Top Rated ADU Builders in Colma
Browse the complete directory of ADU contractors in Colma. Compare pros, check licenses, and view local projects.
12
Contractors
$1.1M
Avg Home Value
Companies & Contractors serving close to Colma
Top-rated professionals serving Colma and neighboring areas in San Mateo County
ADU Expansion Builders
Alliance Room Addition & ADU Contractors
Colma 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
Data not available
Average Home Value
Property valuation
$1.1M
Market Analysis
Colma shows stable market conditions over the past 12 months. Home values have changed by 1.8%, making ADU investment a strategic choice for homeowners.
Similar Cities to Colma
Cities with similar market characteristics for comparison
La Cresta - Altavista
Antelope
Stevenson Ranch
West Carson
Taft
California State ADU Standards
These are the guaranteed rights for homeowners in Colma 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 Colma planning department.
Building ADUs in Colma
Finding the right contractor is the first step to a successful project in Colma, California. Our directory aggregates public data on 12 builders operating in the area.
Homeowners in Colma are increasingly looking to ADUs to offset mortgage costs. With average rental rates hovering around /mo, a well-built unit can turn into a cash-flow positive asset quickly.
Use our platform to compare local pros. We compile information from across the web to help you evaluate experience, specializations, and service areas for projects in San Mateo County.
Frequently Asked Questions about ADUs in Colma
Common questions from local homeowners
ADU construction costs in Colma 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.