Sutter County, CA Fence Regulations: Retaining Walls (2026)

Retaining walls in unincorporated Sutter County are regulated through the County's adopted building code (Chapter 1300 of the Code of Ordinances, which adopts the California Building Code) rather than a unique county retaining-wall ordinance. Under the California Building Code as adopted statewide, a retaining wall is exempt from a building permit only when it is not over 4 feet in height measured from the bottom of the footing to the top of the wall AND it does not support a surcharge. A 'surcharge' is any additional load above the soil being retained - such as a sloped backfill, a driveway, a structure, a pool, or a second wall above. Walls taller than 4 feet, or any wall (even a shorter one) carrying a surcharge, require a building permit and typically engineered plans submitted to the Sutter County Building & Construction division. Even when a wall is exempt from a building permit, it must still comply with applicable zoning setback, drainage, and sight-distance requirements in the Zoning Code (Chapter 1500), and combination retaining-wall-plus-fence structures must satisfy both the retaining-wall building standards and the fence height standards in Table 1500-06-2. Always confirm permit thresholds and engineering requirements with County Building staff before construction, particularly near property lines, slopes, or drainage courses.