Detached ADU in New York

Licensed ADU contractor and construction management firm for NYC homeowners. We handle eligibility, permitting, and the full build across Queens, Brooklyn, Staten Island, and the Bronx.

Westchester Modular Homes Inc. builds modular accessory dwelling units (ADUs) in the Northeast. ADUs are secondary homes on single-family lots requiring permits, a kitchen, bathroom, and private entrance. ADUs can boost property value.

Two Stories Woodworking LLC, Suffolk NY's trusted ADU builder & remodeling contractor. Specializing in kitchen, bathroom, basement remodels, home additions & accessory dwelling units. 350+ homes transformed with expert craftsmanship & stress-free service.

Buffalo Modular offers modular ADU pods priced $15,000–$40,000, delivered in 8 weeks. Uses include home offices, rental units & in-law suites. Features LVP flooring, Andersen windows, steel roof & HVAC. No foundation needed—just a shed permit & gravel pad.

Alec's Construction builds ADUs on Long Island, including garage conversions, basement units & detached cottages. Serving Suffolk County, they handle permits, design & construction. Costs range from $50K–$300K+.

SLK Buildings offers end-to-end ADU financing support in NYC, helping homeowners access HPD grants, HELOCs, construction loans, and cash-out refinancing to fund garage conversions, basement ADUs, and backyard additions.

BuildLabs is a design-build company specializing in ADU construction across all 50 states. They offer custom and pre-approved plans, sustainable materials, and a streamlined 16-week build process covering planning, permitting, and final inspection.

DEN Outdoors offers modern house plans & prefab kits since 2020, including 40+ designs like cabins, A-frames & ADUs. Their 3-step process starts at $999, with building packages from $1,999 or prefab kits from $133K.

Tiny House Titans is a Northeast ADU contractor founded in 2025, offering turn-key services from zoning to final inspection. Units range 200–1,000+ sq ft at $250–$400/sq ft, covering detached ADUs, garage conversions, and JADUs.

Pro Contracting Services offers home additions & room conversions in Buffalo, Amherst, Clarence, Hamburg & beyond. Services include ADUs, in-law suites, sunrooms, second-story additions & room conversions tailored to each property.

ADU Advisory is a NYC-based organization led by former Buildings Commissioner Robert LiMandri, helping property owners plan, permit, fund, and build accessory dwelling units (ADUs) across all five boroughs under City of YES regulations.

Haven ADUs is a Brooklyn-based design and project management firm specializing in accessory dwelling units (ADUs). They guide property owners through feasibility, design, permitting, and construction, serving as a single point of contact throughout.

At SpecLand, we bring expertise and innovation to home renovations, with a focus on maximizing both functionality and value in New York’s unique urban landscape. Whether you’re looking to expand your home, create rental opportunities, or update your living space, our team is dedicated to delivering high-quality, customized solutions that meet your specific needs.

Expert Designers is an NYC-based ADU architect firm helping homeowners convert garages, basements, and backyards into legal accessory dwelling units. Services include design, permit filing, and construction support under NYC's City of Yes zoning updates.

Kondor NYC offers ADU design & installation, including attached, detached units & garage conversions. Ideal for in-law suites, rental income or guest houses. Serving NYC homeowners with expert remodeling solutions on time & within budget.