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    Portsmouth, NH Commercial Real Estate for Sale

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    Greenland, NH Rye, NH North Hampton, NH
    29 results
    Historic Portsmouth Office Building For Sale
    $3,300,000
    0.25 Acres

    Historic Portsmouth Office Building For Sale

    144 Washington Street, Portsmouth, NH 03801

    Landmark Portsmouth building, ideal for professional offices or business.

    • Landmark Federal‑style residence in Portsmouth's historic Puddle Dock area with sweeping views.
    • One of the largest privately owned parcels in Portsmouth's South End with off‑street parking and potential for garage/carriage house.
    • Prime location: five‑minute walk to Market Square, Portsmouth's cultural epicenter.
    • Historic architectural details: genuine moldings, original eight‑panel doors, and distinctive dental moldings.
    • Versatile property suitable for residential or professional use, currently configured as professional offices.
    Updated: Dec 15, 2025
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    Downtown Portsmouth Mixed-Use Building
    $4,200,000
    4,101 SF

    Downtown Portsmouth Mixed-Use Building

    8 Bow Street, Portsmouth, NH 03801

    Historical mixed-use building with residential and commercial units.

    • Prime downtown Portsmouth location on a highly visible corner with robust pedestrian and vehicular traffic.
    • Mixed‑use building with a commercial unit and four luxury residential units.
    • Scrupulous renovation blending historical features with modern finishes.
    • Fully furnished residential units with full kitchens opening to living spaces.
    • Upper‑level units feature vaulted ceilings, lofted bedrooms, skylights, and abundant natural light.
    Updated: Apr 22
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    Restaurant Opportunity in Portsmouth, NH
    $275,000
    0.14 Acres

    Restaurant Opportunity in Portsmouth, NH

    Restaurant for sale in high-traffic Portsmouth location.

    155 Congress Street, Portsmouth, NH 03801
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    Downtown Portsmouth Commercial Condominium
    $2,350,000

    Downtown Portsmouth Commercial Condominium

    Adaptable commercial space in vibrant downtown Portsmouth.

    40 Bridge Street Unit 101, Portsmouth, NH 03801
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    Portsmouth Commercial Opportunity For Sale
    $825,000

    Portsmouth Commercial Opportunity For Sale

    1,782 SF building on 0.33 acres in Portsmouth, NH.

    930 Route 1 Bypass, Portsmouth, NH 03801
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    Waterfront Lot Near Downtown Portsmouth
    $1,000,000
    0.41 Acres

    Waterfront Lot Near Downtown Portsmouth

    Waterfront mixed-use property near downtown Portsmouth, offering versatile development opportunities.

    98 Cornwall Street, Portsmouth, NH 03801
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    Mixed-Use Development in Portsmouth, NH
    $4,200,000
    0.20 Acres

    Mixed-Use Development in Portsmouth, NH

    Mixed-use development with retail and luxury residential spaces.

    266 State Street, Portsmouth, NH 03801
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    Waterfront Lot Near Downtown Portsmouth
    $1,000,000
    0.16 Acres

    Waterfront Lot Near Downtown Portsmouth

    Waterfront lot near downtown Portsmouth with redevelopment potential.

    94 Langdon Street, Portsmouth, NH 03801
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    Islington Street Commercial Condo Space
    $429,900

    Islington Street Commercial Condo Space

    Turnkey commercial condo in Portsmouth's vibrant West End.

    369 Islington St A, Portsmouth, NH 3801
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    Portsmouth Industrial Condo For Sale
    $975,000
    5,100 SF

    Portsmouth Industrial Condo For Sale

    Modern 5,100 SF industrial condo in Portsmouth, NH for sale.

    280 Heritage Ave, Portsmouth, NH 3801
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    Medical/Office Condo For Sale
    $300,000
    1,275 SF

    Medical/Office Condo For Sale

    1,275 SF medical/office condo in professionally managed office park.

    278 Lafayette Rd, Portsmouth, NH 3801
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    Mixed-Use Investment Opportunity
    $4,390,000

    Mixed-Use Investment Opportunity

    Mixed-use property with income streams in downtown Portsmouth, NH.

    172 Hanover Street, Portsmouth, NH 03801
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    Historic Portsmouth Office Building For Sale
    $3,300,000

    Historic Portsmouth Office Building For Sale

    Landmark Federal-style building in Portsmouth's historic Puddle Dock area.

    144 Washington St, Portsmouth, NH 3801
    View details
    Turnkey Restaurant Opportunity in Portsmouth
    $149,000

    Turnkey Restaurant Opportunity in Portsmouth

    Turnkey restaurant with dining rooms, bars, patio in Portsmouth.

    175 High Street, Portsmouth, NH 03801
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    Downtown Portsmouth Office Suites Available
    $1,200,000
    2,117 SF

    Downtown Portsmouth Office Suites Available

    Move-in-ready office suites in a vibrant downtown location.

    10-0 Vaughan Mall, Portsmouth, NH
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    Portsmouth Office Condo For Sale
    $250,000

    Portsmouth Office Condo For Sale

    Commercial office condo in Portsmouth, renovated in 2024.

    118 Maplewood Avenue 5, Portsmouth, NH 3801
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    Portsmouth Mixed-Use Historical Gem
    $4,200,000

    Portsmouth Mixed-Use Historical Gem

    Renovated mixed-use building with residential and commercial units.

    8 Bow St, Portsmouth, NH 3801
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    Downtown Portsmouth Mixed-Use Investment
    $5,300,000

    Downtown Portsmouth Mixed-Use Investment

    Prime downtown asset with residential and commercial units.

    93-100 Market St, Portsmouth, NH 3801
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    Mixed-Use Development in Portsmouth
    $4,200,000

    Mixed-Use Development in Portsmouth

    Mixed-use development with retail and luxury residences in Portsmouth.

    266 State St, Portsmouth, NH 3801
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    Portsmouth Commercial Office Condominium
    $250,000

    Portsmouth Commercial Office Condominium

    Commercial office condominium in Portsmouth, renovated in 2024.

    118 Maplewood Avenue, Portsmouth, NH 03801
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    Mixed-Use Investment Opportunity
    $4,800,000
    12,780 SF

    Mixed-Use Investment Opportunity

    Mixed-use property with income and growth potential in downtown location.

    165-172 Hanover Street, Portsmouth, NH 3801
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    Compact Medical Office Condominium
    $94,160
    428 SF

    Compact Medical Office Condominium

    Medical office condo ideal for new or expanding practices.

    230 Lafayette Road, Portsmouth, Portsmouth, NH 3801
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    Leased Retail Condo in Portsmouth
    $715,000
    994 SF

    Leased Retail Condo in Portsmouth

    Fully leased retail condo in downtown Portsmouth's vibrant commercial district.

    135 Market St, Portsmouth, NH
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    Waterfront Office Condo For Sale
    $550,000
    1,291 SF

    Waterfront Office Condo For Sale

    Office condo with water views, close to downtown Portsmouth.

    500 Market St, Portsmouth, NH
    View details

    Portsmouth, NH Commercial Real Estate Investment Opportunities Market Analysis

    Explore 1366 commercial real estate for sale in Portsmouth, NH, showcased through 29 active listings on our real estate platform. These investment opportunities span a total of 41,221 square feet of properties for sale, with an estimated market value of $18,584,160.

    Sale prices for business properties in Portsmouth, NH start at $94,160, averaging $1,858,416, and reaching up to $5,300,000 — 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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    Property Size Breakdown

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

    Demographics Overview

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

    High-Yield Neighborhoods for Strategic Investment

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

    Neighborhood Average Price
    03801 $2.3M

    Taxes & Financing

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

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