4 Best ADU Builders in Alexandria, Virginia

Verified ADU contractors and builders in Alexandria, VA

Showing 14 of 4 listings

Expert Handyman & Remodeling

Specializing in accessory dwelling unit construction and conversion throughout Alexandria, VA, this contractor transforms properties into multi-unit homes with expert planning and skilled execution. From ground-up ADU builds to innovative garage and basement conversions, they deliver quality residential expansion solutions tailored to local codes and your space.

+1 703-653-0079
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Lux Concrete Coatings, LLC

Transform your Alexandria garage into functional living space with expert conversion services tailored to your home's needs. From design through completion, we specialize in turning underutilized garages into beautiful bedrooms, home offices, and recreation areas.

+1 703-789-4247
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Oakwood Construction and Remodeling, LLC

Specializing in accessory dwelling unit construction and conversion projects throughout Alexandria and Northern Virginia, this contractor delivers expert ADU solutions for homeowners looking to maximize their property potential. From new builds to carriage house and garage conversions, they provide comprehensive design and construction services to create functional, compliant living spaces.

+1 703-407-2022
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PREMIUM GARAGE DOOR

Transform your underutilized garage into functional living space with expert conversion services in Alexandria, VA. Our skilled team specializes in garage-to-living-space renovations, handling everything from structural modifications to finishing touches.

+1 703-889-0784
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Frequently Asked Questions — ADU Builders in Alexandria

How much does it cost to hire an ADU builder in Alexandria?

ADU construction costs in Alexandria, Virginia 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 Alexandria to get accurate quotes for your specific project.

How long does it take to build an ADU in Alexandria?

In Alexandria, 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 Virginia local regulations. Prefab and modular ADUs often have faster timelines than site-built units.

Do I need a permit to build an ADU in Alexandria?

Yes, a building permit is required for ADU construction in Alexandria, Virginia. Your ADU builder will typically handle the permit application as part of their service. Virginia has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.

What types of ADUs can be built in Alexandria?

Common ADU types in Alexandria 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 Alexandria ADU builder can advise on what's allowed on your specific parcel.