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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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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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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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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Trusted Connecticut ADU builder offering custom, modular & prefab accessory dwelling units. Energy-efficient designs, full permitting support & streamlined build process. Expert navigation of CT zoning laws including Public Act 21-29.
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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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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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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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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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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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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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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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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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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+.
read moreBrooklyn is one of the most densely populated urban areas in the United States, with over 2.7 million residents packed into approximately 71 square miles. This unique characteristic makes Accessory Dwelling Units (ADUs) an increasingly popular solution for homeowners looking to maximize their property's potential. Whether you're looking to create a basement apartment, a garage conversion, or a backyard cottage, finding experienced ADU contractors in Brooklyn, NY is essential to navigating the borough's complex building landscape.
Brooklyn falls under New York City's Department of Buildings (DOB) jurisdiction, which means ADU projects must comply with the NYC Zoning Resolution and the New York City Building Code. Most residential areas in Brooklyn are zoned R1 through R10, and the type of ADU you can build largely depends on your specific zoning district. In 2022, New York State passed legislation making it easier to legalize basement and cellar apartments, which is particularly relevant for Brooklyn's large stock of brownstones and row houses. Skilled Brooklyn ADU contractors must be well-versed in these evolving regulations to ensure your project receives proper permits and approvals.
Given Brooklyn's unique housing stock, the most common ADU types in the borough include:
Hiring the right ADU contractor in Brooklyn can make or break your project. The best contractors will have extensive experience working within New York City's rigorous permitting process and a strong understanding of local building codes. Look for contractors who are:
Due to Brooklyn's high cost of living and labor market, ADU construction costs in the borough tend to be higher than national averages. Homeowners can typically expect to spend between $150,000 and $400,000 depending on the ADU type, size, and scope of work. However, a well-built ADU in Brooklyn can generate significant rental income, often ranging from $2,000 to $4,500 per month, making it a worthwhile long-term investment. Partnering with a reputable Brooklyn ADU contractor ensures your project is completed efficiently, legally, and to the highest standards.