Shed Rules: Altadena vs Norwalk
How do shed rules rules compare between Altadena, CA and Norwalk, CA?
Altadena and Norwalk have similar restriction levels.
Altadena, CA
Los Angeles County
Sheds 120 sq ft or smaller and ≤12 ft tall typically don't need a building permit in Altadena, but they still must comply with Altadena CSD setbacks. Anything larger needs a permit.
View full Altadena rules →Norwalk, CA
Los Angeles County
Norwalk allows small sheds without permits (typically under 120 sq ft). Larger structures require building permits and must meet setback requirements.
View full Norwalk rules →Key Facts Comparison
| Fact | Altadena | Norwalk |
|---|---|---|
| No-Permit Threshold | ≤120 sq ft | - |
| Authority | LA County Title 26 + CBC §105.2 | - |
| Min Setbacks (R-1) | 5 ft side, 5 ft rear | - |
| Lot Coverage | 0.25 × lot + 1,000 sf (CSD 22.306.070.A.4) | - |
| No Permit | - | Under 120 sq ft |
| Permit | - | Over 120 sq ft |
| Setbacks | - | 3 to 5 ft from property line |
| Habitation | - | Prohibited |
Highlighted rows indicate differences between cities.
Altadena FAQ
Do I need a permit for a shed in Altadena?
Not if it is 120 sq ft or smaller and has no electrical/plumbing. Larger sheds require a building permit from LA County Building & Safety.
Norwalk FAQ
Do I need a permit for a shed?
Sheds under 120 sq ft typically don’t need a permit, but must still meet setback requirements.
Can I put electrical in my shed?
Electrical connections require a separate electrical permit regardless of shed size.
Compare other topics
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