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    Bayville, NY Duplexes for Sale

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    Locust Valley, NY Centre Island, NY Lloyd Neck, NY Mill Neck, NY Glen Cove, NY Sea Cliff, NY Syosset, NY Glenwood Landing, NY
    Two-Family Waterfront Residence
    Updated: May 12
    Two-Family Waterfront Residence

    20 Greenwich Avenue, Bayville, NY 11709

    $1,798,000
    0.25 AC lot
    Bayville two‑family home built in 1948 with approx. 3,550 sq. ft. of interior living space on a quarter‑acre beachfront lot
    Offers 5 bedrooms and 3.5 bathrooms across two apartments, providing flexible use for extra income or a multi‑generational setup
    Approx. 80 ft of private deeded beach frontage extending to the mid‑high tide line with beach access and beach front
    Parking for 6 cars, including covered parking for at least 4 vehicles
    Dual central air units plus dual hot water heaters; waterproofed upper‑level boiler room
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    Beachfront Two-Family Home on Sound
    Updated: Jan 3
    Beachfront Two-Family Home on Sound

    19 Pine Lane, Bayville, NY 11709

    $1,399,000
    0.06 AC lot
    Legal 2‑family property on a single lot: 2‑bedroom/2‑bath main home plus a separate 1‑bedroom cottage
    Beachfront on Long Island Sound with access to the beach and outdoor deck/patio features
    180‑degree Long Island Sound views with waterfront location
    Extensive recent improvements: brand‑new electrical system, new appliances, new flooring throughout, 3‑zone gas heat, and new roof on the cottage
    Basement with high ceiling, half‑bath, and outside entrance; structural reinforcing and waterproofing completed during 1‑year renovations
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    Turn Any Listing Into an Investment Snapshot Owner equity, real caprate, demand score for every listing. Go To Analytics Center
    Based on your search, we've compiled 6 Potential Opportunities for your consideration. Besides 2 Active listings in Bayville, NY, 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.

    Two-Family Residence with Detached Garage
    Two-Family Residence with Detached Garage

    22 Locust Avenue, Glen Head, NY 11545

    $975,000
    0.15 AC lot

    Legal two-family home offers two two-bedroom units with separate entrances, updated kitchens and baths, plus a fenced yard.

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    Two-Family Income Property
    Two-Family Income Property

    1 Beverly Road, Glen Cove, NY 11542

    $799,000
    0.20 AC lot

    Two separate units offer bedroom and living space with off-street parking for both residences.

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    Glen Head Two-Family Fixer-Upper
    Glen Head Two-Family Fixer-Upper

    2 Huron Street, Glen Head, NY 11545

    $710,000
    0.13 AC lot

    Two-family fixer-upper in Glen Head, sold as-is.

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    Mixed-Use Building in Downtown Glen Cove
    Mixed-Use Building in Downtown Glen Cove

    63 1/2 Glen St, Glen Cove, NY 11542

    $778,000

    Mixed-use building with commercial unit and two residential apartments.

    View details

    Bayville, NY Duplexes Market Trends and Statistics

    Explore 2 duplexes for sale in Bayville, NY on our real estate platform. These investment opportunities span a total of 0 square feet of properties for sale, with an estimated market value of $3,197,000.

    Sale prices for duplexes in Bayville, NY start at $1,399,000, averaging $1,598,500, and reaching up to $1,798,000 — 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 2
    Short term rental properties 1

    Demographics Overview

    Population 6,744
    Population Growth (5Y) +0.5%
    Median Household Income $143,571
    College Educated 82.8%

    High-Yield Neighborhoods for Investment

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

    Neighborhood Average Price
    11709 $1.6M

    Taxes & Financing

    Average Loan-to-Value 65.0%

    Listings Trend

    New vs delisted commercial listings in Nassau County

    New Delisted

    Total CRE Inventory on Market (SF)

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