Retaining Walls: Anza vs Temecula

Retaining walls over 3 feet measured from the bottom of the footing to the top of the wall require a building permit in Riverside County under California Building Code §105.2 (as adopted by Ordinance 460). Walls supporting a surcharge (such as a driveway or pool) require a permit at any height. Walls are drawn to seismic standards for Design Category D.

Retaining walls over 4 feet (measured from bottom of footing to top of wall) require a building permit and engineered plans in Temecula. Walls supporting surcharge loads (driveways, structures, slopes) require engineering at any height. Hillside lots in Wine Country foothills and Redhawk often need significant grading review.