Structure Height Limits: Altadena vs Norwalk
How do structure height limits rules compare between Altadena, CA and Norwalk, CA?
Altadena and Norwalk have similar restriction levels.
Altadena, CA
Los Angeles County
Altadena R-1 max height: 35 ft on lots ≥20,000 sf; 30 ft on lots <20,000 sf and flag lots. Maximum 2 stories above grade. No portion of any structure may exceed 23 ft if within 15 ft of any property line.
View full Altadena rules →Norwalk, CA
Los Angeles County
Norwalk zoning code sets maximum building heights by district. Residential zones typically limit structures to 35 feet or 2 to 3 stories.
View full Norwalk rules →Key Facts Comparison
| Fact | Altadena | Norwalk |
|---|---|---|
| Code Section | Altadena CSD 22.306.070.A.2 | - |
| Max Height ≥20k sf | 35 ft | - |
| Max Height <20k sf | 30 ft | - |
| Flag Lots | 30 ft | - |
| Max Stories | 2 above grade | - |
| Within 15 ft of PL | 23 ft | - |
| Residential | - | 35 feet / 2.5 stories typical |
| Measured From | - | Average finished grade |
| Exceptions | - | Chimneys, antennas limited |
| Topic | - | Structure Height Limits |
Highlighted rows indicate differences between cities.
Altadena FAQ
How tall can a house be in Altadena?
35 ft on lots 20,000 sq ft and larger, 30 ft on smaller lots, with a maximum of 2 stories above grade (Altadena CSD 22.306.070.A.2).
Norwalk FAQ
What is the max height for a house?
Typically 35 feet or 2.5 stories in residential zones. Check Norwalk zoning code for your specific district.
Do chimneys count toward height?
Chimneys and similar projections are usually exempt up to a limited additional height above the roof.
Compare other topics
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