Advertise
    Portsmouth, NH
    Duplex

    Portsmouth, NH Duplexes for Sale

    Notify Me
    List
    Map
    Greenland, NH Rye, NH North Hampton, NH Stratham, NH Rollinsford, NH Kittery, ME Hampton, NH Newington, NH
    6 properties
    Updated Two-Unit Residential Income Property
    Updated: Jul 21
    Updated Two-Unit Residential Income Property

    491 Marcy Street, Portsmouth, NH 03801

    $1,325,000
    1,800 sqft 0.07 AC lot
    Legal two‑unit property originally built circa 1750 with a Colonial architectural style
    Extensive exterior renovations in 2025: new roof, four skylights, new windows, new siding (cedar front; Hardie(R) cement board sides/rear), and blown‑in insulation
    Natural gas forced‑air heating; new furnace being installed prior to closing
    Two 100‑amp panels; public water and sewer; cable available
    Parking and outdoor space: 1 off‑street parking spot, full fenced yard, garden space, and shed/storage
    View details
    Legal Two-Unit Income Duplex
    Updated: Jul 26
    Legal Two-Unit Income Duplex

    491 Marcy Street, Portsmouth, NH 03801

    $1,325,000
    3,094 sqft
    Legal two‑unit property in Portsmouth’s South End, originally built c. 1750
    2025 exterior renovations include new roof, four skylights, new windows, and blown‑in insulation
    New siding: cedar on the front façade and Hardie® cement board siding on the sides and rear
    Owner’s attached 2‑room studio has a private entrance and spa‑inspired bath with a private sauna
    Natural gas heat with a new furnace being installed prior to closing; public water and sewer
    View details
    Well-Maintained Two-Unit Duplex
    Well-Maintained Two-Unit Duplex

    648 Kearsarge Way, Portsmouth, NH 03801

    $899,900
    684 sqft

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

    View details
    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Mixed-Use Landmark Building
    Mixed-Use Landmark Building

    96 State Street, Portsmouth, NH 03801

    Contact for pricing
    8,000 sqft

    A four-floor building with a basement and restaurant lower levels plus a top-floor three-bedroom apartment.

    View details
    Renovated Duplex with Garage Parking
    Renovated Duplex with Garage Parking

    978-980 South St, Portsmouth, NH 03801

    $1,485,000

    Well-maintained duplex offering a renovated owner’s unit, garage parking, and landscaped outdoor grounds.

    View details
    Waterfront Two-Family Home
    Waterfront Two-Family Home

    25 South Mill St, Portsmouth, NH 03801

    $1,795,000

    Newer construction two-family home in premier waterfront location.

    View details
    Based on your search, we've compiled 10 Potential Opportunities for your consideration. Besides 6 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.

    Triplex with Spinney Creek Frontage
    Triplex with Spinney Creek Frontage

    8-10 Bayview Lane, Kittery, ME 03904

    $1,200,000
    4,120 sqft 2.70 AC lot

    R-S zoned triplex on 2.7 acres with public water and sewer, featuring three vacant residential units near Spinney Creek.

    View details
    Duplex with Attached In-Law Apartment
    Duplex with Attached In-Law Apartment

    88 York Street, York, ME 03909

    $1,325,000
    3,001 sqft 0.32 AC lot

    Residential duplex with an attached apartment, central air, and an ocean-front setting in York Village (RES 1B).

    View details
    Duplex with In-Law Apartment
    Duplex with In-Law Apartment

    34 York Street, York, ME 03909

    $749,000
    2,750 sqft 0.48 AC lot

    Historic colonial duplex offering four bedrooms and three baths, plus an in-law apartment and off-street parking.

    View details
    Two-Building Residential Income Property
    Two-Building Residential Income Property

    8-10 Bayview Lane, Kittery, ME 03904

    $1,200,000
    4,120 sqft 2.70 AC lot

    Two separate buildings include a 1920 duplex plus a 1999 garage structure with an apartment, all with public water and sewer.

    View details

    Portsmouth, NH Duplexes Market Trends and Statistics

    Explore 6 duplexes for sale in Portsmouth, NH, showcased through 6 active listings on our real estate platform. These investment opportunities span a total of 13,578 square feet of properties for sale, with an estimated market value of $6,829,900.

    Sale prices for duplexes in Portsmouth, NH start at $899,900, averaging $1,365,980, and reaching up to $1,795,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

    List
    Map

    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Duplexes 6
    Quadplexes 3
    Triplexes 3
    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 $1.4M

    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.

    Need Help?

    Reach out if you need assistance with Realmo tools or have questions about your listings

    Contact Us

    Browse Duplexes for Sale Near Portsmouth, NH

    Popular Searches in Portsmouth, NH

    Popular Categories

    Most Searched ZIP Codes in Portsmouth, NH

    • 03801

    Select Neighborhood

    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!