Build an ADU in Half Moon Bay
Ready to build your ADU in Half Moon Bay? Connect with 12 builders and get started today. Average rent: $3,946/month.
12
Contractors
$4K
Average Rent /mo
$1.5M
Avg Home Value
Companies & Contractors serving close to Half Moon Bay
Top-rated professionals serving Half Moon Bay and neighboring areas in San Mateo County
ADU Expansion Builders
Alliance Room Addition & ADU Contractors
Top Investment Neighborhoods
Highest rental yields in Half Moon Bay by ZIP Code
ZIP 94019
Highest Return
Top ZIP Codes by Rent in Half Moon Bay
Neighborhoods with the highest average rental rates
94019
Half Moon Bay 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
$1.5M
Market Analysis
Half Moon Bay shows stable market conditions over the past 12 months. Home values have increased by 0.9%, making ADU investment a strategic choice for homeowners.
Projected Property Value
Current market analysis for Half Moon Bay indicates a -0.8% increase in property values over the next 12 months.
Similar Cities to Half Moon Bay
Cities with similar market characteristics for comparison
California State ADU Standards
These are the guaranteed rights for homeowners in Half Moon Bay 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 Half Moon Bay planning department.
Building ADUs in Half Moon Bay
Ready to build your ADU in Half Moon Bay? Our platform connects you with 12 builders ready to help you start your project.
With strong rental market conditions, now is the perfect time to invest in an ADU in Half Moon Bay.
Frequently Asked Questions about ADUs in Half Moon Bay
Common questions from local homeowners
ADU construction costs in Half Moon Bay 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 Half Moon Bay
Market Rent
$4K/mo
Est. Annual Income
$45K
Est. ROI
20.4%
Monthly Cash
$3K
Value Growth (12m)
+0.9%
*Estimates based on average ADU size (800 sqft) and construction costs ($200K). Actual results may vary. Use calculator for personalized analysis.