Your NYC ADU Construction Partner
We Turn Underused Space Into Homes—and Income
New York City just made history. The "City of Yes" zoning changes have finally made it legal to build Accessory Dwelling Units (ADUs)—basement apartments, backyard cottages, garage conversions, and attic studios—on hundreds of thousands of properties across the five boroughs.
But knowing the law exists isn't the same as knowing how to build.
That's where we come in.
What We Do
We are a NYC-based construction company specializing exclusively in ADU conversions and new builds. We focus on one thing: helping homeowners like you unlock the hidden potential of their property.
Whether you want to:
Convert a dark, damp basement into a bright, legal rental unit
Build a detached backyard cottage for an aging parent or adult child
Transform an unused garage into an income-producing studio
Finish an attic into a separate living space
…we handle everything from the initial feasibility assessment to the final Certificate of Occupancy.
ADU NYC helps New Yorkers add accessory dwelling units (ADUs) that increase rental income, expand living space, and boost property value. We design, permit, and build customized ADUs tailored to your lot, zoning, and budget. Our team manages every step—site assessment, plans, permits, utility coordination, construction, and final inspections—so you avoid delays and costly surprises.
We can also guide you to financing resources, including programs that offer 0% interest financing and grants that do not have to be repaid. Whether you qualify for low-interest loans, tax incentives, or direct grant assistance, we’ll identify options that reduce your upfront costs and improve project feasibility.
Why choose ADU NYC
Comprehensive service: design, permitting, construction, and project management.
Local expertise: deep knowledge of NYC zoning, building codes, and agency processes.
Financing support: help locating 0% interest programs, forgivable grants, and other incentives.
Customized solutions: ADUs designed to match neighborhood character, maximize usable space, and meet your goals.
Typical ADU uses
Rental income unit to offset mortgage or generate passive income
Home office, studio, or guest suite to support changing household needs
Housing for family members or caregiving arrangements
Next steps
Schedule a site evaluation and feasibility review.
We’ll prepare a preliminary design and cost estimate.
We’ll identify relevant financing and grant programs and help with applications.
Proceed to permitting and construction with a dedicated project manager.
Contact ADU NYC to explore how an ADU can work for your property and to learn about 0% financing and grant opportunities that lower or eliminate your upfront costs.
Why We Built This Company
We saw the same problem everywhere we looked: NYC homeowners were sitting on thousands of square feet of unused basement, garage, and backyard space—space that could be generating rental income, housing family members, or increasing property value.
But the rules were a maze. Zoning. Flood maps. Setback requirements. Historic district restrictions. Owner occupancy affidavits. The Plus One ADU financing program. The city's pre-approved design library.
Most contractors don't understand these rules. Most homeowners don't have time to learn them.
So we did the work for you. We studied the 2026 ADU guidelines inside and out. We partnered with architects who specialize in pre-approved NYC plans. We built relationships with the Restored Homes HDFC team to help our clients navigate the $395,000 Plus One ADU grant and loan program.
Now, we're the go-to builder for homeowners who want to build right, build fast, and build legally.
Ready to Create Home Equity?
Submit the form below and let’s map out a breakthrough strategy for your ADU goals.