Retaining Walls: Fillmore vs Ventura

Do I need a permit for a retaining wall in Fillmore?

Retaining walls over 4 feet in height require a building permit with structural engineering plans. Walls supporting a surcharge (driveway, slope, or structure above) may need permits at any height.

Does a retaining wall need drainage in Fillmore?

Yes. All retaining walls should include drainage provisions such as weep holes or French drains to prevent hydrostatic pressure buildup behind the wall, which can cause failure.

Are there special requirements for hillside retaining walls in Fillmore?

Yes. Retaining walls in hillside areas north of town may require geotechnical investigation. Walls in the floodplain may need additional engineering for flood forces. Consult Community Development.

Do I need a permit for a retaining wall in Ventura?

Yes, if the wall exceeds 4 feet in height from the bottom of the footing to the top of the wall. Engineering plans by a licensed professional are required.

Do terraced retaining walls need permits?

Multiple terraced walls may each require permits if their combined retained height exceeds 4 feet. Consult Community Development at (805) 654-7869 for specific guidance.

What about retaining walls on hillside lots?

Hillside retaining walls may require geotechnical reports addressing soil stability and drainage in addition to standard engineering plans and building permits.