ADU Rules: Lincoln vs Roseville
How do adu rules rules compare between Lincoln, CA and Roseville, CA?
Lincoln and Roseville have similar restriction levels.
Lincoln, CA
Placer County
Lincoln regulates Accessory Dwelling Units (ADUs) under Lincoln Municipal Code Chapter 18.37, which must conform to California Gov. Code §65852.2 (state ADU law). One ADU plus one Junior ADU is permitted by right on single-family lots.
View full Lincoln rules →Roseville, CA
Placer County
Roseville permits ADUs on residential lots per state mandate. The city processes ADU applications within 60 days per state law. West Roseville's newer subdivisions see growing ADU interest. Standard state setbacks and size limits apply.
View full Roseville rules →Key Facts Comparison
| Fact | Lincoln | Roseville |
|---|---|---|
| Code section | LMC Chapter 18.37 | - |
| Max ADU size (state floor) | 850-1,000 sq ft | - |
| Max JADU size | 500 sq ft | - |
| Side/rear setback | 4 feet | - |
| Max height (detached) | 16 feet | - |
| Approval type | Ministerial (by right) | - |
| Pre-approved plans | Yes (AB 1332) | - |
| Max Size | - | Up to 1,200 sq ft |
| Setbacks | - | 4 ft rear/side minimum |
| Processing | - | 60 days per state law |
| JADU | - | Up to 500 sq ft allowed |
Highlighted rows indicate differences between cities.
Lincoln FAQ
How many ADUs can I build on my Lincoln single-family lot?
Under state law applied through LMC Chapter 18.37, you may build one ADU plus one JADU on a single-family lot. Multifamily lots have separate allowances.
Does Lincoln have stricter ADU rules than state law?
No. Local rules must conform to Cal. Gov. Code §65852.2 floors. Lincoln cannot impose minimum lot size, restrictive setbacks beyond 4 feet, or owner-occupancy on ADUs permitted between Jan 1, 2020 and Jan 1, 2025.
What is an AB 1332 pre-approved plan?
Lincoln offers city-vetted ADU plans (1BR 661 sq ft, 2BR 746 sq ft) that receive expedited 30-day approval per AB 1332. Contact permittech@lincolnca.gov.
Roseville FAQ
Can I build an ADU?
Yes. California law requires all cities to allow ADUs on residential lots. Roseville must process permits within 60 days.
Do I need to live on the property?
No owner-occupancy requirement for ADUs under current California law.
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