Garage Conversions: Berkeley vs San Leandro
How do garage conversions rules compare between Berkeley, CA and San Leandro, CA?
Berkeley and San Leandro have similar restriction levels.
Berkeley, CA
Alameda County
Berkeley allows garage-to-ADU and garage-to-JADU conversions under BMC 23.306, consistent with California Government Code §65852.2. No replacement parking is required when a garage is converted to an ADU, and the existing garage's setbacks are preserved for the converted footprint.
View full Berkeley rules →San Leandro, CA
Alameda County
Garage conversions to ADUs are streamlined in San Leandro under state ADU law. Replacement parking cannot be required near transit.
View full San Leandro rules →Key Facts Comparison
| Fact | Berkeley | San Leandro |
|---|---|---|
| Code Section | BMC 23.306; CA Gov Code §65852.2 | - |
| Replacement Parking | Not required | Not required near transit |
| Existing Setbacks | Preserved for conversion footprint | - |
| Conversion Expansion | Up to 150 sq ft for ingress/egress | - |
| Permit Required | Yes — building permit | - |
| ADU Conversion | - | Ministerial |
| Building Code | - | Full habitability |
| Non-ADU Use | - | Permit required |
| Review Time | - | 60 days |
Highlighted rows indicate differences between cities.
Berkeley FAQ
Do I have to replace parking if I convert my Berkeley garage to an ADU?
No. Under BMC 23.306 and state law, Berkeley cannot require replacement parking when an existing garage is converted to an ADU or JADU.
Can I add square footage to my garage during a conversion?
Yes — BMC 23.306 allows a physical addition of up to 150 sq ft to accommodate ingress, egress, and code-required features during a conversion.
Are fire sprinklers required for my converted garage ADU?
Only if the primary residence has them, per state ADU law. Berkeley follows the §65852.2 rule that ADUs cannot be required to install sprinklers if the primary home is not required to have them.
San Leandro FAQ
Do I have to build new parking if I convert my garage in San Leandro?
Not if the property is within half a mile of public transit. Most of San Leandro qualifies due to BART and AC Transit coverage.
Who enforces this in San Leandro?
San Leandro code enforcement at (510) 577-3394 handles most complaints. Alameda County agencies handle regional issues.
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