Interactive Tool
ADU Cost Calculator
Estimate the cost of your ADU project based on size, construction type, location, and other factors
Project Details
Enter the details of your ADU project to get a cost estimate
200 sq ft1200 sq ft
Cost Estimate
Based on your project details, here's an estimated breakdown of costs
Construction Cost
$154,000(73%)Permitting
$12,320(6%)Design & Engineering
$15,400(7%)Site Work
$15,000(7%)Utilities
$15,000(7%)Total Estimated Cost
$211,720
Likely range: $201,134 – $222,306
This is an estimate based on the information provided. Actual costs may vary.
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Included in this estimate:
- Complete custom ADU design
- Factory-built modules
- Permitting and approval assistance
- Site preparation and foundation
- Utility connections
Potential Cost Savings:
- Using a preapproved plan can save $10,000-$20,000 in design and permitting costs
- Modular construction typically saves 10-15% compared to traditional construction
- Standard finishes vs. premium can save 15-20% on interior costs
This calculator provides an estimate based on average costs in your area. For a detailed quote specific to your project, please contact our team.
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Our team is here to help you navigate the entire process, from design to financing to construction.