Expert ADU builder offering detached ADUs, garage conversions & backyard cottages. Structured process: feasibility, permits, construction & final walkthrough. Boost property value, enable multigenerational living & create flexible spaces.
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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.
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Tiny Nooks is a professional ADU builder in Westport, CT, serving Fairfield County. They offer custom ADUs, garage conversions, home offices & pool houses with full project management, quality craftsmanship & on-time delivery.
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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.
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Home Quality Remodeling offers full-service ADU construction in New Jersey, including detached ADUs, garage conversions, in-law suites, and granny flats. They handle design, permitting, and building to boost property value and add flexible living space.
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Adé Real Estate is an ADU contractor serving Jersey City, Newark & New York. They offer zoning checks, permit-ready designs, turn-key builds & financing guidance. ADUs can generate $2,000–$3,500+/month rental income & add $150K–$250K+ in property value.
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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.
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New Hampton Construction builds custom ADUs on Long Island, including in-law suites, guest houses, rental units & home offices. Projects range from $100K–$300K+, take 4–8 months, and may qualify for Plus One ADU Program grants.
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Liamar is a New Jersey contractor building custom garages, ADUs, and accessory structures in Monmouth, Mercer, Ocean, and Burlington counties. Services include permits, foundations, electrical, plumbing, and HVAC — fully code-compliant.
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Cascella and Sons Construction Corp builds home additions and ADUs on Long Island. As a design-build firm, they manage design and construction under one roof, offering garage conversions, in-law suites, and detached ADUs tailored to Cape, Ranch, and Colonial-style homes.
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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.
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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.
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Huts offers full-service ADU design and build, handling zoning, permits, and construction. Their flexible designs suit in-law suites, rentals, or guest stays. Transparent pricing, cost control, and financing guidance help property owners maximize value.
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PCS Structures builds high-performance ADUs, backyard cottages & granny flats using SIPs technology. Their SHEDI line offers 15x more airtight construction, better energy efficiency, moisture control & faster build times than traditional methods.
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Quality Renovations provides expert Kitchen and Bathroom Remodeling, home additions, and full renovation services with dependable craftsmanship.
read moreNew York City presents a uniquely challenging landscape for ADU contractors. With some of the most stringent zoning laws, landmark preservation requirements, and building codes in the entire United States, constructing an Accessory Dwelling Unit (ADU) in New York, NY demands specialized expertise. The city's dense urban fabric, aging housing stock, and mix of co-ops, condos, and multi-family brownstones create a one-of-a-kind environment that only experienced ADU builders in New York City can successfully navigate.
New York City's zoning resolution governs where and how ADUs can be built. The city has been gradually expanding ADU-friendly policies, particularly through programs like the NYC Basement Apartment Conversion Pilot Program, which allows homeowners in specific boroughs — including Brooklyn, Queens, and Staten Island — to legally convert basement and cellar units into safe, habitable ADUs. Key regulatory considerations include:
Hiring the right ADU contractor in New York City is critical to a successful project. The best contractors will have direct experience working with the NYC Department of Buildings (DOB), pulling permits, filing plans with a licensed architect or engineer, and passing all required inspections. Look for contractors who are:
Building an ADU in New York City is a significant investment, with costs typically ranging from $150,000 to $400,000 or more depending on the scope, location, and type of unit. However, given NYC's extremely high rental demand and property values, a well-constructed ADU can generate substantial rental income and significantly increase property value. New York City ADU contractors who understand both the technical and financial dimensions of these projects are invaluable partners for homeowners looking to maximize their real estate investment.