Attention Shelter Island residents – Plus One ADU grant application is now open – apply HERE! 

Attention East Hampton Residents – Plus One ADU grant application is currently closed. Please check back here for updates.

Accessory Dwelling Units (ADUs) are secondary housing units on a single-family residential lot. ADUs benefit homeowners, renters, and the community by creating more housing options while maintaining the character of single-family residential suburban and rural communities. For homeowners, a code-compliant ADU can provide an additional source of income, flexibility for multi-generational housing, and an increase in property value.

CDLI has been selected by New York State Homes and Community Renewal to administer the new Plus One ADU Program in the Town of Babylon, East Hampton, Shelter Island, and Southampton. The Plus One ADU Program provides a full-service program to support low- and middle-income single-family homeowner occupants who wish to:

• Build a new accessory dwelling unit on their property OR

• Improve an existing ADU that needs to be brought into compliance with code requirements.

Click here for Plus One ADU Program FAQs

Income Guidelines

Program Highlights

Up to $125,000 in grant funding including project management costs per ADU constructed.

Program support includes ADU design, permitting, and construction costs including oversight and closeout.

Homeowner(s) annual income must be below the current Nassau/Suffolk Area Median Income based on family size.[1]

Homeowners and renters must maintain year-round residency and keep the property in good condition and repair for 10 years or until the sale of the property[2]

Requirements

What documents do I need to apply? 

Babylon Residents click here

East Hampton Residents click here

Shelter Island Residents click here 

Southampton Residents click here 

Design Guidelines

Babylon Residents click here

East Hampton Residents click here

Shelter Island Residents click here

Southampton Residents click here

[1] Currently $156,200 for a family of 4.

[2] In the event of the sale of property or non-compliance, the amount of grant funds will be subject to repayment in accordance with a simple annual declining balance, based on the ten-year regulatory period.