Fence Regulations in San Ramon, CA

If you live in San Ramon or are thinking about moving there, fence regulations are one of those things you probably won't think about until they affect you directly. San Ramon has 5 specific rules on the books covering different aspects of fence regulations, and some of them might surprise you.

Neighbor Fence Rules

Hedges in San Ramon are regulated similarly to fences for sight-line purposes. Front yard hedges must not exceed 3.5 feet within the front setback, and corner lot sight triangles apply. Hedges over 6 feet that block a neighbor's solar access or constitute a 'spite fence' under Civil Code §841.4 may be actionable.

Key details: Front Yard Height: Front yard hedges: max 3.5 ft. Sight Triangle: Corner sight triangle: max 3 ft within 15 ft of intersection. Spite Hedge: Spite hedges over 10 ft may violate CC §841.4. Neighbor Trim: Neighbor may trim encroachment to property line (no kill). Protected Trees: Heritage/protected trees may require removal permit.

If you are coming from a city with tighter rules, you will find San Ramon gives residents more flexibility on neighbor fence rules.

Fence Permit Requirements

Most San Ramon fences need no permit at all, but Municipal Code Section D3-4 requires a Building Permit for any fence or wall inside a mapped flood hazard area, and a Minor Exception or Variance before a fence or wall can rise above the height limits set in Table 3-1 or Table 3-2.

Key details: Flood zone fences: Building Permit required, Sec. D3-4.A.1. Standard height fences: No permit needed. Over-height fences: Minor Exception or Variance required. Lattice exception: 7 ft side/rear without Minor Use Permit. Architectural feature: Up to 2 ft above a 6 ft fence.

Building or raising a fence in a flood hazard area, or above the Table 3-1/3-2 limits, without the required Building Permit or Minor Exception/Variance is treated as unpermitted construction, an infraction under the City's general penalty section, Section A1-32, fined up to $100 for a first offense, $200 for a second, and $550 for each additional violation within a year; the fence remains a continuing daily violation under Section A1-33 until it is permitted or removed.

Height Limits

San Ramon caps residential fences at 3 feet in a front setback and 7 feet along side or rear lines under Table 3-1 of Municipal Code Section D3-4, and Section D3-6.F additionally limits any fence, sign, or landscaping within the corner traffic-visibility triangle to 30 inches.

Key details: Front setback fence: 3 ft maximum, Table 3-1. Side/rear fence: 7 ft (6 ft solid + 1 ft lattice). Non-residential side/rear: 8 ft maximum, Table 3-2. Corner visibility triangle: 25 ft legs at street intersections. Driveway visibility triangle: 15 ft legs along curb and driveway.

A fence built taller than Table 3-1's limits, or over 30 inches inside a required corner visibility triangle, without approved Minor Exception, Variance, or Engineering Services Director sign-off is unpermitted construction. It is charged as an infraction under Section A1-32, punishable by a fine of up to $100 for a first offense, $200 for a second, and $550 for each further violation within a year, and the City can order the fence lowered.

Retaining Walls

San Ramon requires any embankment over 48 inches high to be benched so no single retaining wall face exceeds 48 inches under Municipal Code Section D3-4.D.3, and a retaining wall under 48 inches is exempt from the zone's setback requirements under Section D3-10.B.2.e.

Key details: Bench trigger height: Over 48 inches, Sec. D3-4.D.3. Max height per wall face: 48 inches above finished grade. Minimum bench depth: 24 inches. Setback exemption: Walls under 48 in, Sec. D3-10.B.2.e.

Constructing a retaining wall or embankment face taller than 48 inches without the required benching, or without the structural review a taller wall triggers, is treated as unpermitted work and charged as an infraction under Section A1-32, with fines of up to $100 for a first offense, $200 for a second, and $550 for each later violation within a year; the City can also require the wall be modified to meet the bench spacing.

Material Restrictions

San Ramon bans barbed wire, electrified fencing, razor or concertina wire, and chain link in a front or street-side yard in every zone under Municipal Code Section D3-4.E, unless the Zoning Administrator approves an exception for animal control or a documented security need.

Key details: Barbed/electrified fence: Prohibited in all zones. Razor/concertina wire: Prohibited on or apart from a fence. Chain link: Barred in front/street side yard only. Exception: Zoning Administrator approval for animal control/security. Open space exemption: Open wire fencing allowed abutting open space.

Installing barbed wire, an electrified fence, razor or concertina wire, or chain link in a front or street-side yard without Zoning Administrator approval violates Section D3-4.E and is enforced as an infraction under the City's general penalty section, Section A1-32: up to $100 for a first offense, $200 for a second, and $550 for each additional violation within a year, with the fence remaining a continuing daily violation under Section A1-33 until it is corrected.

Compared to other cities, San Ramon takes a harder line on material restrictions. The enforcement and penalty structure reflects that.

The Bottom Line

San Ramon's fence regulations rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming San Ramon is broadly strict or permissive.

These rules come from San Ramon's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.