County directory

Sacramento County ADU rules

Each place name links to that city or county's own ADU page. Places with a 'See our rules summary' button also have our plain-language summary of the local ADU rules, with sources. Each place below says whether we show local rules or California state rules.

Places in Sacramento County

Citrus Heights (opens the government site in a new tab)
Showing California state rules because a local rule change is pending
A local rule change is pending. The City is updating its ADU zoning rules; its 2026 zoning code update page lists the amendments as effective on a date still to be set, so current local rules could not be confirmed. We'll add the new local rules after they take effect and we've reviewed them.
Elk Grove (planning page) (opens the government site in a new tab)See our rules summary
Showing Elk Grove city rules
These are Elk Grove's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a Elk Grove rule may conflict with state law or is being challenged, we show the California state rule instead. This covers architectural compatibility with the main home, limits on combining ADU types on single-family lots, one parking space per bedroom, and owner-occupancy rules for junior ADUs.
Folsom (opens the government site in a new tab)See our rules summary
Showing Folsom city rules
These are Folsom's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Galt (opens the government site in a new tab)See our rules summary
Showing Galt city rules
These are Galt's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a Galt rule may conflict with state law or is being challenged, we show the California state rule instead. This covers a deed restriction on every ADU, owner-occupancy rules for junior ADUs, a yearly rent report, matching materials and roof slope, window privacy rules and a historic-visibility rule.
Isleton (planning page) (opens the government site in a new tab)See our rules summary
Showing Isleton city rules
These are Isleton's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a Isleton rule may conflict with state law or is being challenged, we show the California state rule instead. This covers unit counts that limit combining ADU types and detached ADUs on multifamily lots, architectural compatibility, and owner-occupancy rules for junior ADUs.
Rancho Cordova (opens the government site in a new tab)
Showing California state rules
We couldn't read this city's ADU code yet, so we're showing California state rules. Check with the city before you plan.
City ADU page: https://www.cityofranchocordova.org/home/showpublisheddocument/20034/638644999044430000
Sacramento (opens the government site in a new tab)
Showing California state rules because Sacramento's local rules may conflict with state law or are being challenged
We show the state rules for limits on combining ADU types, street side setbacks, owner-occupancy rules, ADUs with two-unit (SB 9) projects, and historic-district and design standards adopted by resolution (raised in January and August 2026 state housing department letters). Check with Sacramento about how it handles this today.
Unincorporated Sacramento County (opens the government site in a new tab)See our rules summary
Showing Sacramento County rules
These are Sacramento County's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a Sacramento County rule may conflict with state law or is being challenged, we show the California state rule instead. This covers a County guideline that ADUs and junior ADUs are not allowed in the Agricultural-Residential (AR) and Agricultural (AG) zones.

All counties in the ADU directory