Local Experts on South San Francisco ADU Zoning
Don't get stuck in permit hell. Find 12 builders builders who understand South San Francisco municipal codes and zoning setbacks.
12
Contractors
$4K
Average Rent /mo
$1.2M
Avg Home Value
Companies & Contractors serving close to South San Francisco
Top-rated professionals serving South San Francisco and neighboring areas in San Mateo County
ADU Expansion Builders
Alliance Room Addition & ADU Contractors
Top Investment Neighborhoods
Highest rental yields in South San Francisco by ZIP Code
ZIP 94080
Highest Return
Top ZIP Codes by Rent in South San Francisco
Neighborhoods with the highest average rental rates
94080
South San Francisco Real Estate Market
Easy to understand market data to help you make informed ADU investment decisions.
Based on aggregated market data from multiple housing platforms and public records
Average Rent
Monthly rental price
$4K
Average Home Value
Property valuation
$1.2M
Market Analysis
South San Francisco shows strong rent growth of 6.0% over the past 12 months. Home values have changed by 0.2%, making ADU investment a strategic choice for homeowners.
Projected Property Value
Current market analysis for South San Francisco indicates a -0.4% increase in property values over the next 12 months.
Similar Cities to South San Francisco
Cities with similar market characteristics for comparison
California State ADU Standards
These are the guaranteed rights for homeowners in South San Francisco under California State Law. Local agencies cannot enforce stricter standards than these baselines.
State law prohibits local agencies from setting limits below 850 sq. ft. (1 bd) or 1,000 sq. ft. (2 bd). Generally, up to 1,200 sq. ft. is allowed subject to setbacks.
Local agencies cannot require rear or side setbacks of more than 4 feet.
Minimum allowed height limit. Some areas allow up to 18-25ft depending on proximity to transit or main house.
No parking required if ADU is within 1/2 mile of public transit, historic district, or part of existing home footprint.
State law currently prohibits owner-occupancy requirements for ADUs permitted between 2020 and 2025.
Development impact fees are waived for ADUs smaller than 750 sq. ft. For larger units, fees must be proportional.
* While these state laws provide a baseline, always verify specific local overlay zones or fire safety regulations with the South San Francisco planning department.
Building ADUs in South San Francisco
The rules for Accessory Dwelling Units in South San Francisco can be complex, involving setbacks, floor area ratios, and easement restrictions. Experience matters.
Our directory focuses on surfacing 12 builders local professionals who work within San Mateo County regularly and understand how to navigate the local building department efficiently.
Frequently Asked Questions about ADUs in South San Francisco
Common questions from local homeowners
ADU construction costs in South San Francisco typically range from $250-$400 per square foot for standard construction. For a 500 sq ft unit, this translates to $125,000-$200,000. Garage conversions are usually more affordable, often costing 30-50% less than new detached construction.
ROI Intelligence
Investment insights for South San Francisco
Market Rent
$4K/mo
Est. Annual Income
$41K
Est. ROI
18.5%
Monthly Cash
$3K
Value Growth (12m)
-0.2%
*Estimates based on average ADU size (800 sqft) and construction costs ($200K). Actual results may vary. Use calculator for personalized analysis.