Bellflower, CA Fence Regulations: Retaining Walls (2026)
Key Facts
- Permit-exempt height
- 4 feet, footing to top
- Exemption void if
- Required by development approval
- Permit issuer
- Building Official, Planning Department
- Unpermitted work
- Misdemeanor plus nuisance abatement
Summary
Bellflower's Building Code amendments exempt retaining walls up to 4 feet, measured footing to top of wall, from a permit. Anything taller, or any wall required as part of a development project, needs a Building Official permit.
Except when otherwise subject to City review and approval or when otherwise required by applicable law, permits are not required for the following: Building:
1. One-story detached accessory structures used as tool and storage sheds, playhouses and similar uses not more than 10 feet in height, provided the floor area does not exceed 120 square feet and conforms to the zoning regulations of the BMC.
2. Chain-link, wrought-iron, wood and similar fences not over 6 feet high.
3. Concrete or masonry block walls not over 5 feet 11 inches in height and not required as part of the development process.
4. Retaining walls that are not over 4 feet in height measured from the bottom of the footing to the top of the wall and not required as part of the development process.
5. Light standards which do not exceed 15 feet in height.
6. Flagpoles not erected upon a building and not more than 15 feet in height.
7. A tree house provided that:
Full Breakdown
BMC Section 15.04.040 amends the adopted Building Code, Section 105.2, to list retaining walls that are not over 4 feet in height, measured from the bottom of the footing to the top of the wall, and not required as part of the development process, among the limited work exempt from permit. Because the exemption is capped at 4 feet and drops away entirely for walls tied to a development approval, a retaining wall built taller than 4 feet, or any retaining wall required by a development project regardless of height, must go through the Building Official's plan review and permitting process under Section 105 before construction starts.
Violations & Fines
Building a retaining wall over 4 feet, or a development-required wall of any height, without a permit exposes the owner to misdemeanor and nuisance-abatement enforcement under BMC Section 15.04.040.
Frequently Asked Questions
Do I need a permit for a backyard retaining wall in Bellflower?
How is the 4-foot height measured?
Sources & Official References
Other rules in Bellflower
California rules heatmap·Compare Bellflower to another location·View the California fence regulations overview
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