County directory

San Joaquin 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 San Joaquin County

Escalon (planning page) (opens the government site in a new tab)See our rules summary
Showing Escalon city rules
These are Escalon's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a Escalon rule may conflict with state law or is being challenged, we show the California state rule instead. This covers owner-occupancy rules for junior ADUs, a yearly rent report, matching materials and roof slope, window privacy rules and a historic-visibility rule.
Lathrop (opens the government site in a new tab)
Showing California state rules because Lathrop's local rules may conflict with state law or are being challenged
We show the state rules for an ADU ordinance from 2020 that a December 2025 state housing department letter says may not reflect current state ADU law. Check with Lathrop about how it handles this today.
Lodi (opens the government site in a new tab)
Showing California state rules because Lodi's local rules may conflict with state law or are being challenged
We show the state rules for an owner-occupancy rule with a recorded deed restriction for junior ADUs that does not depend on shared bathrooms. Check with Lodi about how it handles this today.
Manteca (planning page) (opens the government site in a new tab)
Showing California state rules because Manteca's local rules may conflict with state law or are being challenged
We show the state rules for a 16-foot height limit for all ADUs, a two-unit limit on detached ADUs at multifamily lots, and a one ADU plus one junior ADU limit. Check with Manteca about how it handles this today.
Mountain House (opens the government site in a new tab)See our rules summary
Showing Mountain House city rules
These are Mountain House's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a Mountain House rule may conflict with state law or is being challenged, we show the California state rule instead. This covers a one ADU plus one junior ADU limit, an attached ADU size cap without the state 800 sq ft floor, matching architectural style and materials, and owner-occupancy rules for junior ADUs.
Ripon (opens the government site in a new tab)See our rules summary
Showing Ripon city rules
These are Ripon's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a Ripon rule may conflict with state law or is being challenged, we show the California state rule instead. This covers a one ADU plus one junior ADU limit on other lots, a yearly rent report, separate utility meters for every unit, matching materials, roof pitch and windows, window line-of-sight rules, and extra findings for nonconforming lots.
Stockton (opens the government site in a new tab)See our rules summary
Showing Stockton city rules
These are Stockton's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Tracy (planning page) (opens the government site in a new tab)
Showing California state rules because Tracy's local rules may conflict with state law or are being challenged
We show the state rules for an ADU ordinance from 2018 that an October 2025 state housing department letter says may not reflect current state ADU law. Check with Tracy about how it handles this today.
Unincorporated San Joaquin County (planning page) (opens the government site in a new tab)See our rules summary
Showing San Joaquin County rules
These are San Joaquin County's own ADU rules on file, shown with the California state rules they build on. Each item says which is which.
Where a San Joaquin County rule may conflict with state law or is being challenged, we show the California state rule instead. This covers limits on combining ADU types, a one-main-home requirement, a common driveway requirement, parking for converted structures and owner-occupancy rules for junior ADUs.

All counties in the ADU directory