Looking for garage conversion in San Mateo? ODL Construction is a licensed Bay Area general contractor serving San Mateo and the surrounding Peninsula — from San Mateo Park, Aragon, Hillsdale and beyond. Turn an underused garage into a real bedroom, office, in-law unit, or income ADU.
A garage conversion is the most cost-effective square footage you can add to a Bay Area home — the foundation, walls, and roof already exist, so you're finishing space rather than building it from scratch. It's the fastest path to an extra bedroom, a real office, or an income-producing ADU.
For San Mateo specifically, it comes down to local realities: San Mateo's mix of period San Mateo Park homes and mid-century neighborhoods rewards remodels that match the era — generic finishes underperform here. San Mateo's building department is established and consistent; older neighborhoods can add character and tree considerations on exterior work. We design and permit your garage conversion around exactly those conditions.
Garage Conversion in San Mateo — what we handle
- Garage-to-living-space conversions (bedroom, office, gym, studio)
- Garage-to-ADU conversions with kitchen and bath
- Code insulation, heating, and Title 24 compliance
- Permitted electrical and plumbing
- Proper egress windows and doors
- Foundation and floor leveling
- Replacing the garage door with finished wall and windows
- Permits and inspections
Garage Conversion cost
Typical Bay Area ranges, not a quote. Whether it's a simple room or a full ADU with kitchen and bath is the biggest cost driver, along with foundation and utility work. Fixed proposal after a site visit.
Timeline
A habitable-room conversion often takes 4–8 weeks; a garage-to-ADU typically runs 3–4 months including permitting.
San Mateo permits
San Mateo's building department is established and consistent; older neighborhoods can add character and tree considerations on exterior work.
