All the Value of an ADU. A Fraction of the Cost.
The most cost-effective way to add a bedroom, office, or rental unit to your home.
A garage conversion is the fastest and most affordable way to add functional living space to your Bay Area home. Custom Home handles everything from design and permits to construction, with the same design transparency as our custom homes.
Years in the Bay Area
Licensed since 2005. Hundreds of projects completed across the South Bay, Peninsula, and beyond.
BuildZoom Rated
Ranked in the top 1% of Bay Area contractors based on qualifications, performance, and reliability.
Design-First Process
See every detail in 3D before construction. Our two-phase approach separates design from build so you never commit blind.
Change Orders
When you follow our full two-phase process from A to Z, every decision is locked in during design. No mid-project surprises.
Itemized Pricing
Every material, every line item, visible before you sign. No allowances, no hidden fees.
Why Choose Custom Home for Garage Conversions
Most Affordable Option
Leverage your existing structure to minimize costs. No new foundation or roof needed in most cases.
Fast Timeline
Garage conversions typically complete in 4-6 months. The fastest path to a new living space.
Full Design Included
Even for conversions, our design phase ensures you see the finished space before work begins.
Permit Management
We navigate local building codes and secure all necessary permits for your conversion.
What to Expect
Every project is unique. Final cost depends on garage size, finishes, and plumbing requirements.
Key Cost Factors
- Garage size and condition
- Plumbing additions
- Finish level
- Permit requirements
All pricing is approximate and subject to change. Every project is unique, and final costs are determined on a project-by-project basis during our design phase.
Ready to discuss your garage conversions project? Call (888) 306-1688 or schedule a consultation.
Frequently Asked Questions
How much does a garage conversion cost?
Garage conversions in the Bay Area typically range from $120,000 to $150,000 depending on size, finishes, and whether plumbing is added. This is significantly less than building a new structure. Our design phase gives you the exact number before construction starts.
Do I need a permit to convert my garage?
Yes. A building permit is required for any garage conversion. We handle the complete permitting process with your local jurisdiction.
Can I still park in my garage after conversion?
A full conversion transforms the entire garage into living space. However, many Bay Area cities have relaxed parking requirements for ADU conversions under California state law.