Pre-Submission Review · Free
San Francisco, California
Garage conversions are one of the fastest, most affordable paths to additional living space in California. Under state law, cities cannot require replacement parking when you convert a garage to an ADU — that's one of the biggest advantages over new construction. But you still need to meet habitable space standards for ceiling height, natural light, ventilation, and fire separation.
Garage conversions are one of the fastest paths to additional living space in San Francisco. Under California law, converting a garage to an ADU has significant advantages: no additional setback requirements (the structure already exists), no replacement parking requirement, and often lower construction costs than new construction.
What to know about garage conversions in San Francisco:
Use the form above to check your garage conversion against San Francisco's codes. We verify setbacks, height, coverage, and parking to flag issues before you submit.
Fill in the form above with your lot size, setbacks, building height, and other dimensions — the same numbers on your architectural plans.
Your project is compared against San Francisco's specific zoning requirements — setbacks, height limits, lot coverage, parking ratios, and FAR limits for your zone.
Critical violations, warnings, and advisory items — ranked by what a San Francisco plan checker will flag first. Fix issues before you submit and save weeks of correction cycles.
| Zone | Front | Side | Rear | Height | Coverage |
|---|---|---|---|---|---|
| RH-1 — Residential House, One Family | 0' | 0' | 15' | 40' | 75% |
| RH-2 — Residential House, Two Family | 0' | 0' | 15' | 40' | 75% |
| RH-3 — Residential House, Three Family | 0' | 0' | 15' | 40' | 75% |
San Francisco requires a 0' front setback, 0' side setback, and 15' rear setback in the most common residential zone. Specific requirements vary by zone — enter your zone code above for exact numbers.
Initial plan review in San Francisco typically takes 4-8 weeks. If corrections are required, each resubmission adds another 2-4 weeks. Running a pre-check before submitting can eliminate the most common correction items and save one or more review cycles.
The most common residential zone in San Francisco allows a maximum height of 40 feet. Height measurement methods vary — some cities measure to the highest ridge, others to the midpoint of the roof. Check the specific zone requirements for your property.
Yes. Create a free account to run unlimited plan checks against San Francisco's building codes. The tool checks setbacks, height limits, lot coverage, parking requirements, and flags common issues that San Francisco plan reviewers look for.
The most frequently flagged items in San Francisco include: Front setback must match block average — not a fixed number; Rear yard calculation: 25% of lot depth or 15', whichever greater; Light exposure plane analysis missing or incorrect. Our tool checks for all of these automatically.