surcharge or Class I/II/IIIA liquids voids exemption
- Unpermitted work fee
- quadrupled per § 15.06.040(B)
- Appeal deadline
- 10 days to Building Appeals Board
- Enforcing agency
- Community Development Dept., Building Division
Summary
In the City of Gardena, a retaining wall up to 3 feet tall, measured from the bottom of the footing to the top of the wall, is exempt from a building permit under the city's amendment to the California Building Code. Any taller wall, or one holding back a surcharge or Class I, II or IIIA liquids, needs a permit reviewed by the Building Official before construction begins.
§ 15.06.020. Work exempt from permits. Section 105.2, items 2 and 4 are hereby amended to read as follows: ... ... 4. Retaining walls that are not over 3 feet in height measured from the bottom of the footing to the top of the wall, unless supporting a surcharge or impounding Class I, II or IIIA liquids.
Full Breakdown
Gardena Municipal Code § 15.06.020 amends California Building Code Section 105.2 so that item 4, retaining walls not over 3 feet in height measured from the bottom of the footing to the top of the wall, is exempt from permit unless the wall supports a surcharge or impounds Class I, II or IIIA liquids. The city repeats the identical exemption for one- and two-family construction at § 15.10.020, amending California Residential Code Section R105.2, so the 3-foot threshold applies citywide regardless of building type. A wall that exceeds 3 feet, or a shorter wall carrying a surcharge load or hazardous liquid, must go through the Community Development Department's Building Division for a permit and plan review.
Under § 15.06.040, the plan review fee equals 100 percent of the building permit fee, and if work begins before the permit is issued the fee is quadrupled under § 15.06.040(B). A property owner who disputes the Building Official's determination on whether a wall needs a permit may appeal to the Building Appeals Board under § 15.02.060, but the written appeal and fee must be filed with the chief building official within 10 days of receiving notice, and the Board must schedule a hearing within 45 days. The Board's decision is final, and judicial review must be sought within 90 days under California Code of Civil Procedure Section 1094.6.
Violations & Fines
Building without a required permit is a code violation under § 15.06.050 (Section 114 of the CBC). Building the wall without first obtaining the permit quadruples the plan review and permit fee under § 15.06.040(B). Beyond the fee, an unpermitted retaining wall violation is enforceable as a misdemeanor or, at the city attorney's discretion, an infraction under § 1.16.010, carrying fines up to $100 for a first building-and-safety-code infraction, $500 for a second within a year, and $1,000 for each additional violation.
Frequently Asked Questions
Do I need a permit to build a retaining wall in Gardena?
What happens if I build a retaining wall without a required permit?
Can I appeal a Building Official's decision about my retaining wall?
Does the retaining wall rule differ for houses versus commercial buildings?
Sources & Official References
Other rules in Gardena
California rules heatmap·Compare Gardena to another location·View the California fence regulations overview
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