Garage Renovation Cost in San Diego
Updated April 19, 2026
Garage renovation costs in San Diego average $63–$125 per square foot at standard quality — 25% above the US national average. A 400 sq ft San Diego garage renovation runs $25,200–$50,000 mid-range. San Diego is one of the top markets in the US for garage-to-ADU conversions — California ADU legislation, combined with San Diego's extremely high housing costs and year-round mild climate, makes a garage ADU one of the highest-ROI home investments available. A fully permitted garage ADU in San Diego generates $2,000–$3,800/month in rental income and can add $250,000–$450,000 in property value.
Get Your Free Estimate
Takes 2 minutes · Instant results · No signup needed
Room Type
How It Works
Select room type & size
Choose from 8 room types and enter your square footage.
Pick quality & location
We adjust costs based on your city's labor and material index.
Add your work scope
Check off the specific work items included in your project.
Get your instant estimate
See a full cost breakdown with materials, labor, and timeline.
Frequently Asked Questions
A garage renovation in San Diego costs $63–$125 per square foot at standard quality. A 400 sq ft San Diego garage renovation runs $25,200–$50,000 mid-range. A full garage-to-ADU conversion with kitchen, bathroom, and all permits typically costs $90,000–$180,000 in San Diego — but adds $250,000–$450,000 in property value and generates $2,000–$3,800/month in rental income.