Sacramento County's Zoning Code says parking lost when a garage becomes an ADU need not be replaced. Its ADU guide allows a converted ADU with a new detached ADU and a junior ADU, while state law requires no new setback for converting an existing structure.
Last verified 2026-10-18. Rules change; the Sacramento County planning desk has the final word.
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The County's ADU guide (V8, Table 1) allows one new detached ADU, one junior ADU and one more ADU that is either attached new construction or a conversion of existing space. The older Zoning Code table still lists one ADU and one junior ADU; the County says it follows state law when the two conflict.
Sacramento County ADU and JADU guide (V8), Table 1, p. 2; County interim state-law guidance| Type | Est. all-in cost | Est. rent |
|---|---|---|
| Garage conversion | $196-$319 per sq ft of garage (about $78,000-$127,000 for a 400 sq ft garage) | $1,300-$1,750/mo |
Estimates for a first conversation, not bids or appraisals. Source: LotUpside price book sac-2026-10.
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No. Sacramento County Zoning Code Table 5.11 says replacement parking is not required when a garage, carport or covered parking structure is converted with an ADU. Gov. Code 66314(d)(11) also bars a replacement-parking requirement.
The County ADU guide (V8, Table 1, p. 2) allows one converted ADU, one new detached ADU and one junior ADU on a single-family or halfplex lot. The County's interim state-law guidance says it follows state law where its older Zoning Code table conflicts.
Gov. Code 66314(d)(7) requires no new setback for an existing accessory structure converted to an ADU, including a structure rebuilt in the same location and dimensions. The County still reviews the project as a permit application.
Neither. It is a screening from public records, not professional advice, and not a survey, soils report, appraisal, loan offer or permit; every number is an estimate. A licensed designer confirms the final plan, and your city or county gives final approval.