Modesto, CA Fence Regulations: Material Restrictions (2026)

Modesto sets its fence material rule in the Development Standards chapter of the zoning code, Title 10, Chapter 4, section 10-4.406, titled Walls and Fences. Subsection (b)(3) is the material rule. It applies to a fence located along the front of a property zoned P-O (professional office), C-1, C-2, C-3, C-M, M-1, or M-2, and also to a P-D (planned development) parcel whose underlying zoning is commercial or industrial. A fence on one of those frontages has to do two things at once: it must satisfy the applicable front-yard and street-side-yard setback requirements, and it must be constructed of decorative wrought iron or other similar material as authorized by the Director. The wording leaves the call on what counts as a similar material to the Director, so chain link, solid wood, or plain panel fencing along a commercial or industrial frontage needs the Director's sign-off before it goes up. The last sentence of (b)(3) adds that any exceptions for existing development may be authorized by the Director, which is how an older site with a fence already in place is handled.

The material rule sits beside three other limits in the same subsection. Under (b)(1), no wall or fence can exceed eight (8) feet in height unless extra height is required as a condition of a zone, variance, use permit, development plan review, parcel map, subdivision map, noise mitigation, or similar action. Under (b)(2), no wall or fence can exceed forty-two (42) inches in the front and street side yard areas, and in the R-1 zone the street side setback required for fences taller than forty-two (42) inches is ten (10) feet. Under (b)(4), every wall and fence must respect the clear vision triangle in section 10-4.404: on corner lots in zones requiring a front setback, the triangle is measured twenty-five (25) feet along each of the front and street-side property lines from their intersection, and the area between three (3) and eight (8) feet in height measured from the top of the curb must stay clear.

Subsection (c) adds required walls. Where commercial, office, or industrial uses abut R-1, R-2, R-3, or residential P-D property, Table 4.4-1 calls for a solid decorative masonry wall: seven (7) feet minimum for uses in the P-O zone and eight (8) feet for uses in C-1, C-2, C-3, C-M, M-1, and M-2. A masonry wall that is visible from a public street has to be decorative, and a six-foot fence or wall required as a condition of new development needs a building permit and must meet structural standards approved by the Building Official. The section's current text reflects Ord. No. 3734-C.S., effective 10-7-21.