Granny Flat & In-Law Suite Builders in San Lorenzo
Keep your family close. Find 20 builders contractors in San Lorenzo specializing in comfortable, accessible secondary units.
20
Contractors
$3K
Average Rent /mo
$798K
Avg Home Value
Companies & Contractors serving close to San Lorenzo
Top-rated professionals serving San Lorenzo and neighboring areas in Alameda County
Top Investment Neighborhoods
Highest rental yields in San Lorenzo by ZIP Code
ZIP 94580
Highest Return
San Lorenzo 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
$3K
Average Home Value
Property valuation
$798K
Market Analysis
San Lorenzo shows stable market conditions over the past 12 months. Home values have changed by 4.2%, making ADU investment a strategic choice for homeowners.
Projected Property Value
Current market analysis for San Lorenzo indicates a -1.0% increase in property values over the next 12 months.
Similar Cities to San Lorenzo
Cities with similar market characteristics for comparison
California State ADU Standards
These are the guaranteed rights for homeowners in San Lorenzo 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 San Lorenzo planning department.
Building ADUs in San Lorenzo
As housing costs rise, multigenerational living is making a comeback in San Lorenzo. A well-designed 'Granny Flat' keeps family close while maintaining independence for everyone.
Our directory features 20 builders professionals familiar with the specific needs of in-law suites, including single-story layouts and accessible design features required by local codes.
Frequently Asked Questions about ADUs in San Lorenzo
Common questions from local homeowners
ADU construction costs in San Lorenzo 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 San Lorenzo
Market Rent
$3K/mo
Est. Annual Income
$34K
Est. ROI
15.4%
Monthly Cash
$3K
Value Growth (12m)
-4.2%
*Estimates based on average ADU size (800 sqft) and construction costs ($200K). Actual results may vary. Use calculator for personalized analysis.