Thomas Custom Builders designs & builds ADUs in Virginia, including detached units & in-law suites. Ideal for multigenerational living, rental income, or added property value. Experienced ADU contractor handling full construction, code compliance & planning.
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FineCraft Contractors, Inc. is a general contracting firm with nearly 40 years of experience in home renovations, kitchen remodels, room additions, and more. Known for quality craftsmanship, transparent communication, and on-budget delivery.
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Carbide Construction offers modular additions, ADUs, in-law suites, and ADA-compliant builds in Northern Virginia. Since 2002, they manage design to installation, working with top manufacturers for custom, eco-friendly prefab home solutions.
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Excell Homes is a Northern Virginia ADU builder with 20+ years experience. They offer turnkey accessory dwelling units in Fairfax, Arlington & Alexandria, covering design, permitting & construction under one fixed-price contract.
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Capital Dwelling is a Washington DC-based ADU specialist helping homeowners in the DMV region plan, design, and build accessory dwelling units. Services include feasibility assessments, permitting, architectural design, and construction management.
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Doug Pruett Construction Company, Inc. is a full-service ADU contractor specializing in detached ADUs, garage conversions, backyard cottages, and in-law suites. They manage design, permitting, and construction in-house, ensuring code compliance and efficient project delivery.
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Glickman Design Build offers full-service ADU design and construction, including detached ADUs, granny flats, in-law suites & basement conversions. They handle permits, sustainable building, multigenerational layouts, remodeling, and rental income optimization.
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Montgomery County ADUs: ZTA 19-01 expanded accessory dwelling unit rules, removing bans on detached ADUs on small lots, lifting distance restrictions, easing parking near transit, and allowing garage conversions. Short-term rentals on ADU properties remain prohibited.
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BBCDC Construction & General Contractors specializes in ADU development in Washington, DC, managing zoning compliance, permits, and construction for detached, semi-detached, and attached accessory dwelling units across all residential zones.
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Makara Builders is Washington DC's leading ADU contractor, specializing in detached ADUs, garage conversions, and granny flats across DC, Maryland, and Virginia. Build in 120 days from permit approval and start earning rental income fast.
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DuPaul Construction builds custom ADUs in Martinsburg, Shepherdstown & Charles Town, WV. Offering detached units, garage conversions & in-law suites, they handle permitting, construction & inspections for rental or family living spaces.
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DC basement ADU conversions require owner-occupancy, zoning approval, and code compliance. Costs range $100K–$250K+. Basement Remodeling handles permits, design, and construction in 2–4 months.
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Gold Rhino Modular Homes & Buildings offers innovative solutions, customizable designs, ready-to-ship units, and pre-configured packages for containerized modular homes, multi-unit modular structures, modular container offices, and commercial/industrial modular applications.
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Finecraft Contractors is a Washington D.C.-based general contracting company with 35+ years in residential renovation. Services include kitchen remodels, bathroom upgrades, room additions, and full home gut renovations, backed by transparent project management.
read moreGaithersburg, Maryland is one of the state's most progressive municipalities when it comes to planned development and smart growth initiatives. As part of Montgomery County, Gaithersburg operates under a dual regulatory framework — meaning ADU contractors in Gaithersburg must comply with both the City of Gaithersburg's own zoning ordinances and Montgomery County's broader building codes. This unique structure makes hiring an experienced, locally knowledgeable ADU contractor absolutely essential for homeowners looking to add an accessory dwelling unit to their property.
Gaithersburg is an incorporated city, which means it maintains its own zoning authority separate from Montgomery County. Homeowners and ADU builders in Gaithersburg must work with the City's Department of Planning and Code Administration to obtain the necessary permits. Key regulatory considerations include:
Skilled ADU contractors serving Gaithersburg, MD are experienced in building a variety of accessory dwelling unit types to suit different property layouts and homeowner goals. Common ADU types in the area include:
Working with a local ADU contractor in Gaithersburg means partnering with a professional who understands the city's specific permit timelines, inspection processes, and zoning nuances. Gaithersburg's growing population and proximity to major employment hubs like the I-270 Technology Corridor make ADUs an increasingly attractive investment for homeowners seeking rental income or multigenerational living solutions.
A qualified Gaithersburg ADU contractor will handle everything from initial design and permit applications to final inspections, ensuring your project meets all local and state requirements. With housing demand continuing to rise in Montgomery County, now is an ideal time to explore adding an ADU to your Gaithersburg property.