Ventura, CA Fence Regulations: Retaining Walls (2026)
Key Facts
- Permit required
- Separate Building and Safety permit, always
- Grading exemption (outside HMP)
- Under 6 ft, no surcharge
- Grading exemption (inside HMP)
- Under 3 ft, no surcharge
- Appeal deadline
- 10 calendar days to public works director
- Definition source
- San Buenaventura Municipal Code § 12.210.020
Summary
In the City of Ventura, retaining walls need their own permit from Building and Safety in addition to any grading permit, under San Buenaventura Municipal Code Section 12.215.010. Walls under six feet with no surcharge are exempt from the separate grading permit outside the Hillside Management Program area; inside it, the exemption drops to three feet.
“Retaining wall” shall mean a wall type structure that is built to retain a vertical or near vertical face mass of earth. The earth behind the wall may be a natural embankment or backfill material placed adjacent to the retaining wall. ... A. ... Generally. No person shall commence or perform any grading, and no person shall import or export any earth materials to or from any site, without first having obtained a permit therefor from the city engineer. A separate permit will be required for each site. Retaining walls require a separate permit from building and safety. ... 6. ... Excavations below finished grade for retaining walls less than six feet in height with no surcharge in areas not within the boundaries of the HMP. 7. Excavations below finished grade for retaining walls less than three feet in height with no surcharge in areas within the boundaries of the HMP.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 2026-008, passed May 12, 2026).
Full Breakdown
010(A) of the Grading Regulations division states plainly that, separate from any grading permit, retaining walls require a separate permit from building and safety before construction begins; a grading permit for the underlying excavation is also required from the city engineer unless one of the chapter's listed exceptions applies. 020 defines a retaining wall as a wall type structure built to retain a vertical or near-vertical face mass of earth, whether the earth behind it is a natural embankment or backfill material. 010(C). The tighter HMP threshold reflects the code's general policy that grading on hillside-area property must conform to the HMP's own requirements, with the city engineer and community development director able to grant exceptions only where they find no danger to life, limb, health, property or public welfare. 030, and the director's decision is final with no further appeal to the city council.
Violations & Fines
Building a retaining wall in Ventura without the separate Building and Safety permit Section 12.215.010(A) requires, or without the grading permit for walls that exceed the six-foot (or three-foot, inside the HMP boundary) no-permit threshold, is grading performed without required authorization; the city engineer can deny or condition a permit under Section 12.215.060, and any resulting decision can be appealed to the public works director within 10 calendar days under Section 12.210.030.
Frequently Asked Questions
Do I need a permit to build a retaining wall in Ventura?
How tall can my retaining wall be without needing a grading permit?
What if I disagree with the city engineer's decision on my retaining wall permit?
Sources & Official References
Other rules in Ventura
California rules heatmap·Compare Ventura to another location·View the California fence regulations overview
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Retaining Walls in Nearby Cities
How other cities in Ventura County handle retaining walls.