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MLS ID KEY951712Last updated Sep 18, 2026

Mixed Use

70 Park Avenue

Active · Islip · Suffolk County, NY 11706

Asking price$1,400,000Request a Showing
Year built
1925
Est. monthly taxes
$1,761.31
Property gallery0 / 44
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About this home

This offering features three structures on one deeded lot in the heart of Bay Shore’s Business District. Seventy Park Ave is a 2,600 sq ft commercial building with a current CO allowing the first floor apartment to be used as a Personal Service business and residence, and the second floor as a separate apartment. The current owner is using both floors as a one family residence with a Personal Service business. The property offers parking for 5 to 7 vehicles and includes many updates throughout including the kitchen, three full bathrooms, and a full roof replacement completed approximately six years ago. Additional building features include natural gas hook up in house for cooking, an oil heating system and exterior cellar access to a full unfinished basement. The property is connected to sewers and public water, has commercial dumpster service for rubbish removal, and contains three electrical meters: two residential panels for the first and second floors and one commercial panel servicing the basement and garage. There is also a 400 sq ft detached two car garage and an additional 1100 sq ft building at 1636 and 1636A Union Blvd, CO’d as a legal two family dwelling with a studio and a one bedroom apartment. These units are separately metered for electric, with the studio operating on electric heat and the one bedroom having its own gas heating system. Both units are currently vacant. The property presents an opportunity to reposition multiple units at once, resolve outstanding violations, and capitalize on strong rental demand for studio, one bedroom, and two bedroom apartments in the area. With flexible layouts, on site parking, and significant upside through renovation and potential expansion, this asset is well suited for investors seeking value add potential and long term income growth.

Listing snapshot

Days on site
59 days
Listed on MLS
Jan 14, 2026
Annual property tax (MLS)
$21,135.66
Tax year
2025
Listing brokerage
Signature Premier Properties
MLS ID
KEY951712
Last updated
Sep 18, 2026

General features

Property type
Mixed Use
Year built
1925
Parking
Driveway, Garage
Water source
Public
Sewer
Public Sewer
Utilities
Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected

Interior features

Basement
Bilco Door(s), Storage Space, Unfinished
Heating
Baseboard, Oil
Cooling
None
Appliances
Dishwasher, Exhaust Fan, Freezer, Gas Cooktop, Oven, Refrigerator, Stainless Steel Appliance(s)
Flooring
Carpet, Hardwood, Tile

Exterior features

Construction materials
Brick, Stucco

Recent activity

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

Location

Islip · Suffolk County, NY 11706Show interactive map
70 Park Avenue

Islip · Suffolk County, NY 11706

Google Maps directions

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