Accessory dwelling unit companies

Looking for accessory dwelling unit companies in Yonkers, NY? Call AccessoryDwellingUnit Experts for a contact a provider — no obligation. Licensed adu builders serve Yonkers 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 is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.

About this service

These companies provide end-to-end management for property owners looking to add a secondary unit. They typically offer a mix of design, permitting, and construction management services to streamline the project. You need to hire a company when you want a structured, professional approach to the entire build process rather than managing individual subcontractors yourself. They help ensure your unit is built to code, on time, and aligned with your budget goals.

Frequently asked in Yonkers

What are the disadvantages of ADUs in Yonkers?

Some disadvantages include potential impacts on your existing yard space and increased utility usage. There can also be zoning restrictions to consider, even with the state's new laws. Understanding these potential drawbacks early on is important for making an informed decision about your Yonkers property.

How much does an ADU cost in New York?

What are the rules for ADUs in New York?

New York State has recently updated laws to encourage ADU development, often streamlining the approval process. However, local municipalities like Yonkers still have specific requirements regarding setbacks, lot coverage, and design. A local expert can clarify these rules for your specific situation.

Is an ADU allowed in Yonkers?

Yes, ADUs are generally permitted in Yonkers, especially with the state's push to increase housing options. Specific regulations regarding size, placement, and design still apply. We can help you understand exactly what's allowed on your lot.

What permits are needed for an ADU in Yonkers?

You'll typically need building permits, zoning permits, and possibly plumbing and electrical permits. The exact requirements depend on the scope of your project. The pros we work with are familiar with Yonkers' permitting process and can guide you through it.

Can I build an ADU on my existing lot in Yonkers?

In most cases, yes, you can build an ADU on your existing lot in Yonkers, provided you meet local zoning and building codes. This includes requirements for minimum lot size and setbacks. A site assessment will confirm feasibility for your specific property.

Also serving nearby: Paterson · Clifton · Jersey City · Stamford · New York

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

Service area details

207,657residents

11,532per sq mile

6ZIP codes served

Serving all of Yonkers — population 207,657; about 11,532 residents per square mile across 18.0 sq mi. ZIP codes covered include 10701, 10702, 10703, 10704, 10705, 10710.

Neighborhoods served in Yonkers: Downtown Yonkers, Crestwood, Park Hill, Getty Square, Nepperhan — and every surrounding area.