Folsom vs Isleton
How do lot coverage limits rules compare between Folsom, CA and Isleton, CA?
Folsom and Isleton have similar restriction levels.
Folsom, CA
Sacramento County
Folsom typically limits lot coverage by structures to 40-50% in R-1 residential zones under FMC Title 17. ADUs up to 800 sq ft cannot be blocked by lot coverage limits per Gov Code §65852.2.
View full Folsom rules →Isleton, CA
Sacramento County
Sacramento County lot coverage limits: typically 40-50 percent in single-family residential zones for all structures combined. Rural and agricultural zones have lower percentages but larger absolute footprints allowed. Impervious surface coverage (driveways, patios) separately regulated under stormwater rules. Floor Area Ratio (FAR) may also apply.
View full Isleton rules →Key Facts Comparison
| Fact | Folsom | Isleton |
|---|---|---|
| R-1 coverage | 40-50% typical | - |
| Counts | Main + garage + accessory | - |
| Excludes | Low decks, pools | - |
| ADU override | 800 sq ft guaranteed | - |
| Stormwater | Separate impervious limits | - |
| SFR | - | 40-50 percent typical |
| Rural | - | 15-25 percent |
| Impervious | - | Stormwater limits apply |
| FAR | - | Zone-specific |
| ADU | - | 800 sq ft state minimum |
Highlighted rows indicate differences between cities.
Folsom FAQ
Does my ADU count toward lot coverage in Folsom?
Yes generally, but state law (Gov. Code §65852.2) requires Folsom to allow at least one 800 sq ft ADU even if it exceeds local lot coverage limits. Larger ADUs must meet the coverage cap.
Who enforces this in Folsom?
Folsom code enforcement at (916) 355-7285 handles most complaints.
Isleton FAQ
Does my pool count toward lot coverage?
Pool decks and structures typically count. Water surface usually counts as impervious surface for stormwater but not always for lot coverage. Check Title 3 definitions for your zone.
Can I exceed lot coverage with an ADU?
State law requires cities and counties to allow an 800 sq ft ADU regardless of lot-coverage limits that would otherwise preclude it.
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