ADU Builder in Merrifield, VA

ADU Builder in
Merrifield, VA

Quality Work Honest Pricing Free Estimates
Capitalize on Merrifield’s vibrant growth near the Mosaic District. US Home Design Build is a top-rated ADU builder in Merrifield, VA, creating custom detached backyard cottages, garage apartments, and basement secondary suites.

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200+ADUs Built in NoVA
4.9 ★Google Rating
100%Permit Compliant
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What Our Clients Say

See how we help homeowners across Northern Virginia transform their properties.
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PRASANNA LAD
2 weeks ago
Their crew was professional, efficient, and considerate of our home. We are extremely pleased with the final results.
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Noah Gilmore
2 weeks ago
US Home Design Build did an excellent job with our bathroom remodeling project. The finished bathroom feels like a luxury spa and has significantly improved our daily routine.
The team paid close attention to every detail and kept us informed throughout the renovation. We enjoy spending time in our new kitchen.
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Willie Woods
1 month ago
We chose US Home Design Build for a dining room addition, and they exceeded all of our expectations. The room is elegant and spacious, ideal for hosting family gatherings.
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Lee Christian
1 month ago
Their team maintained excellent communication and delivered on their promises. We would gladly use them again on future projects.
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ISAAC NYAME
2 months ago
US Home Design Build built an In-Law Suite Addition for our family, and we are extremely pleased with the results. The space is cozy, private, and tastefully designed.
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ISAAC DARKO
2 months ago
Their professionalism and workmanship were superb.
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ERIC BUKOR
2 months ago
We recently worked with US Home Design Build on a garage addition, and the process went smoothly from beginning to end.
Each crew member was courteous and knowledgeable. The end result has added enormous value and comfort to our home.
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Louis Adkins
2 months ago
US Home Design Build handled our Kitchen Addition flawlessly. They carefully listened to our ideas and turned them into a functional and visually appealing space.
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gody dion
2 months ago
We had a great experience working with this crew. They were honest, responsive, and paid attention to every detail. The quality of the work exceeded our expectations. We would definitely use them again.
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Xie Dillon-Vassell
4 months ago
Excellent service. Took care of every need. Basement egress and kitchenette looks fantastic. Highly recommend.
Photo from customer review
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Lorenzo Andreaa
4 months ago
We hired US Home Design Build for a master suite addition at our home in Fairfax, VA in 2025 and the entire experience was excellent. The team was professional, responsive, and very detail-oriented from start to finish. The quality of work and craftmanship really stands out, and they stayed on schedule while keeping everything organized. If you're looking for reliable design-build contractor in Fairfax, I highly recommend US Home Design Build.
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Jing Pei
6 years ago
Min and his team did a great job with building our home. Everything from the initial consultation phase, to the design phase, to the demolition of the old house, to the entire construction phase were performed with professionalism. We're satisfied with both the value and the final product.
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Mike Cherlow
7 years ago
Min and his teams did a great job, they worked with us every step of the way, and made every effort to make our addition as smooth as possible. They even came for a follow up a year later to make any little fixes after the building settled. Great work!
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Nick DeSantis
7 years ago
Reached out to US Home because they were completing a similar project in our neighborhood. Sean promised to transform our outdated first floor in a total of 3 months, and the team delivered. Scope of work included a bathroom and kitchen remodel, deck with screened in porch, and roof/siding replacement. Min made sure the project stayed on schedule and overages were limited to items we didn't include in the contract. The crew (Dave and Justin) were very accommodating and had a great eye for detail. Bottom line is that they do great work and we'd hire them again!
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Kathy Crandall
7 years ago
Min and his team completed my room addition in 2018. They ran into challenges from the rainy weather, but overcame all obstacles to get things done. I love my new room!
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Negar Ahkami
8 years ago
Extremely pleased with my beautiful bathroom renovation. Min gut renovated a very old upstairs bathroom, shared by our family of 4, so while may have been a small job for him, it was of major importance to us. He accommodated our extremely tight time frame that no other contractors would dare commit to. He accommodated my design ideas and subsequent changes to our design beautifully and offered good design advice when needed. A few things needed to be addressed in the year or two afterwards -- not from fault of Min, resulting from our not following his design/advice about installing a glass wall/door for our bathtub-shower. Min came immediately to address issues and never pointed fingers or asked questions. Min came highly recommended by very discerning friends with high end tastes and homes, who continue to hire Min for more work. I trust Min and would likely hire him again if we decide to do more work.
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Fred Velarde
8 years ago
US Home Design Build proved to be an outstanding choice for my wife and I to custom build a high quality, two story addition (four season sunroom and covered patio) onto our 1968 colonial style home in Fairfax County, Virginia. Our vision for such an addition was to involve the meticulous planning, design and construction of a highly custom, expanded living space, utilizing the finest materials, fixtures and hardware. The design was conceived to appear wholly integrated into the existing architecture of the residence; as if built at the time of the home’s construction. After interviewing a variety of custom builders, we chose US Home Design Build. Simply stated, we were thoroughly impressed with the professionalism and reputation of US Home Design Build, along with their representatives Mr. Sean Brennan and Mr. Min Yi. From the outset, the project proved challenging, yet Min Yi and his crew never failed to provide us with impeccable quality of craftsmanship and a conscientious work ethic. Min would frequently suggest practical improvements to the design, construction and associated hardware of the ongoing project; all at no increase in cost. Min always listened carefully and never failed to satisfy my every concern and stated objective. Even unavoidable delays (associated with third party design and construction of elaborate custom windows and doors) never disrupted the focus, momentum or morale of US Home Design Build. The project was completed flawlessly; on schedule and on budget. My wife and I could not be happier. We now have the four season sunroom and patio of our dreams, thanks to Min and his crew.
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rebeccah wrenn
8 years ago
I would highly recommend this company. They put an addition on our house and it looks like it's always been there. Min is outstanding and was here almost everyday checking to be sure everything was done exactly as we wanted it.
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jackie williams
9 years ago
US Home built our two story addition and we are extremely happy with the outcome of the work. Their crews were very professional and we definitely recommend them.
WHAT WE BUILD

Self-Contained ADU Services in Merrifield, VA

Serving the Mosaic District corridor, Luther Jackson, and Dunn Loring areas, our self-contained ADUs generate strong monthly rental cash flow and provide flexible multi-generational housing.

Detached ADU (Backyard Cottage)

A 100% standalone 2nd home built in your backyard — featuring private kitchen, bath, and utility setups. Ideal for Mosaic District, Luther Jackson & Dunn Loring Area 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 Merrifield lot topography, setback limits, and HOA covenants.

Merrifield Permitting & Zoning

We manage 100% of City of Merrifield Department of Planning & Zoning approvals, lot coverage reviews, building permits, and inspections end-to-end.

ADU construction in Merrifield VA by US Home Design Build
ADU DEFINITION & STANDARDS

What is an ADU — Independent Living vs. Standard Home Addition

An Accessory Dwelling Unit (ADU) in Merrifield is a fully independent, self-contained secondary residential unit located on a primary single-family parcel. Every ADU includes a private exterior entrance, full kitchen or kitchenette, dedicated bathroom, and living area.

The City of Merrifield allows 4 distinct ADU typologies: Detached backyard cottages, attached residential wings, garage conversions, and basement units. We handle 100% of City of Merrifield zoning compliance, setback verification, and building permit filings for complete peace of mind.

Key ADU Benefits for Merrifield Homeowners:

100% Self-Contained Unit: Independent entrance, kitchen, and bathroom facilities
High-Yield Rental Income: Long-term passive monthly rental cash flow in NoVA
100% Merrifield Permit Approval: We manage all Planning & Zoning approvals and inspections
ADU DESIGN & STYLE CONCEPTS

Explore ADU Architectural Styles & Design Concepts for Merrifield, VA

Browse architectural styles, layout concepts, and premium finishes we design and construct for detached backyard cottages, garage conversions, and luxury lower-level suites across Merrifield and Northern Virginia.

Real ADU Project in Merrifield VA
Backyard ADU Cottage

Custom Exterior Design & Elevation

Vaulted ADU Great Room Interior
Interior Architecture

Vaulted Ceiling & Open Living Quarters

ADU Kitchenette and Bath Entry
Kitchen & Bath Suite

Compact Kitchenette & Luxury Bath Entry

WHY US

Why Merrifield Homeowners Choose US Home Design Build

We are dedicated ADU builders with over a decade of hands-on experience across Northern
Virginia communities.

Merrifield ADU Specialists

We know the City of Merrifield'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 Merrifield ADU Construction Process

Building an ADU in Merrifield 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 Merrifield 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 Merrifield permit submissions seamlessly.

4

Quality Construction

Expert trades build your Merrifield 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

Merrifield Neighborhoods We Serve

US Home Design Build builds custom ADUs across all major neighborhoods in the City of Merrifield, VA. Contact us for a free zoning assessment in your area:

📍 Old Town Merrifield📍 Mosaic District📍 Rosemont📍 Beverly Hills📍 Potomac Yard📍 North Ridge📍 Seminary Hill📍 Merrifield West📍 Cameron Station📍 Eisenhower Valley📍 Arlandria📍 Carlyle District📍 Taylor Run

Ready to Build Your Merrifield ADU?

Join hundreds of Northern Virginia homeowners who trust US Home Design
Build. Request your free, no-obligation consultation today.

REMODEL WITH CONFIDENCE
BBB Accredited
EPA Certified
Angie's List A Rating
BuildZoom Top Rated
Google 5-Star Rating
HomeAdvisor Top Rated
NARI Member
FAQ

Merrifield ADU — Frequently Asked Questions

Everything you need to know before building an accessory dwelling unit in Merrifield, VA.

Are Accessory Dwelling Units (ADUs) legal in Merrifield, VA? +

Yes! The City of Merrifield 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 Merrifield? +

ADU costs in Merrifield 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 Merrifield? +

Yes. Every legal ADU requires site plan review, zoning compliance verification, building permits, and trades permits (electrical, plumbing, HVAC) from the City of Merrifield Department of Planning & Zoning. US Home Design Build handles 100% of permit filings on your behalf.

Can I rent out my Merrifield ADU for passive income? +

Yes. Long-term residential leasing is permitted under Merrifield ADU rules, providing homeowners with strong recurring rental cash flow in desirable neighborhoods like Mosaic District, Luther Jackson, and Dunn Loring.

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 Merrifield 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.

Get a Free ADU Estimate in Merrifield

Tell us about your project vision. We’ll respond within 24 hours with a comprehensive, no-obligation feasibility assessment.
CONTACT US

Let's Talk About Your Merrifield ADU Project

We serve all Merrifield neighborhoods — Old Town, Mosaic District, Cameron Station, Rosemont, Beverley Hills, North Ridge, and Seminary Hill and surrounding communities.
📞
(703) 202-3520Mon–Sat · 8am–7pm
✉️
project@ushdb.comDirect project inquiry desk
📍
8200 Greensboro Dr, Suite 900McLean, VA 22102 · Serving Merrifield, VA

Start Your Merrifield ADU Today

Free On-Site Consultation · No Obligation

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