ADU Rules: El Monte vs Santa Monica
How do adu rules rules compare between El Monte, CA and Santa Monica, CA?
El Monte and Santa Monica have similar restriction levels.
El Monte, CA
Los Angeles County
El Monte Municipal Code Chapter 17.110 regulates Accessory Dwelling Units (ADUs) and Junior ADUs per California Government Code Sections 66314-66339. Detached ADUs may be up to 1,200 sq ft; attached up to 800 sq ft or 50% of the primary dwelling.
View full El Monte rules →Santa Monica, CA
Los Angeles County
Santa Monica regulates ADUs under SMMC §9.31.025. Maximum size is 650 sq ft on lots up to 6,000 sq ft or 800 sq ft on larger lots. No development fees. Ministerial approval process.
View full Santa Monica rules →Key Facts Comparison
| Fact | El Monte | Santa Monica |
|---|---|---|
| Code Section | EMMC Ch. 17.110 | SMMC §9.31.025 |
| Detached Max | 1,200 sq ft | - |
| Attached Max | 800 sq ft or 50% of primary | - |
| Max Per Lot | 2 ADUs + 1 JADU | - |
| STR Use | Prohibited | - |
| Building & Safety | (626) 580-2037 | - |
| Max Size (small lot) | - | 650 sq ft (lots ≤6,000 sf) |
| Max Size (large lot) | - | 800 sq ft (lots >6,000 sf) |
| Setbacks | - | 4 feet rear/side (new) |
| Dev Fees | - | None |
Highlighted rows indicate differences between cities.
El Monte FAQ
How big can an ADU be in El Monte?
Detached ADUs may be up to 1,200 sq ft. Attached ADUs up to 800 sq ft or 50% of the primary dwelling. Up to 2 ADUs and 1 JADU per single-family lot.
Can I convert my El Monte garage to an ADU?
Yes. Garage conversions to ADUs are permitted under California state law and El Monte's Chapter 17.110. A building permit is required.
Santa Monica FAQ
Can I build an ADU on my property in Santa Monica?
Santa Monica regulates ADUs under SMMC §9.31.025. Maximum size is 650 sq ft on lots up to 6,000 sq ft or 800 sq ft on larger lots. No development fees. Ministerial approval process.
What are the size limits for an accessory dwelling unit in Santa Monica?
Code Section: SMMC §9.31.025. Max Size (small lot): 650 sq ft (lots ≤6,000 sf). Max Size (large lot): 800 sq ft (lots >6,000 sf). Setbacks: 4 feet rear/side (new).
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