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    Iselin, NJ
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    Iselin, NJ Duplexes for Sale

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    Duplex with Full Basement
    Updated: Aug 4
    Duplex with Full Basement

    237 Middlesex Avenue, Iselin, NJ 08830

    $729,999
    2,288 sqft 0.22 AC lot
    Two‑unit duplex with 2,288 square feet of property size
    First‑floor unit has 3 bedrooms, 3 full bathrooms, and a full basement
    Second‑floor unit includes 2 bedrooms and 1 full bathroom
    Private driveways serve the left and right sides of the property
    0.2204‑acre lot in Iselin, NJ
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    Two-Story Duplex with Private Driveways
    Updated: Aug 7
    Two-Story Duplex with Private Driveways

    Iselin, NJ 08830

    $729,999
    0.22 AC lot
    Two‑story duplex with two residential units
    First‑floor unit offers 3 bedrooms, 3 full bathrooms, a full basement, and a private left‑side driveway
    Second‑floor unit includes 2 bedrooms, 1 full bathroom, and a private right‑side driveway
    Built in 1955 on a 0.2204‑acre lot
    Forced‑air heating and central air
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    Two-Unit Duplex with Basement
    Two-Unit Duplex with Basement

    237 Middlesex Ave, Iselin, NJ 08830

    $729,999

    Income-producing residential property with separate driveways and a flexible two-level layout.

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    See what stands out in Middlesex County

    We check every for-sale listing in the county against comparable properties across the country. Most price about where you would expect. A few are worth a second look.

    We check every listing here. A few are worth a second look.

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    Two-Unit Duplex with Basement
    Two-Unit Duplex with Basement

    69 S Harrison Avenue, Iselin, NJ 08830

    $731,500

    New windows, unfinished lower-level space, and a fenced backyard add practical flexibility.

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    Based on your search, we've compiled 8 Potential Opportunities for your consideration. Besides 4 Active listings in Iselin, NJ, we suggest exploring several alternatives: 4 properties in Nearby Cities

    Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    Duplex with New Roof
    Duplex with New Roof

    1892 oak tree Road, Edison, NJ 08820

    $765,000
    0.37 AC lot

    Two two-bedroom units with separate water-furnace heating, attached garage parking, and a private backyard in Edison.

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    Duplex with Finished Walkout Storage
    Duplex with Finished Walkout Storage

    161 W Inman Ave, Rahway, NJ 07065

    $699,900
    0.16 AC lot

    Two occupied residences provide separate systems, laundry hookups, and dedicated basement access.

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    Duplex with Partially Finished Basement
    Duplex with Partially Finished Basement

    139 Coddington St, Rahway, NJ 07065

    $699,000
    0.10 AC lot

    Two residential units provide separate utilities and flexible occupancy options.

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    Two-Unit Residential Income Duplex
    Two-Unit Residential Income Duplex

    1892 Oak Tree Road, Edison, NJ 08820

    $765,000

    Two-unit multifamily duplex with updated roof, two water furnaces, and month-to-month tenants.

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    Iselin, NJ Duplexes Market Trends and Statistics

    Explore 4 duplexes for sale in Iselin, NJ, showcased through 4 active listings on our real estate platform. These investment opportunities span a total of 2,288 square feet of properties for sale, with an estimated market value of $2,921,497.

    Sale prices for duplexes in Iselin, NJ start at $729,999, averaging $730,374, and reaching up to $731,500 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Duplexes 4

    Demographics Overview

    Population 19K
    Population Growth (5Y) +6.8%
    Median Household Income $112,615
    College Educated 81.3%

    High-Yield Neighborhoods for Investment

    Identify Iselin submarkets with the highest inventory density on the market and evaluate the average listing prices of real estate assets

    Neighborhood Average Price
    08830 $730.4K

    Taxes & Financing

    Average Loan-to-Value 65.0%

    Listings Trend

    New vs delisted commercial listings in Middlesex County

    New Delisted

    Total CRE Inventory on Market (SF)

    Average Property Price per SF

    For-sale pricing trends across core commercial property types in Middlesex County

    Residential Income

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