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 spac... read more
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 budg... read more
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 ... read more
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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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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ADU Haus NY builds fully permitted accessory dwelling units in New York City. Founded by Elai Azour, they handle design, DOB filings, and installation, ensuring compliance with NYC's City of Yes initiative and Local Laws 126 and 127.
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NYC's 2024 City of Yes zoning reform introduced ADUs, allowing homeowners to add units in attics, basements, or backyards. Situ Studio contributed a pre-approved 280 sq. ft. detached micro-loft ADU design using Wikihouse's open-source plywood fram... read more
Quality Renovations provides expert Kitchen and Bathroom Remodeling, home additions, and full renovation services with dependable craftsmanship.
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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, a... read more
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 u... read more
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 updat... read more
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 m... read more
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.
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.