Fence Regulations in Brentwood, CA (2026)
5 verified fence regulations for Brentwood, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Height Limits
Brentwood fences are limited to 3.5 feet in front yards and 6 feet in side and rear yards. Fences over 6 feet require a building permit and may need a zoning variance. Corner lots have additional visibility triangle restrictions to protect sight lines at intersections.
Fences: Height Limits
Some RestrictionsNeighbor Fence Rules
Hedges and landscaping used as boundary barriers in Brentwood are subject to the same height limits as fences (3.5 ft front, 6 ft side/rear) when used to enclose a yard. Hedges must not encroach into the public right-of-way, block sidewalks, or obscure sight lines at intersections.
Fences: Hedge Rules
Some RestrictionsCal. Civ. Code § 841
841. (a) Adjoining landowners shall share equally in the responsibility for maintaining the boundaries and monuments between them. (b) (1) Adjoining landowners are presumed to share an equal benefit from any fence dividing their properties and, unless otherwise agreed to by the parties in a written agreement, shall be presumed to be equally responsible for the reasonable costs of construction, ...
Retaining Walls
Retaining walls in Brentwood up to 4 feet in height measured from the bottom of the footing to the top of the wall generally do not require a building permit if they do not support a surcharge (driveway, slope, or structure). Walls over 4 feet or supporting a surcharge require a building permit with engineered drawings.
Fences: Retaining Walls
Some RestrictionsPool Barriers
Brentwood pool barriers must comply with California Health & Safety Code §115920-115929 and the California Building Code. Requirements include a 60-inch minimum barrier, self-closing/self-latching gates, no climbable features, and at least two additional safety features for pools built after 2007.
Fences: Pool Fences
Heavy RestrictionsCalifornia Health and Safety Code § 115920 (Swimming Pool Safety Act)
Health and Safety Code - HSC DIVISION 104. ENVIRONMENTAL HEALTH [106500 - 119406] ( Division 104 added by Stats. 1995, Ch. 415, Sec. 6. ) PART 10. RECREATIONAL SAFETY [115725 - 116095] ( Part 10 added by Stats. 1995, Ch. 415, Sec. 6. ) CHAPTER 5. Safe Recreational Water Use [115825 - 116090.7] ( Chapter 5 added by Stats. 1995, Ch. 415, Sec. 6. ) ARTICLE 2.5. The Swimming Pool Safety Act [115920...
Material Restrictions
Brentwood permits a wide range of fence materials including wood, vinyl, wrought iron, masonry, and chain link, subject to zoning and HOA restrictions. Barbed wire, razor wire, and electrified fencing are prohibited in residential zones. Many HOAs in master-planned communities like Brentwood Hills and Trilogy impose material-specific requirements.
Fences: Materials
Few RestrictionsLooking for Contra Costa County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Brentwood city rules.
Fence Regulations in Contra Costa County →