3 Best ADU Builders in Staten Island, New York

Verified ADU contractors and builders in Staten Island, NY

Frequently Asked Questions — ADU Builders in Staten Island

How much does it cost to hire an ADU builder in Staten Island?

ADU construction costs in Staten Island, New York vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Staten Island to get accurate quotes for your specific project.

How long does it take to build an ADU in Staten Island?

In Staten Island, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on New York local regulations. Prefab and modular ADUs often have faster timelines than site-built units.

Do I need a permit to build an ADU in Staten Island?

Yes, a building permit is required for ADU construction in Staten Island, New York. Your ADU builder will typically handle the permit application as part of their service. New York has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.

What types of ADUs can be built in Staten Island?

Common ADU types in Staten Island include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Staten Island ADU builder can advise on what's allowed on your specific parcel.