Rohnert Park, CA Fence Regulations: Retaining Walls (2026)
Key Facts
- Right-of-way rule
- Walls next to streets must stay outside the right-of-way
- Permit trigger
- Any masonry wall needs a building permit, any height
- Height approval
- Walls over six feet need building department approval
- Fence-wall setback
- Fence set back 3 feet from an exposed retaining wall
- Commercial material
- Decorative masonry block required in commercial/industrial districts
Summary
A retaining wall along a public street must sit outside the right-of-way, and any masonry wall, retaining or otherwise, needs a city building permit no matter its height. Walls over six feet also need building department approval, and a fence built with an exposed retaining wall must be set back three feet from it under §§ 17.14.020 and 17.14.060.
Fences and walls greater than six feet in height shall require the approval of the building department. Masonry walls of any height shall also require a building permit. ... In cases where the fence is to be built in conjunction with a retaining wall, and the wall face is exposed to the street, the fence shall be set back a minimum of three feet from the retaining wall. ... All retaining walls that are adjacent to public streets shall be placed outside the public right-of-way. On commercial and industrial properties, such walls shall be constructed of decorative masonry block or an equivalent material approved by the planning and community development director. All masonry walls shall require a building permit.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 51 Update 2).
Full Breakdown
14 of the zoning code, the same chapter that sets fence and wall standards citywide. 060 requires every retaining wall adjacent to a public street to sit outside the public right-of-way, and on commercial and industrial parcels the wall face must be decorative masonry block or an equivalent material the planning and community development director approves. 020(A), any fence or wall taller than six feet needs building department approval, and any masonry wall, retaining walls included, needs a building permit regardless of height because masonry construction carries structural and drainage risk the city wants engineered plans for before work starts.
020 requires the fence itself to be set back a minimum of three feet from the retaining wall, keeping the sightline and pedestrian area clear along the sidewalk. 030(B): those walls must be architecturally treated on each side and the design approved by the planning and community development director, the planning commission, or the city council depending on the project. 133, which treat an uncorrected zoning violation as an infraction with escalating administrative penalties.
Violations & Fines
Building without a permit for a masonry or retaining wall, or building one inside the public right-of-way, is an infraction under Rohnert Park Municipal Code § 17.25.133. Each day the violation continues counts as a separate offense, and a fourth violation within twelve months can be charged as a misdemeanor under Chapter 1.16. The city can also pursue administrative citation penalties under Chapter 1.25 and require removal or correction of the wall.
Frequently Asked Questions
Do I need a permit to build a retaining wall in Rohnert Park?
Can I build a retaining wall inside the sidewalk right-of-way?
What happens if I combine a fence with a retaining wall?
What material does a commercial retaining wall need?
Sources & Official References
Other rules in Rohnert Park
California rules heatmap·Compare Rohnert Park to another location·View the California fence regulations overview
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Retaining Walls in Nearby Cities
How other cities in Sonoma County handle retaining walls.