ADU Rules: Florin vs Folsom
How do adu rules rules compare between Florin, CA and Folsom, CA?
Florin and Folsom have similar restriction levels.
Florin, CA
Sacramento County
Florin is an unincorporated CDP in Sacramento County governed by the Sacramento County Zoning Code §5.4.5 (Accessory Dwelling Units), not a separate city ordinance. The County allows one ADU plus one JADU on single-family lots; on multifamily lots, one conversion ADU is allowed per four existing units or up to two detached ADUs per property.
View full Florin rules →Folsom, CA
Sacramento County
Folsom must allow ADUs on all residential lots under CA Gov Code §65852.2. Ministerial approval within 60 days for ADUs up to 800 sq ft with 4-foot setbacks, no owner-occupancy requirement, and no parking within 1/2 mile of transit. Folsom has adopted an ADU ordinance with local standards that cannot fall below state minimums.
View full Folsom rules →Key Facts Comparison
| Fact | Florin | Folsom |
|---|---|---|
| Governing Code | Sac County Zoning Code §5.4.5 | - |
| Max Detached (SF lot) | 1,200 sq ft | - |
| Max Multifamily ADU | 800 sq ft | - |
| Setback (side/rear) | 4 ft (new construction) | - |
| Impact Fees | Waived under 750 sq ft | - |
| State Law | - | Gov Code §65852.2 |
| Size | - | Up to 800 sq ft ministerial |
| Setbacks | - | 4 ft rear/side |
| Parking | - | None w/in 1/2 mi transit |
| Timeline | - | 60-day approval |
Highlighted rows indicate differences between cities.
Florin FAQ
Who regulates ADUs in Florin?
Florin is unincorporated, so Sacramento County Planning regulates ADUs under Sacramento County Zoning Code §5.4.5, not a separate city ordinance.
How many ADUs can a Florin multifamily lot add?
Under §5.4.5 and state law, multifamily lots may add one conversion ADU per four existing units (within non-livable space) OR up to two detached ADUs per property — not both.
Can I rent my Florin ADU on Airbnb?
No. State ADU law and a recorded deed restriction prohibit short-term rental of ADUs built on or after January 1, 2020 in unincorporated Sacramento County.
Folsom FAQ
Can Folsom deny my ADU permit?
Only for objective code violations (safety, setbacks from state minimums, utilities). The city cannot deny based on neighborhood character, discretionary design review, or owner-occupancy preference under state law.
Can I rent my Folsom ADU on Airbnb?
ADUs cannot be rented for terms under 30 days under state law (Gov Code §65852.2(a)(6)). Long-term rental is permitted; short-term vacation rental is not.
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