The Cost Reality: What Will My ADU Cost?
ADU Type
Typical Cost Range
Key Variables
Basic Conversion (JADU/Garage)
$60K –$150K
The lowest cost option, best for maximum rental ROI. Costs depend primarily on the existing structure’s condition and required utility upgrades.
New Detached / Mid-Size
$150K – $350K
The most common range for a standard 600-800 sq ft backyard unit. Costs are highly dependent on site access, necessary utility trenching, and foundation complexity.
Custom Luxury / Large
$350K – $450K+
This range covers large (1,200 sq ft) or custom-designed units with high-end finishes, complex rooflines, or challenging engineering needs.
The Key Takeaway for Homeowners:
The Cost Anchor: Construction is $300 – $450+ per square foot in Los Angeles. The final cost of your project depends entirely on two factors: the size of the unit and the quality of the finishes you select (e.g., standard tile vs. high-end quartz).
We use our construction expertise to keep the cost per foot optimized for your specific
investment goal.
