55 Carleton Avenue East Islip, NY $ 1,800,000
55 Carleton Avenue
$ 1,800,000
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55 Carleton Avenue

East Islip, NY, 11730
$ 1,800,000
Bedrooms-- Baths-- Sq 6,100

Monthly Estimate*

$ 11,230

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Commercial Property for sale in East Islip, NY

for $1,800,000. This 6,100 square foot building was built in 1975 on a lot size of 0.98.

55 Carleton Avenue presents a rare chance to acquire a high-visibility, 0.98-acre commercial property on Carleton Avenue—the main thoroughfare into East Islip. Zoned GSD, this site is ideally suited for office, medical, or veterinary use, offering exceptional exposure and accessibility. This unique opportunity allows for expansion of additional space of up to 11,000 sq. ft. or redevelop the entire site for your new building up to 17,000 ft. sq. Only two miles from the Federal Court House and 2.5 miles from Northwell South Shore University Hospital with easy access from Sunrise Hwy and Southern State Parkway. The East Islip area boasts strong commercial activity and highly desirable demographics, making this a prime location for professional services seeking long-term growth and visibility.

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Commercial Active

Price

$ 1,800,000

Property Type

Commercial

Taxes

$ 29,360

Style

Office

Lot Size

0.98

Year Built

1975

Town/City

East Islip

County/Region

Suffolk

MLS | Web ID

928396

Features
General
Sewer Public Sewer
Heating Forced Air Natural Gas
Cooling Central Air Ductwork
Utilities Cable Available Cable Connected Electricity Connected Natural Gas Connected Phone Connected Sewer Connected Trash Collection Private Water Connected
Appliances None
Zoning GSD
Construction Materials Brick Fiberglass Insulation Stucco
Year Built 1975
Stories Count 1
Property Subtype Office
Tax Year 2025
Parcel Number 0500-346-00-03-00-073-000
Business Type Commercial Medical Professional/Office
County Suffolk County
Property Type Commercial Sale
Building Features Bathrooms Lobby Signage Included
Directions From Sunrise Hwy take exit 46 South Carleton Ave. Continue south for approximately 1 mile crossing Union Blvd 55 Carleton is located on the east side before Main Street. From Main Street go north ap
City Islip
Disclosures Lead Paint M6 Disclosure of Ownership Interest Seller Property Disclosure
Number Of Units Total 8
Property Attached Y/N N
Tax Annual Amount 29360.36
Showing Instructions Call listing and co listing agents for appointments to view property.
Additional Parcels Y/N N
Building Area Units Square Feet
Standard Status Active
Tax Assessed Value 89500
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Interior
Basement Bilco Door(s) Unfinished
Flooring Combination
Total Stories 1
Common Walls 2+ Common Walls
Basement Features Bilco Door(s) Unfinished
Basement (Y/N) Y
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Exterior
Fencing Chain Link
Water Source Public
Total Parking 18
Parking Spaces 18
Building Area Total 6100
Waterfront Y/N N
Road Responsibility Public Maintained Road
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Internal Only
Street Number 1 55
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* Excluded Features
List By
Joseph E. Donaghy

Listing Agent

Marylou Swan Realty Corp

Broker

631-289-5550

Contact

Affordability Calculator

$13,676
Per Month
82%
18%
0%
Monthly Principal & Interest
$11,230
Monthly Property Taxes
$2,447
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
4101131 Elementary School
4101327 Middle School
Unknown High School High School
Pricing History
DatePricePrice ChangeDescription
10/24/2025$1,800,000 Listed Price

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55 Carleton Avenue, East Islip, NY, 11730 is a Commercial Property for sale at $1,800,000 with 6,100 sqft and a lot size of 0.98. 55 Carleton Avenue was built in 1975. The property's zip code is 11730 which is in East Islip, NY