11 Best ADU Builders in Wilmington, Delaware
Verified ADU contractors and builders in Wilmington, DE
Showing 1–11 of 11 listings
BackYardBuilds
Transform your underutilized garage into a functional living space with expert conversion services in Wilmington, DE. From design through completion, we specialize in converting garages into bedrooms, offices, studios, and recreational areas tailored to your home's needs.
Bancroft Homes
Transform your Wilmington garage into valuable living space with expert conversion services that maximize your home's potential and functionality. Our experienced team handles every aspect of garage-to-living-space conversions, from structural planning to final finishing touches.
Bromwell Construction Company, LLC
Specializing in garage-to-living-space conversions throughout the Wilmington area, this contractor transforms underutilized garages into functional bedrooms, home offices, and recreation rooms with expert craftsmanship and attention to detail. From structural modifications to finishing touches, they handle every aspect of your garage conversion project to maximize your home's livable space.
Calahan Bath, Kitchen and Sunrooms
This Wilmington-based contractor specializes in transforming underutilized garage spaces into functional living areas, bedrooms, or recreational rooms tailored to your home's needs. With expertise in garage-to-living-space conversions, they handle everything from structural modifications to finishing touches.
Colonial Construction Company, Inc.
Specializing in garage-to-living-space conversions throughout the Wilmington area, this contractor transforms underutilized garages into functional rooms that add value and livability to your home. With expertise in design, permits, and quality craftsmanship, they handle every aspect of your garage conversion project from start to finish.
Dewson Construction Company
Specializing in garage-to-living-space conversions throughout the Wilmington area, this contractor transforms underutilized garages into functional rooms that add value and comfort to your home. From design consultation through final construction, they handle every aspect of converting your garage into a bedroom, office, studio, or recreation space.
DiSabatino Construction
Transform your Wilmington garage into functional living space with expert conversion services that maximize your home's potential. From planning through completion, we specialize in converting garages into bedrooms, home offices, studios, and more.
Fine Remodeling
Transform your underutilized garage into functional living space with expert conversion services in Wilmington, DE. Our specialized team handles every aspect of garage-to-living-space projects, from structural modifications to finishing touches, creating beautiful new rooms tailored to your home's needs.
Frank J. Devonshire General Contracting
Specializing in garage-to-living-space conversions throughout Wilmington, DE, this general contracting firm transforms underutilized garages into functional rooms that add value and livability to your home. From design through completion, they handle all aspects of converting your garage into the additional space your family needs.
Handler Homes
We specialize in designing and building accessory dwelling units throughout Wilmington and the surrounding Delaware area, creating affordable secondary homes on your existing property. From initial planning through final construction, our team handles every aspect of ADU development to maximize your home's potential.
J.W. Tull Contracting Services
Transform your underutilized garage into functional living space with expert conversion services in the Wilmington area. From design through completion, we specialize in converting garages into bedrooms, home offices, and recreational spaces tailored to your needs.
Frequently Asked Questions — ADU Builders in Wilmington
How much does it cost to hire an ADU builder in Wilmington?
ADU construction costs in Wilmington, Delaware vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Wilmington to get accurate quotes for your specific project.
How long does it take to build an ADU in Wilmington?
In Wilmington, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Delaware local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Wilmington?
Yes, a building permit is required for ADU construction in Wilmington, Delaware. Your ADU builder will typically handle the permit application as part of their service. Delaware has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Wilmington?
Common ADU types in Wilmington include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Wilmington ADU builder can advise on what's allowed on your specific parcel.