This site does not publish an appraisal multiplier, a dollar-for-dollar return, or a neighborhood rent that “proves” value. Those figures are not in the claims ledger. An appraiser or a licensed agent who will put comps in writing for your address is the person who can talk about value.
A permitted conversion is habitable space the next buyer, lender, and inspector can see in the record. An unpermitted conversion is a disclosure and occupancy problem. This page does not quote a legalization cost. Ask the licensed pro who would file the retroactive permit for a written scope.
What to ask an appraiser
Ask whether they found permitted ADU or JADU comps in the same city. Ask whether they counted the garage as lost parking. Ask whether they treated the unit as a full ADU or a junior ADU. A JADU cannot be sold separately from the house. Owner occupancy for a JADU depends on whether sanitation is shared.
Parking still matters to some buyers. State law bars most replacement-parking requirements when a garage becomes an ADU. The City of San Diego still lists a Beach Impact area exception outside transit priority areas. Coronado has its own replacement-parking rule. Confirm the agency that stamps the property.
Taxes
A permitted conversion can change assessed improvement value. This site does not state a Proposition 13 formula. Ask the County Assessor or a tax professional how an improvement is treated on your parcel.
Getting the conversion done
Published market bands for conversion types live on the cost hub. They are not a quote from Garage Convert SD. Garage Convert SD matches homeowners with licensed, independent local professionals. The homeowner contracts with and pays that professional directly. Call (858) 400-4935.
Does converting a garage to an ADU increase property taxes in San Diego?
It can change the assessed improvement. Confirm with the assessor. Do not use this page as tax advice.
Will I lose value by not having a garage?
Some buyers want a garage. Some want a legal dwelling. An appraiser with local comps is the person who can weigh that for your street.
How do I find comps for ADU properties near me?
A licensed agent or appraiser. Permit history is a public-record question, not a rent table on this blog.
Does a JADU add as much value as a full ADU?
They are different products. A JADU is smaller, attached-only, and can share a bath. Do not convert that into a rent or appraisal spread on this site.
See full ADU and junior ADU.