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    25 1St St Islip, NY 11751

    Sponsored
    For Sale
    Pending
    $599,999

    Duplex - Islip, NY

    Type:Duplex
    Property size:
    1,542 SF
    Lot size:
    0.16 Acres
    Days on Market:
    72
    Last Refresh:
    Jan 8 at 2:06 pm

    Property Features for 25 1St St

    General Information

    Property type
    Residential Multi Family
    Property subtype
    Duplex
    Standard status
    Pending
    Security features
    Smoke Detector(s)
    Rooms
    Basement, Bathroom 1, Bathroom 2, Bedroom 1, Bedroom 2
    Bedrooms
    2
    Bathrooms
    2
    APN
    0500-396-00-03-00-074-000
    Parking
    2
    Parking features
    Driveway, Garage
    Interior features
    First Floor Bedroom, First Floor Full Bath, Ceiling Fan(s), Crown Molding, Eat-in Kitchen, Entrance Foyer, Formal Dining, Original Details, Pantry, Quartz/Quartzite Counters, Recessed Lighting
    Exterior features
    Fencing
    Fencing
    Fenced
    Basement Y/N
    1
    Size
    1,542 SF
    Lot size
    0.16 Acres

    Building Details

    Year built
    1900
    Number of units
    2
    Flooring type
    Hardwood, Vinyl
    Building materials
    Vinyl Siding
    Architectural style
    Other

    Signature Premier Properties (631) 673-3700 [email protected]

    Listing agent Rosemary Marino (516) 799-7100 License #10401325369

    Listing date Oct 29, 2025

    MLS# 903186 Listing URL

    Copyright © 2025 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.

    Overview

    Updated Duplex in Islip, NY

    This updated two-family home is located in Islip, New York. The property features two 1-bedroom apartments, each with private entrances through an enclosed front porch. The home offers income potential, a spacious backyard, a two-car garage with a loft, and a private driveway. The first-floor unit is bright and spacious, featuring hardwood floors and a new eat-in kitchen with shaker cabinets, stainless steel appliances, a pantry, and a washer hookup. The living room includes an out-cove suitable for a home office. An updated full bath and a bedroom complete the freshly painted first-floor apartment. The second-floor unit has updated luxury vinyl floors, oak cabinets, and an updated bathroom. Large windows provide natural light. The home has oil heat with two above-ground oil tanks, and gas is available in the home. An unfinished basement provides storage space. The property is situated on a lot of 0.16 acres. The building size is 1542 square feet. The location is near transportation, restaurants, and shopping.
    Property Profile Insight Report Location Intelligence

    Current Use by Public Records

    Duplexes

    Suggested Use

    Realty agency Law Firm Restaurant Spa & Massage Dental Office Hair Salon Nail Salon Clothing Store Building Supply Gym & Fitness

    Zoning and permitted uses should be independently verified with local authorities.

    Location Insight

    • Map
    • Local Demand
    City
    Islip
    County
    Suffolk
    State
    New York
    Longitude
    -73.2150107
    Latitude
    40.7248993

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    FAQs

    What type of property is this?
    Duplex - Updated two-family home in Islip with income potential.
    Where is this duplex located?
    The property is located at 25 1St St Islip, NY.
    What is the asking price?
    The asking price for this property is $599,999.
    What are key features of this property?
    This property features: - Two separate 1-bedroom apartments offer income potential.; - Brand new eat-in kitchen with stainless steel appliances and a washer hookup in the first-floor unit.; - Two-car garage with loft and private driveway provides ample parking and storage.
    (516) 514-2206
    Request Owner's contact information
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    Realmo Value Estimation

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.

    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.

    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

    More about this property
    25 1St St Islip, NY 11751
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