ADU Rules: Courtland vs Isleton
How do adu rules rules compare between Courtland, CA and Isleton, CA?
Courtland has fewer restrictions than Isleton.
Courtland, CA
Sacramento County
Courtland is an unincorporated Sacramento River Delta community in Sacramento County, governed by Sacramento County Zoning Code §5.4.5 (Accessory Dwelling Units), not a city ordinance. The County allows one ADU plus one JADU on single-family lots, with detached ADUs up to 1,200 sq ft. Delta levee and floodplain rules add review through the Sacramento Area Flood Control Agency.
View full Courtland rules →Isleton, CA
Sacramento County
California state ADU law (Gov Code 65852.2) overrides most local rules. Isleton must allow up to 800 sq ft detached ADUs with 4-foot setbacks. Delta flood zone adds FEMA elevation requirements.
View full Isleton rules →Key Facts Comparison
| Fact | Courtland | Isleton |
|---|---|---|
| Governing Code | Sac County Zoning Code §5.4.5 | - |
| Max Detached | 1,200 sq ft | - |
| Floodplain | Chapter 16.04 (lowest-floor elev.) | - |
| Setback (side/rear) | 4 ft (new construction) | - |
| Levee Setback | May apply (Cal. Water Code) | - |
| Detached ADU | - | Up to 800 sq ft by right |
| Setbacks | - | 4 feet side and rear |
| Processing | - | 60 days maximum |
| Flood | - | FEMA BFE plus 1 foot |
| State Law | - | Gov Code 65852.2 |
Highlighted rows indicate differences between cities.
Courtland FAQ
Who regulates ADUs in Courtland?
Courtland is unincorporated, so Sacramento County Planning regulates ADUs under Sacramento County Zoning Code §5.4.5, not a separate city ordinance.
Do floodplain rules apply to Courtland ADUs?
Yes for parcels in FEMA Zones A or AE — the lowest floor must be elevated at or above the base flood elevation under Sacramento County Floodplain Management Ordinance Chapter 16.04, and flood-resistant materials are required below that elevation.
Are there levee setbacks for ADUs near Delta levees?
Yes for parcels adjacent to State Plan of Flood Control project levees — the Central Valley Flood Protection Board requires encroachment permits and setbacks under California Water Code §8700 et seq.
Isleton FAQ
Can Isleton deny my ADU permit?
Not for meeting state minimums. The city must permit an ADU that meets the state law standards within 60 days.
How does flooding affect ADU construction?
Isleton is in FEMA Zone AE. Living space must be elevated to base flood elevation plus 1 foot, or the structure must be flood-resistant.
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