Structure Height Limits: Castaic vs Norwalk
How do structure height limits rules compare between Castaic, CA and Norwalk, CA?
Castaic and Norwalk have similar restriction levels.
Castaic, CA
Los Angeles County
Building height limits in unincorporated LA County are set by Title 22 zoning district. Height limit exceptions exist for elevator shafts, stairwells, and similar features per Section 22.110.060.C. Community Standards Districts may impose stricter height requirements.
View full Castaic 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 | Castaic | Norwalk |
|---|---|---|
| Varies By | Zone and Community Standards District | - |
| Exceptions | Elevator shafts, stairwells exempt | Chimneys, antennas limited |
| ADU Detached | 16 ft per state law | - |
| Reference | Title 22, Section 22.110 | - |
| Residential | - | 35 feet / 2.5 stories typical |
| Measured From | - | Average finished grade |
| Topic | - | Structure Height Limits |
Highlighted rows indicate differences between cities.
Castaic FAQ
How tall can I build in unincorporated LA County?
In most R-1 residential zones, the limit is 35 feet or 2.5 stories, whichever is less. Height limits vary by zone. Check your zoning district in Title 22 or at planning.lacounty.gov.
How is building height measured?
Height is measured from the lowest point of the natural or finished grade (whichever is lower) to the highest point of the roof, including ridges and equipment.
Can I get a height exception?
Yes, through a Conditional Use Permit or variance from the Regional Planning Commission. This requires a public hearing and demonstration that the exception is justified. Contact (213) 974-6411.
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.
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