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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, or Converted ADUs are permitted in Beacon.
Parking:
2025 Update: Parking space requirement removed.
Size:
The accessory apartment floor area can not exceed 1000 square feet.
Rental Use:
Accessory Apartments can't be used as short-term rentals.
Other Requirements:
Owner occupancy is required. At the time of the application for a building permit for an ADU, the owner is required to submit an affidavit stating that the owner resides on the premises.
Contact Information:
City of Beacon’s Building Department: City of Beacon Building Department
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, or Converted ADUs are permitted in Carmel.
Parking:
At least one additional off-street parking space shall be provided for an accessory apartment, and maximum two.
Size:
The accessory apartment floor area can not exceed 900 square feet and it can't have more than two bedrooms.
Rental Use:
Accessory Apartments can be used as short-term and long-term rentals.
Other Requirements:
Owner occupancy is required. At the time of the application for a building permit for an ADU, the owner is required to submit an affidavit stating that the owner resides on the premises.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Catskill.
Parking:
There are no additional parking requirements.
Size:
The accessory apartment floor area can not exceed 800 square feet.
Rental Use:
Accessory apartments can be used for short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots within an R-1 and B-1 zoning area.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Cold Spring.
Parking:
At least two additional off-street parking spaces shall be provided for an accessory apartment.
Size:
The accessory apartment floor area can not exceed 600 square feet.
Rental Use:
Accessory apartments can be used for short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
There can be only a maximum of three residents at a time in the Accessory Dwelling Unit.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Croton on Hudson.
Parking:
At least three additional off-street parking spaces shall be provided for an accessory apartment.
Size:
The accessory apartment floor area can not exceed 750 square feet.
Rental Use:
Accessory Apartments can be used as short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
No accessory apartments are permitted on properties with a professional office unit.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Dobbs Ferry.
Parking:
There is no additional parking requirement.
Size:
The accessory apartment floor area can not exceed 800 square feet or 33% of the primary dwelling's floor area, whichever is less.
Rental Use:
Accessory Apartments can be used as short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
ADU must be shorter than the primary dwelling and it cannot be located in front of the main house.
Newly created entrances must be located on the side or rear facade.Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots within R-2, B-1, B-2 zoning districts.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted.
Parking:
At least one additional off-street parking space shall be provided for an accessory apartment.
Size:
The accessory apartment floor area can not exceed 600 square feet.
Rental Use:
Accessory apartments can be used for short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
For R-2 zoning areas, the main dwelling must be older than 1983, and a minimum of 2400 sqft.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots with more than 2,000 square feet of lot area.
Types of ADUs:
Attached or Converted ADUs are permitted in Hastings on Hudson.
Parking:
At least one additional off-street parking space shall be provided for an accessory apartment.
Size:
The accessory apartment floor area can not exceed 33% of the main dwelling floor area.
Rental Use:
Accessory Apartments can't be used as short-term rentals.
Other Requirements:
Owner occupancy is required.
A public hearing is required.
There can be a maximum of two bedrooms.
There are specific yard specifications.
The maximum roof height cannot exceed 15 feet.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Hyde Park.
Parking:
There are no parking requirements for ADUs in Hyde Park.
Size:
The accessory apartment floor area can not exceed 35% of the primary dwelling's floor area.
Rental Use:
Accessory Apartments can be used as short-term and long-term rentals.
Other Requirements:
Owner occupancy is required in one of the dwelling units.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Kingston.
Parking:
No additional off street parking is required for an ADU. If the construction of the ADU requires removal of an existing off street parking space, it must be replaced on site within zoning laws. An additional on-site parking may be substituted if there is sufficient space on the curb, removing the existing ramp and replacing it with curb.
Size:
The accessory apartment floor area can not exceed 50% of the Single Family Dwelling or 650 square feet.
Rental Use:
Accessory Apartments must be rented for a minimum of 90 days.
Other Requirements:
Owner occupancy is required. ADU may not be sold as separate from the main dwelling.
ADU Height is restricted by a maximum of 25 ft or height of the primary dwelling (whichever is less).
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots, maintaining zoning requirements.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Lloyd.
Parking:
There are no additional parking requirements.
Size:
The accessory apartment floor area can not exceed 650 square feet.
Rental Use:
Accessory apartments can be used for short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
There can be a maximum of one bedroom or a studio.
Contract Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots within residential, business, and interchange business zoning areas.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Newburgh.
Parking:
At least one off-street parking space must be provided for the accessory apartment in addition to the minimum two per dwelling unit required for single-family and two-family dwellings.
Size:
The accessory apartment floor area can not exceed 700 square feet and can't have more than two bedrooms.
Rental Use:
Accessory Apartments can be used as short-term and long-term rentals.
Other Requirements:
Owner occupancy is required. ADU project needs to fit into one of the following criteria: provide senior housing, increase affordable housing stock, or improve the feasibility of maintaining existing large homes.
ADU may not minimize front yard setback.
Maximum of 5 resident persons in ADU.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in New Paltz.
Parking:
Total parking must equal 1.5x the total number of dwelling units.
Size:
The accessory apartment floor area can not exceed 900 square feet or 45% of the primary dwelling's floor area, whichever is less.
Rental Use:
Accessory Apartments can be used as short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
Newly created entrances must be located on the side or rear facade.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in North Salem.
Parking:
At least two additional off-street parking spaces shall be provided for an accessory apartment.
Size:
The accessory apartment floor area can not exceed 750 square feet.
Rental Use:
Accessory apartments can be used for short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
A second ADU is allowed if lot size permits and the certificate of occupancy is met, the main dwelling must be a 1500 sq.ft. minimum.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted in residential zones. Recent zoning changes have been proposed to streamline the approval process for ADUs and expand opportunities for their creation.
Types of ADUs:
Attached and Detached.
Size:
The structure should not be constructed in front of nor be of a height greater than the principal building, nor be erected within 10 feet of side and rear property lines, operative septic tanks and leach fields. The floor area of the structure should not exceed 35% of the existing floor area of the one-family dwelling. Minimum floor area should be no less than 400 square feet.
Other Requirements:
Owner occupancy is required. At the time of the application for a building permit for an ADU, the owner is required to submit an affidavit stating that the owner resides on the premises.
Code/Zoning Resource:
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Rhineback.
Parking:
Additional off-street parking space shall be provided for an accessory apartment as required by zoning for the overall dwelling.
Size:
The accessory apartment floor area can not exceed 750 square feet.
Rental Use:
Accessory Apartments can be used as short-term and long-term rentals.
Other Requirements:
Owner occupancy is required.
Parking is not allowed in the front yard.
Contact Information:
• Village of Rhinebeck Building Department: villageofrhinebeck.org/building
• Town of Rhinebeck Building Department: rhinebeckny.gov/building-department.html
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Where are ADUs allowed:
Accessory Apartments are allowed in all residential districts except district I in Saugerties, New York. There is a 1-acre minimum lot size requirement for adding an Accessory Apartment on your property.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in the Saugerties.
Parking:
At least one additional off-street parking space shall be provided for the accessory apartment. In no case shall there be parking space for less than a total of three cars on the property.
Size:
The minimum floor area for an accessory apartment shall be 350 square feet, but in no case shall it exceed 25% of the habitable area of the building in which it is located or 600 square feet, whichever is less. The accessory apartment shall have no more than one bedroom.
Rental Use:
Permitted
Other Requirements:
Prior to the issuance of a building permit for the establishment of an accessory apartment in a principal dwelling, approval of the proposed method of water supply and sewage disposal shall be obtained.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted only in single family lots or new lots with more than 15,000 square feet of lot area.
Types of ADUs:
Attached, Detached, or Converted ADUs are permitted in Tarrytown.
Parking:
At least one additional off-street parking space shall be provided for an accessory apartment.
Size:
The accessory apartment floor area can not exceed 1000 square feet or 50% of the main house's floor area.
Rental Use:
Accessory Apartments must be rented at minimum for a 6 month lease.
Other Requirements:
Owner occupancy is required.
Contact Information:
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Where are ADUs allowed:
ADUs are permitted in residential zones.
Types of ADUs:
Attached, and Detached.
Size:
The accessory apartment floor area can not exceed 1,500 square feet. Minimum size is no less than 200 square feet.
Rental Use:
Single ADU is prohibited from being used as a short-term rental. However when there are two ADUs, only one may be used as a short-term rental, and all other short-term rental regulations must be met.
Other Requirements:
The town offers incentives for below-market housing, which may include allowances for additional ADUs. Recent zoning changes allow clustered developments while preserving half the land as open space.
Contact Information:
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Where are ADUs allowed:
No more than two accessory buildings shall be permitted in any one-family residence district.
Size:
No such accessory building shall have a footprint greater than 600 square feet nor a height in excess of 20 feet, except that for lots of 40,000 square feet or larger, one of the two accessory buildings may exceed 600 square feet to a maximum of 1,200 square feet
Zoning/ Code Reference:
Contact Information:
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