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MLS ID KEY961392Last updated Sep 18, 2026

Office

128 Carleton Avenue

Active · Islip · Suffolk County, NY 11730

Asking price$800,000Request a Showing
Est. monthly taxes
$1,522.62
Property gallery0 / 13
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About this home

Multi-tenant use building. This professional office building with 7 individual offices and detached storage garage, 2 bathrooms, Kitchenette and Conference Room. Building has been completely renovated in 2020 to include heating, cooling, siding, some windows, common areas, kitchenette, bathrooms and conference room. 100% Occupied. Key Features: -GST Zone -7 private offices + spacious conference room -Modern kitchenette and 2 renovated bathrooms -Detached garage for storage or expanded use -Complete 2020 renovation: HVAC, exterior, interiors -Multi-tenant configuration with strong rental potential -High-traffic spot opposite a landmark restaurant

Listing snapshot

Days on site
59 days
Listed on MLS
Mar 3, 2026
Annual property tax (MLS)
$18,271.49
Tax year
2026
Listing brokerage
Jones Hollow Realty Group Inc
MLS ID
KEY961392
Last updated
Sep 18, 2026

General features

Property type
Office
Water source
Public
Sewer
Public Sewer
Utilities
Electricity Connected, Natural Gas Connected, Phone Connected, Sewer Connected, Trash Collection Private, Water Connected

Interior features

Heating
Hot Water, Natural Gas
Cooling
Ductless, Wall/Window Unit(s)

Exterior features

Construction materials
Frame, Vinyl Siding

Recent activity

  1. Listing updated from MLS
  2. First seen on this site
  3. MLS status changed

Location

Islip · Suffolk County, NY 11730Show interactive map
128 Carleton Avenue

Islip · Suffolk County, NY 11730

Google Maps directions

Listing data is supplied by the MLS and may change without notice.