ADU Builder in
Alexandria, VA
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What Our Clients Say
Self-Contained ADU Services in Alexandria, VA
From historic Del Ray properties to single-family lots in Rosemont & North Ridge, we build 100% legal, self-contained Accessory Dwelling Units (ADUs) designed to maximize property equity and monthly cash flow.
Detached ADU (Backyard Cottage)
A 100% standalone 2nd home built in your backyard — featuring private kitchen, bath, and utility setups. Ideal for Del Ray, Rosemont & North Ridge lots to maximize rental income.
Garage Conversion ADU
Transform an existing detached or attached garage into a fully conditioned, legal studio or 1-bedroom ADU apartment with separate exterior access.
Basement ADU (Lower-Level Unit)
Convert your walkout or daylight basement into a legal secondary residential unit complete with legal egress, private kitchen, bath, and separate entrance.
Attached ADU (In-Law Wing)
An independent residential wing attached to the primary home — equipped with its own private entrance, kitchenette, and living quarters for aging parents or family.
Custom Architectural ADU Design
In-house architectural plans, 3D renderings, and site layouts custom-tailored to Alexandria lot topography, setback limits, and HOA covenants.
Alexandria Permitting & Zoning
We manage 100% of City of Alexandria Department of Planning & Zoning approvals, lot coverage reviews, building permits, and inspections end-to-end.
What is an ADU — Independent Living vs. Standard Home Addition
In Alexandria, an Accessory Dwelling Unit (ADU) is a 100% self-contained, independent secondary residence built on the same lot as a primary single-family home. Unlike a standard room addition, every legal Alexandria ADU we construct includes its own private exterior entrance, full kitchen or kitchenette, private bathroom, and climate control.
The City of Alexandria allows 4 distinct ADU typologies: Detached backyard cottages, attached residential wings, garage conversions, and basement units. We handle 100% of City of Alexandria zoning compliance, setback verification, and building permit filings for complete peace of mind.
Key ADU Benefits for Alexandria Homeowners:
WHY US
Why Alexandria Homeowners Choose US Home Design Build
We are dedicated ADU builders with over a decade of hands-on experience across Northern
Virginia communities.
Alexandria ADU Specialists
We know the City of Alexandria's zoning ordinances, historic district requirements, and building codes inside out.
Full Design-Build Service
One unified team from concept to keys. Architectural design, engineering, permits, and quality construction — all under one single contract.
Transparent Pricing
No hidden charges or surprise invoices. We provide detailed line-item estimates upfront before any construction begins.
4.9★ Google Reviews
Dozens of 5-star ratings from satisfied homeowners across Northern Virginia. Our reputation is built on integrity and craftsmanship.
We Handle All Permits
Local permitting can be stressful. We handle all zoning approvals, architectural submissions, and inspections with local jurisdictions.
Virginia Class A Licensed
Fully licensed, bonded, and insured in Virginia. We build strictly to Virginia Residential Code with comprehensive structural warranties.
HOW IT WORKS
Our Alexandria ADU Construction Process
Building an ADU in Alexandria is seamless when you partner with the right team. Here’s our proven 5-step roadmap from initial concept to turnkey handover.
1
Free Feasibility
We evaluate your Alexandria lot, discuss your design vision, and check zoning setbacks at zero cost.
2
Design & 3D Plans
Custom floor plans, photorealistic 3D renderings, and transparent pricing tailored to your property.
3
Permits & Approvals
We prepare engineering packages and manage all City of Alexandria permit submissions seamlessly.
4
Quality Construction
Expert trades build your Alexandria ADU to Virginia code with weekly updates and clean worksites.
5
Turnkey Handover
Final municipal inspection, certificate of occupancy, and walkthrough. Your ADU is ready to enjoy or lease.
ALEXANDRIA COMMUNITIES
Alexandria Neighborhoods We Serve
US Home Design Build builds custom ADUs across all major neighborhoods in the City of Alexandria, VA. Contact us for a free zoning assessment in your area:
Ready to Build Your Alexandria ADU?
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FAQ
Alexandria ADU — Frequently Asked Questions
Everything you need to know before building an accessory dwelling unit in Alexandria, VA.
Are Accessory Dwelling Units (ADUs) legal in Alexandria, VA? +
Yes! The City of Alexandria updated its zoning ordinance to allow both detached backyard ADUs and interior ADUs (basement/garage conversions) on qualifying single-family lots, subject to setback and lot coverage regulations.
How much does it cost to build an ADU in Alexandria? +
ADU costs in Alexandria typically range from $120,000 to $280,000 depending on the type (garage conversion vs. new standalone detached cottage), square footage, site utility hookups, and finish selections.
Do I need a building permit to build an ADU in Alexandria? +
Yes. Every legal ADU requires site plan review, zoning compliance verification, building permits, and trades permits (electrical, plumbing, HVAC) from the City of Alexandria Department of Planning & Zoning. US Home Design Build handles 100% of permit filings on your behalf.
Can I rent out my Alexandria ADU for passive income? +
Yes. Long-term residential leasing is permitted under Alexandria ADU rules, providing homeowners with strong recurring rental cash flow in desirable neighborhoods like Del Ray, Old Town, and Rosemont.
How long does the entire ADU design-build process take? +
The entire process usually takes 4 to 7 months from initial architectural drafting and permit approval through foundation, framing, and final occupancy inspection.
Why choose US Home Design Build for my Alexandria ADU? +
We are local Northern Virginia design-build specialists with over a decade of experience, a 100% permit approval rate, transparent fixed pricing, and a 10-year structural warranty.
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