Your ADU Project, Made Simple & Competitive
Submit your ADU project, get multiple competitive bids, and choose the best builder in your city. USA & Canada — California, Toronto, Vancouver, and beyond.
See What We Do
Garage Conversion • Detached • Basement • Prefab Modular
Start your ADU project today—send us a message!
96% Customer Satisfaction
Trusted by 6,400+ Happy Customers
Real homeowners across USA & Canada share their experience.
Why Homeowners Love Our ADU Marketplace
We make building an ADU simple and competitive
Our Completed ADU
Projects
Real projects by licensed builders across
USA & Canada.
Garage Conversion
San Francisco, CA • Rental-Ready
Detached Backyard
Basement ADU
Prefab Modular
Garage Conversion
Detached Backyard
Our Completed ADU Projects
Real projects by licensed builders across
USA & Canada.
Garage Conversion
San Francisco, CA • Rental-Ready
Detached Backyard
Toronto, ON • Modern Style
Basement ADU
Vancouver, BC • Code-Compliant
Prefab Modular
Los Angeles, CA • Fast installation
Garage Conversion
Calgary, AB • Modern
Detached Backyard
San Diego, CA • Backyard
Frequently Asked Questions
- What is an ADU?
An ADU is a small second home on the same property as a main house.
- Is building an ADU legal in my city?
Yes, our marketplace works with licensed builders who handle all permits and ensure compliance with local regulations.
- How does Aduexchange.ai work?
Submit your project → multiple licensed builders bid → you compare and choose. Free for homeowners.
- How long does it take to complete an ADU?
Typically 4–8 months depending on type and size. Prefab ADUs are often faster.
- What are typical costs?
Garage: $80k–150k | Detached: $120k–250k | Basement: $90k–180k | Prefab: $100k–200k. Depends on size and finishes.
- Can I rent out my ADU?
Absolutely – most homeowners use ADUs for rental income. We’ll connect you with builders experienced in rental-ready builds.
- Do ADUs increase property taxes?
Property value may rise, impacting taxes slightly. Your builder can provide more locality-specific info.
- Are the builders verified and licensed?
Yes, all builders on our marketplace are licensed, insured, and vetted.
- Ready to Start Your ADU Project?
Multiple builders are waiting to bid on your project – Don’t wait!