Garage Conversion Contractors in San Diego, CA
Converting a garage is often the fastest, most affordable way to add a legal living unit in San Diego. The structure, slab, and roof already exist — the work is turning it into conditioned, code-compliant living space with a kitchen and bathroom.
Garage conversion cost in San Diego
Typical range: $100,000–$185,000 all-in, depending on plumbing runs, foundation condition, ceiling height, and finish level.
Editorial estimate — actual costs vary. Full San Diego ADU cost guide.
Permits for garage conversions in San Diego
Garage conversions require building permits even though the structure exists. California law removes the biggest historical obstacle: cities cannot require you to replace the parking you lose. State law's 60-day review applies; San Diego's standard plans and dedicated ADU review can be faster. Typical custom projects run 2–4 months from design start to permit issuance.
Contractors serving San Diego
Serves San Diego County, from coastal areas like La Jolla and Carlsbad to inland communities like Poway and El Cajon
Design-build, Detached ADUs, Attached ADUs, Garage conversions
Serves San Diego County, including the City of San Diego, Chula Vista, Oceanside, Escondido, Carlsbad, and El Cajon
Construction management, Design & permitting, Pre-approved plans
Serves San Diego County, including Vista, Oceanside, Escondido, Chula Vista, and Valley Center
Modular ADUs, Custom ADUs, Garage conversions
Serves San Diego County, covering 22+ communities including La Jolla, Del Mar, Coronado, Chula Vista, Escondido, and Poway
Design-build, Detached ADUs, Garage conversions, Junior ADUs, Fixed-price contracts
Serves San Diego County
Standalone ADUs, Above-garage ADUs, Garage conversions
Serves San Diego County, including Poway, Rancho Bernardo, Scripps Ranch, Carmel Valley, La Jolla, and Encinitas
Design-build, Detached ADUs, Garage conversions, Basement conversions, Junior ADUs
Serves San Diego, California
Custom design, Detached ADUs, Garage conversions, Solar installation
Serves San Diego County
Design-build, Garage conversions, Custom design
Serves San Diego and surrounding areas including Chula Vista, El Cajon, La Mesa, Poway, and Santee
Garage conversions, Detached ADUs, Attached ADUs
Serves San Diego County
Detached ADUs, Attached ADUs, Garage conversions, Junior ADUs, Aging-in-place remodeling
Serves San Diego and surrounding Southern California areas
Detached ADUs, Garage conversions, Basement conversions, In-law suites
FAQ
How much does a garage conversion cost in San Diego?
Most garage conversions in San Diego run $100,000–$185,000 depending on plumbing, ceiling height, foundation condition, and finishes. These are editorial estimates — actual quotes vary.
Do I have to replace the parking I lose?
No. California law prohibits cities from requiring replacement parking when a garage is converted to an ADU.
Is my garage suitable for conversion?
Most attached and detached garages can be converted, but a contractor will check the foundation, ceiling height (7'6" minimum in living areas), and utility access. Older garages sometimes need foundation or slab work, which affects cost.
Do garage conversions need permits in San Diego?
Yes — converting a garage into living space always requires permits, even though the building already exists. State law's 60-day review applies; San Diego's standard plans and dedicated ADU review can be faster. Typical custom projects run 2–4 months from design start to permit issuance.
How long does a garage conversion take?
Typically 1–3 months of design and permitting plus 2–5 months of construction — noticeably faster than building a detached ADU from scratch.