Permit Requirements: Altadena vs Torrance
How do permit requirements rules compare between Altadena, CA and Torrance, CA?
Altadena and Torrance have similar restriction levels.
Altadena, CA
Los Angeles County
Fences under 6 ft do not require a building permit in unincorporated LA County. Fences over 6 ft require permits from Building & Safety. Department of Regional Planning approval may be needed depending on fence location (front yard, corner lot). Block walls over 6 ft always require permits.
View full Altadena rules →Torrance, CA
Los Angeles County
Building permits are required for walls exceeding 6 feet. Retaining walls over 4 feet from footing to top also require permits.
View full Torrance rules →Key Facts Comparison
| Fact | Altadena | Torrance |
|---|---|---|
| Under 6 ft | No building permit needed | - |
| Over 6 ft | Permit required | - |
| Front Yard | May need DRP approval | - |
| Corner Lot | Special visibility requirements | - |
| Wall Over 6 ft | - | Permit required |
| Retaining Wall | - | Permit if over 4 ft |
| Seismic D/E/F | - | No wood or interlocking block |
| Code Section | - | TMC 92.13.1(e)(3) |
Highlighted rows indicate differences between cities.
Altadena FAQ
Do I need a permit for a fence in LA County?
No permit is needed for fences under 6 feet. Fences over 6 feet require a building permit from LA County Building & Safety. Front yard fences are limited to 42 inches in most residential zones.
How tall can my front yard fence be?
42 inches (3.5 feet) in most residential zones under Title 22. This ensures visibility for vehicles and pedestrians. Taller fences may be allowed on corner lots with specific setback compliance.
What about retaining walls?
Retaining walls over 4 feet from footing to top require a building permit and engineered plans. Multiple tiered walls designed to circumvent this limit are treated as a single wall for permit purposes.
Torrance FAQ
Do I need a permit to build a fence in Torrance?
Building permits are required for walls exceeding 6 feet. Retaining walls over 4 feet from footing to top also require permits.
How much does a fence permit cost in Torrance?
Wall Over 6 ft: Permit required. Retaining Wall: Permit if over 4 ft. Seismic D/E/F: No wood or interlocking block. Code Section: TMC 92.13.1(e)(3).
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