Setback Rules: Altadena vs Glendale
How do setback rules rules compare between Altadena, CA and Glendale, CA?
Altadena and Glendale have similar restriction levels.
Altadena, CA
Los Angeles County
Altadena R-1 setbacks: front = smallest existing front yard on the same block (min 20 ft); rear = 35 ft (lots ≥20,000 sf) or 25 ft (lots <20,000 sf); side = 10% of avg lot width, min 5 ft interior / 10 ft reverse corner.
View full Altadena rules →Glendale, CA
Los Angeles County
Glendale setbacks vary by zone. R1R hillside zones require 15 ft front and 10 ft interior setbacks. Retaining walls, steps, and ramps may project into setbacks with limits. ADUs require 4 ft minimum side/rear setbacks.
View full Glendale rules →Key Facts Comparison
| Fact | Altadena | Glendale |
|---|---|---|
| Code Section | Altadena CSD 22.306.070.A.1 | - |
| Front (min) | 20 ft (or block average) | - |
| Rear ≥20k sf | 35 ft | - |
| Rear <20k sf | 25 ft | - |
| Side Interior | 10% avg lot width, min 5 ft | - |
| Within 15 ft of PL | Max 23 ft tall | - |
| R1R Front | - | 15 feet minimum |
| R1R Interior | - | 10 feet minimum |
| ADU Setback | - | 4 feet side/rear |
| Projections | - | Steps/ramps allowed 3-4 ft into setback |
Highlighted rows indicate differences between cities.
Altadena FAQ
What's the front yard setback in Altadena?
Match the smallest existing front yard on the same side of the block, but at least 20 feet — Altadena CSD 22.306.070.A.1.b.
Glendale FAQ
How do I find my setback requirements?
Check Glendale zoning map for your parcel’s zoning district, then consult the zoning code for that district’s setbacks.
Can I build closer than the setback?
Only with a variance approved by the zoning board or if your structure qualifies for an exception.
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