Get bids to build an ADU
Detached backyard units, garage conversions, and attached additions. Post your accessory dwelling unit (ADU) project from any US address, compare the bids you receive, and keep plans, permits, and milestone payments with the job.
- Post free from any US address
- Compare ADU bids side by side
- Pay by approved milestone
ADUs work you can post on Sullix
Common scopes to describe in your project. Post once, then compare the bids pros who serve your area send.
Detached & attached units
Backyard cottages, units above a garage, and attached additions with their own entrance, kitchen, and bath.
Garage & basement conversions
Converting existing space, with insulation, egress, plumbing, and electrical service planned into the scope.
Plans, permits & utilities
Zoning checks, plan sets, permit review, and utility connections kept on the project record with each milestone.
Why hire adus contractors through Sullix
License and insurance details
Review the license and insurance details a contractor adds to their profile, then confirm them with the issuing board before you hire.
Milestone payments
Pay as approved milestones complete, instead of paying for everything before work starts.
Documented scope & change orders
Every bid, contract, and change order is timestamped and stored in your project workspace, so the record is clear if anything goes sideways.
Frequently asked questions
What affects the cost of an ADU?
Whether it is detached, attached, or a conversion; square footage; foundation and site work; utility connections; finishes; design and permit fees; and local labor rates.
Can I build an ADU on my property?
It depends on your city or county. Zoning rules set whether ADUs are allowed and limit size, height, setbacks, and parking. Check with your local planning department before you commit to a design.
How long does an ADU take to build?
Design and permitting often take several months. Construction commonly runs several months more, depending on the unit type, site conditions, inspections, and utility work.
Ready to get bids?
Post your adus project free from any US address, compare the bids you receive, and pay as approved milestones complete.
Post your ADU project