Accessory dwelling unit companies

Looking for accessory dwelling unit companies in New York, NY? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve New York and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

ADU companies offer end-to-end solutions, often handling everything from the first sketch to the final walk-through. You need these companies if you prefer a streamlined experience where one firm takes responsibility for design, permitting, and construction. They are ideal for homeowners who want to minimize the stress of managing multiple vendors and prefer a turnkey approach to adding a secondary residence to their property.

Frequently asked in New York

What are the disadvantages of ADUs in New York?

In a crowded city like New York, disadvantages can include navigating complex zoning laws and potential impacts on existing parking. You might also face challenges with utility hookups in older buildings. It's important to consider the specific site conditions and local ordinances before proceeding.

How much does an ADU cost in New York?

The cost of an ADU in New York varies greatly depending on the size, materials, and specific location within the boroughs. Factors like site preparation, foundation work, and the complexity of plumbing and electrical installations all play a role. Getting a personalized quote is the best way to understand the investment.

What are the rules for ADUs in New York?

New York City has specific regulations for Accessory Dwelling Units, often referred to as "accessory apartments." These rules dictate lot coverage, setbacks, and requirements for existing structures. Understanding these can be complex, especially in diverse neighborhoods like Manhattan or Queens.

Is an ADU allowed in New York?

Yes, Accessory Dwelling Units are permitted in New York under certain conditions and zoning regulations. The city has been working to streamline the process for creating these units to address housing needs. However, specific requirements can vary by borough and zoning district.

Can I build an ADU on my property in New York?

Whether you can build an ADU on your New York property depends on your specific zoning district and lot characteristics. Factors like lot size, existing building footprint, and local ordinances will determine feasibility. Consulting with a professional is the first step to confirming eligibility.

Also serving nearby: Jersey City · Newark · Elizabeth · Clifton · Yonkers

All cities in New York →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

8,258,035residents

27,484per sq mile

8ZIP codes served

Serving all of New York — population 8,258,035; about 27,484 residents per square mile across 300.5 sq mi. ZIP codes covered include 10001, 10002, 10003, 10004, 10005, 10006, 10007, 10008.

Neighborhoods served in New York: Brooklyn Heights, Upper East Side, Harlem, Astoria, Greenwich Village, Flushing — and every surrounding area.