Alameda County, CA Fence Regulations: Fence Permit Requirements (2026)
Key Facts
- Masonry fence limit
- 5 ft 9 in, no permit
- Light-material fence limit
- 7 feet, no permit
- Pool barriers
- Excluded from this exemption
- Section
- Alameda County Code § 15.08.060, Item 2
Summary
Unincorporated Alameda County lets masonry fences up to 5'9" and other fences up to 7 feet go up without a permit; taller fences need one.
2. Fences using concrete, masonry, or similar heavy materials not over 5 feet 9 inches (1753 mm) high or fences, other than swimming pool barriers, using light materials not over 7 feet (2134 mm) high.
3. Oil derricks.
4. Retaining walls that are not over 4 feet (1219 min) in height measured from the bottom of the footing to the top of the wall, unless supporting a surcharge or impounding Class I, II or IIIA liquids.
5. Water tanks supported directly on grade if the capacity is not greater than 5,000 gallons (18 925 L) and the ratio of height to diameter or width does not exceed 2:1.
6. Raised decks, platforms, ramps, sidewalks and driveways accessory to Group R-3 and U occupancies not more than 30 inches (762 mm) above adjacent grade, and not over any basement or story below and are not part of an accessible route.
7. Painting, papering, tiling, carpeting, cabinets, counter tops and similar finish work.
8. Temporary motion picture, television and theater stages sets and scenery.
9. Prefabricated swimming pools accessory to a Group R-3 occupancy that are less than 24 inches (610 mm) deep, are not greater than 5,000 gallons (18 925 L) and are installed entirely above ground.
10. Shade cloth structures constructed for nursery or agricultural purposes, not including service systems.
11. Swings and other playground equipment accessory to detached one- and two-family dwellings.
Full Breakdown
Alameda County Code § 15.08.060 exempts most residential fences from the building-permit requirement: fences built of concrete, masonry, or similar heavy material up to 5 feet 9 inches high, and fences of lighter materials, other than swimming pool barriers, up to 7 feet high. Pool safety barrier fences are excluded from this exemption and must meet separate requirements. A fence taller than these limits needs a building permit from the Building Inspection Division before construction. This exemption applies only to unincorporated territory such as Castro Valley and San Lorenzo; it has no effect inside Oakland, Berkeley, or any of the county's other incorporated cities.
Violations & Fines
Erecting a fence above the height limit without a permit is a code violation; the county can require the owner to obtain a permit after the fact or reduce the fence's height.
Frequently Asked Questions
How tall can my fence be without a permit in unincorporated Alameda County?
Does a pool fence need a permit even if it's under 7 feet?
Sources & Official References
Other rules in Alameda County
California rules heatmap·Compare Alameda County to another location·View the California fence regulations overview
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