Top Rated ADU Builders in Altadena
Browse the complete directory of ADU contractors in Altadena. Local rental potential: $4,369/mo. Compare pros, check licenses, and view local projects.
20
Contractors
$4K
Average Rent /mo
$1.1M
Avg Home Value
Companies & Contractors serving close to Altadena
Top-rated professionals serving Altadena and neighboring areas in Los Angeles County
Los Angeles ADU Builder
Top Investment Neighborhoods
Highest rental yields in Altadena by ZIP Code
ZIP 91001
Highest Return
Top ZIP Codes by Rent in Altadena
Neighborhoods with the highest average rental rates
91001
Altadena 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
$1.1M
Market Analysis
Altadena shows strong rent growth of 5.7% over the past 12 months. Home values have changed by 14.1%, making ADU investment a strategic choice for homeowners.
Projected Property Value
Current market analysis for Altadena indicates a -0.4% increase in property values over the next 12 months.
Similar Cities to Altadena
Cities with similar market characteristics for comparison
California State ADU Standards
These are the guaranteed rights for homeowners in Altadena 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 Altadena planning department.
Building ADUs in Altadena
Finding the right contractor is the first step to a successful project in Altadena, California. Our directory aggregates public data on 20 builders operating in the area.
Homeowners in Altadena are increasingly looking to ADUs to offset mortgage costs. With average rental rates hovering around $4,369/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 Los Angeles County.
Frequently Asked Questions about ADUs in Altadena
Common questions from local homeowners
ADU construction costs in Altadena 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 Altadena
Market Rent
$4K/mo
Est. Annual Income
$50K
Est. ROI
22.7%
Monthly Cash
$4K
Value Growth (12m)
-14.1%
*Estimates based on average ADU size (800 sqft) and construction costs ($200K). Actual results may vary. Use calculator for personalized analysis.