A simple garage conversion can range from $60,000 to over $150,000. In Los Angeles, ADU conversions start at $60,000, and conversions average around $75,000 according to contractors Anna and Vahik. If your starting point isn’t a fully enclosed garage, we have one Garage Conversion Guide It may help with additional framing, enclosure and relief work that may be involved.
Garage conversions still vary widely. Contractors have converted Los Angeles garages with existing plumbing and electrical services for at least $58,000, while other conversions cost closer to $196,000 or more, depending on the amount of work required.
In the tri-state area of New York, New Jersey, and Connecticut, Garage conversion costs It can range from $35,000 to $60,000 on average, according to Sweeten contractor Michael, although he has seen projects go as high as $100,000. For a comfort-focused garage outfitter, Michael points out that plumbing, insulation and heating shouldn’t cost more than $45,000, though add-ons like bars, refrigerators, cooking equipment or decorative wall panels can raise the total cost.
A garage conversion ADU can be more cost-conscious because the basic structure is already in place. Instead of building a new unit from scratch, the project may start with an existing slab, roof, walls, and sometimes electrical or plumbing systems.
One thing to be clear about: a garage conversion and a legal ADU are not always the same thing. A studio, office, or simple hobby room may not need the same scope as a stand-alone ADU with a bathroom, small kitchen, separate entrance, and local approvals. This distinction can quickly change the budget. For homeowners who are still making up the scale, these are Garage conversion ideas It can help show the difference between a simple prefabricated space and a more interactive living unit.
