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    Portsmouth, NH
    Duplex

    Portsmouth, NH Duplexes for Sale

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    Rye, NH Greenland, NH Hampton, NH North Hampton, NH Stratham, NH Kittery, ME Newington, NH Dover, NH
    Two-Unit Colonial Duplex
    Updated: Jul 21
    Two-Unit Colonial Duplex

    491 Marcy Street, Portsmouth, NH 03801

    $1,325,000
    1,800 sqft 0.07 AC lot
    Legal two‑unit property with an attached two‑room studio apartment
    Approximately 1,800 square feet on 0.07 acres
    Extensive exterior renovations completed in 2025
    Two 100‑amp electrical panels with public water and sewer
    Private‑entry studio with sauna‑equipped bathroom and separate patio
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    Updated Duplex with Studio
    Updated: Aug 21
    Updated Duplex with Studio

    491 Marcy St, Portsmouth, NH 03801

    $1,325,000
    1,800 sqft
    Legal two‑unit property at 491 Marcy St, Portsmouth, NH 03801
    1,800 SF residential property built in 1750
    Flexible layout: single‑family home, side‑by‑side duplex, or home with 2‑room studio apartment
    2025 exterior renovations include new roof, four skylights, windows, siding, and blown‑in insulation
    Studio has a private entrance, private sauna, and separate patio
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    Well-Maintained Two-Unit Duplex
    Well-Maintained Two-Unit Duplex

    648 Kearsarge Way, Portsmouth, NH 03801

    $879,900
    684 sqft

    Duplex features two two-bedroom, one-bath units with recent updates to key systems and interior finishes.

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    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Updated Duplex with Vacant Units
    Updated Duplex with Vacant Units

    184 Echo Ave, Portsmouth, NH 03081

    $990,000
    2,240 sqft

    Two refreshed residences provide immediate occupancy flexibility for investors or owner-occupants.

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    Based on your search, we've compiled 8 Potential Opportunities for your consideration. Besides 4 Active listings in Portsmouth, NH, 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.

    Historic Duplex with In-Law Apartment
    Historic Duplex with In-Law Apartment

    88 York Street, York, ME 03909

    $1,195,000
    3,001 sqft 0.32 AC lot

    1880 residence with a separate two-bedroom apartment, central air, heated garage, and landscaped outdoor areas.

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    Historic Duplex with Attached Apartment
    Historic Duplex with Attached Apartment

    88 York St, York, ME 03909

    $1,195,000
    3,001 sqft

    Distinctive York Village property combining a character-rich primary residence, flexible upper-level living space, and a separate apartment.

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    Duplex with Detached Garage
    Duplex with Detached Garage

    120 Durham Road, Dover, NH 03820

    $779,000
    3,566 sqft 0.71 AC lot

    Two residential units offer separate kitchens, laundry facilities, driveways, and outdoor areas on a level Dover parcel.

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    Duplex with Detached Two-Car Garage
    Duplex with Detached Two-Car Garage

    120 Durham Rd, Dover, NH 03820

    $779,000
    3,566 sqft

    Two-unit duplex features separate driveways and private access, supported by in-unit laundry and a detached two-car garage.

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    Portsmouth, NH Duplexes Market Trends and Statistics

    Explore 4 duplexes for sale in Portsmouth, NH, showcased through 4 active listings on our real estate platform. These investment opportunities span a total of 6,524 square feet of properties for sale, with an estimated market value of $4,519,900.

    Sale prices for duplexes in Portsmouth, NH start at $879,900, averaging $1,129,975, and reaching up to $1,325,000 — 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

    Triplexes 5
    Duplexes 4
    Apartment buildings 1

    Demographics Overview

    Population 23K
    Population Growth (5Y) +2.9%
    Median Household Income $106,520
    College Educated 17.1%

    High-Yield Neighborhoods for Investment

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

    Neighborhood Average Price
    03801 $1.3M

    Taxes & Financing

    Tax Rate (average for all types) 1.49%
    Property Tax per SF $10.47 per SF
    Tax Rate vs County Average 0.23 pp below county avg
    Average Loan-to-Value 65.0%

    Listings Trend

    New vs delisted commercial listings in Rockingham County

    New Delisted

    Total CRE Inventory on Market (SF)

    Property Size Breakdown

    The majority of commercial real estate listings in Portsmouth fall within the 100,000+ square foot range.

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    Most Searched ZIP Codes in Portsmouth, NH

    • 03801
    • 03081

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