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Renovated Multi-Tenant Office Building
For Sale
$800,000

128 Carleton Avenue, East Islip, NY 11730

Commercial Sale, East Islip, NY

Property SizeContact for details
Lot Size0.28 Acres
Days on Market231

Property Features for 128 Carleton Avenue

General Information

Property type Commercial Sale
Property subtype Office
Zoning GMT
Directions Carleton Avenue across street from Irish Coffee Pub.
Standard status Active
APN 0500-346-00-01-00-079-003
Lot size 0.28 Acres

Taxes and HOA fees

Tax Year 2026
Tax Annual Amount 18271

Utilities

Sewer type Public Sewer
Heating system Natural Gas, Hot Water(Heating)
Cooling system Wall/Window Unit(s), Window Unit(s), Ductless
Water source Public

Amenities

conference room
kitchenette
bathrooms
detached garage

Building Details

Floors in Building 2
Number of units 8
Building materials Frame, Vinyl Siding
Listing Agency: Jones Hollow Realty Group Inc
Listed By: Brad Wilson AHWD SFR
Added: Feb 16 Changed: Sep 18 Last Checked: Oct 5 at 7:06AM
MLS# 961392

Copyright © 2026 OneKey MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

Investment Insights

Based on property information with market context.

This office building is configured for multiple occupants with 7 private offices, a conference room, 2 bathrooms, and a kitchenette. The property also includes a detached garage that provides storage or additional functional space. A comprehensive renovation completed in 2020 addressed the HVAC system, exterior siding, selected windows, common areas, kitchenette, bathrooms, and conference room. The building is 100% occupied and served by public water and public sewer.

Located at 128 Carleton Avenue in East Islip, the property offers a professional office setting with frame construction and vinyl siding. Heating is provided by hot water and natural gas, while cooling includes ductless and wall/window units. Its multi-tenant layout supports separate office users within a single commercial building.

Key Highlights

  • 7 private offices plus a spacious conference room
  • 2 renovated bathrooms and a modern kitchenette
  • Detached garage for storage or expanded use

Property Analytics

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Current Use

Elaine Camlet, Esq. ... Law Firm Frans Barbershop Barber Shop Cory J. Covert, ... Law Firm Tom's Tax Prep Accounting Firm Therapeutic Escape Massage ... Alternative Medicine Practice

Suggested Use

Top Pick Auto Parts Store Parking Lot & Garage Kitchen & Bath Showroom Daycare Center Hotel & Motel Garden Center

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

7
Office units
100%
Occupancy
Multi-tenant
Tenancy

Location Intelligence

Trade Area within ½ mile

534
Businesses Nearby

Demographics for 11730, NY

14,523
Population
5,230
Households
2.8
Avg Household Size
43
Median Age
39%
College-Educated
95%
High-School Grad
4.5 sq mi
ZIP Area
3,227
Density / Sq Mi
$146,190
Median Household Income
$64,934
Median Earnings
$2,508
Median Rent
$577,600
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Office in Northeast region

13.1% 2019
15.4% 2020
17.6% 2021
19.1% 2022
20.2% 2023
20.9% 2024
19.9% 2025
Rey
Questions? Ask Rey
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Frequently Asked Questions

What type of property is this?
Office building - Fully occupied office property with updated shared amenities, a detached storage garage, and flexible multi-tenant configuration.
Where is this office building located?
The property is located at 128 Carleton Avenue East Islip, NY.
What is the asking price?
The asking price for this property is $800,000.
What are key features of this property?
This property features: 7 private offices plus a spacious conference room; 2 renovated bathrooms and a modern kitchenette; Detached garage for storage or expanded use
More about this property
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