21 Bay 3rd Street , Islip, NY 11751

$599,995
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  • 21 Bay 3rd Street , Islip, NY 11751 Main Photo

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BEDS2 BATHS1 full SQUARE FEET1,188 MLS#1023939
STATUSActive PROPERTY TYPEResidential - Single Family SUBDIVISIONSt Marks SCHOOLIslip
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Property Description

Welcome to this charming 1930 Cape Cod located mid-block in the desirable St. Marks neighborhood south of Montauk Highway. Filled with character and thoughtful updates, this home features original built-ins in the kitchen, dining room, and primary bedroom, hardwood floors in the living and dining room, and a beautifully renovated bathroom with classic octagon ceramic tile. Four energy-efficient split units provide heating and air conditioning, complemented by smart thermostats, a new gas heating system, separate hot water heater, and 200-amp electric service. Flexible bonus spaces offer the perfect home office and playroom/Den. Enjoy front and rear in-ground sprinklers, low taxes, and an unbeatable location just minutes from Islip Beach, the marina, parks, shopping, restaurants, and the Long Island Railroad. A wonderful opportunity to own a home that blends timeless charm with today's modern conveniences.

21 Bay 3rd Street | MLS# 1023939

This single family home located at 21 Bay 3rd Street , Islip, NY 11751 is currently listed for sale with an asking price of $599,995. This property was built in 1929 and has 2 bedrooms and 1 full baths with 1188 sq. ft. Bay 3rd Street is located in the St Marks subdivision within the Islip school district. Search St Marks real estate on www.laffey.com today.

Property Features

Property Type: Residential - Single Family
Basement: Yes
Basement: Full, Partially Finished
Cooling: Ductless
Garage: 1
Heating: Hot Water, Natural Gas, Steam
Home Style: Cape Cod
Lot Size: 0.14 Acres
Taxes: $10,711
Year Built: 1929

Amenities

First Floor Full Bath
Entrance Foyer
Formal Dining
Galley Type Kitchen
Low Flow Plumbing Fixtures
Original Details
Washer/Dryer Hookup

Feature Descriptions

Appliances: Convection Oven, Cooktop, Dryer, Gas Cooktop, Gas Oven, Oven, Range, Refrigerator, Washer, Gas Water Heater
Building Area Total: 1436
Days on Site: 26
Exterior: Frame
Flooring: Wood
Formal Dining: Yes
GarageY/N: Yes
Heating Zones: 2
House Faces: South
Included In Taxes: Sewer, Trash
Laundry: Gas Dryer Hookup, In Basement, Inside, Laundry Room, Washer Hookup
Lot Dimensions: 60x106
Lot Features: Back Yard, Front Yard
On Market Date: 2026-08-06
Parcel Number: 0500-397-00-02-00-017-000
Parking Features: Detached, Driveway, Garage, Off Street
Rental Term: Monthly
Rooms Total: 6
Sewer: Public Sewer
Utilities: Electricity Connected, Natural Gas Connected, Sewer Available, Trash Collection Public, Water Connected
Water: Public

Local Schools

High School: Islip High School
Middle School: Islip Middle School
Elementary School: Maud S Sherwood Elementary School
School District: Islip

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Estimated Payment

$ 2,402.91 per month $1,335.33 Principal & Interest $892.58 Property Tax $175.00 Homeowner's Insurance

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Listed By / Shown By

Listing By

Agency Name: Netter Real Estate Inc
Agency Contact: 631-661-5100

Shown By

Agency Title: Laffey Real Estate
Agency Phone: 1-888-289-6902

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information on this site was last updated 09/02/2026. The listing information on this page last changed on 09/02/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Wed 09/02/2026 12:00:03 AM EST) or OneKey MLS (last updated Tue 09/01/2026 11:53:22 PM EST). Real estate listings held by brokerage firms other than Laffey Real Estate may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.

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