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    Portsmouth, NH Office Buildings for Sale

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    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
    View details
    Based on your search, we've compiled 88 Potential Opportunities for your consideration. Besides 1 Active listings in Portsmouth, NH, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 79 Off-Market properties to explore as potential leads, plus 4 Land Listings that present a potential for development.

    Explore Opportunities in Nearby Cities

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

    Dover Commercial Building For Sale
    $825,000
    0.19 Acres

    Dover Commercial Building For Sale

    Well-maintained commercial building in a desirable Dover location.

    642 Central Avenue, Dover, NH 03820
    View details
    Dover Office Building For Sale
    $115,000
    528 SF

    Dover Office Building For Sale

    528 SF office building in Dover, NH for sale.

    3-9 Patriot Dr, Dover, NH
    View details
    High-Traffic Commercial Property For Sale
    $2,625,000
    13,700 SF

    High-Traffic Commercial Property For Sale

    98% leased commercial property with professional tenants and ample parking.

    191 Elm Street, Salisbury, MA 1952
    View details
    Professional Office Building For Sale
    $2,625,000

    Professional Office Building For Sale

    Office building with professional tenants and dedicated parking.

    Elm Street 191a, Salisbury, MA 1952
    View details

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Prime Commercial Land Opportunity
    $650,000
    13.37 Acres

    Prime Commercial Land Opportunity

    Visible commercial land near major highway with diverse development potential.

    75 Rockingham Road, Londonderry, NH 03053
    View details
    Londonderry Commercial Land Opportunity
    $500,000
    4.53 Acres

    Londonderry Commercial Land Opportunity

    4.53 acre commercial parcel with development potential near I-93.

    524R Mammoth Road, Londonderry, NH 03053
    View details
    Commercial Land Route 16
    $299,900
    4.00 Acres

    Commercial Land Route 16

    Four-acre commercial land with Route 16 frontage.

    829 Route 16, Ossipee, NH 03896
    View details
    Commercial Land in Limington, ME
    $400,000
    2,595 SF

    Commercial Land in Limington, ME

    Commercial property with potential for multiple offices and ample storage.

    192 Ossipee Trail, Limington, ME 04049
    View details

    Explore Off-Market Properties in Portsmouth, NH

    Consider similar Off-Market properties in Portsmouth, NH. You may contact the owners directly to inquire about their potential intentions to sell. To help you make a strong first impression, we can assist by reaching out to these owners with compelling proposals created using our AI tool.

    53 Grn St

    53 Grn St

    OFFICE BUILDING • 20,849 SF
    Value Estimation
    $5,800,000
    53 Grn St, Portsmouth, NH 03801-3735
    View details
    155 Commerce Way

    155 Commerce Way

    OFFICE BUILDING • 38,986 SF
    Value Estimation
    $8,440,000
    155 Commerce Way, Portsmouth, NH 03801-3243
    View details
    118 Pleasant St

    118 Pleasant St

    OFFICE BUILDING • 3,186 SF
    Value Estimation
    $1,735,000
    118 Pleasant St, Portsmouth, NH 03801-4507
    View details
    381 Middle St

    381 Middle St

    OFFICE BUILDING • 3,164 SF
    Value Estimation
    $1,295,000
    381 Middle St, Portsmouth, NH 03801-5009
    View details
    93 Pleasant St

    93 Pleasant St

    OFFICE BUILDING • 7,591 SF
    Value Estimation
    $2,010,000
    93 Pleasant St, Portsmouth, NH 03801-4504
    View details
    85 Middle St

    85 Middle St

    OFFICE BUILDING • 3,745 SF
    Value Estimation
    $1,085,000
    85 Middle St, Portsmouth, NH 03801-4303
    View details
    111 Maplewood Ave

    111 Maplewood Ave

    OFFICE BUILDING • 20,307 SF
    Value Estimation
    $5,155,000
    111 Maplewood Ave, Portsmouth, NH 03801-3749
    View details
    125 Daniel St

    125 Daniel St

    OFFICE BUILDING • 2,136 SF
    Value Estimation
    $635,000
    125 Daniel St, Portsmouth, NH 03801-3810
    View details
    62 Deer St

    62 Deer St

    OFFICE BUILDING • 3,627 SF
    Value Estimation
    $1,055,000
    62 Deer St, Portsmouth, NH 03801-3718
    View details
    73 Corporate Dr

    73 Corporate Dr

    OFFICE BUILDING • 12,300 SF
    Value Estimation
    $3,040,000
    73 Corporate Dr, Portsmouth, NH 03801-2847
    View details
    378 Islington St

    378 Islington St

    OFFICE BUILDING • 3,260 SF
    Value Estimation
    $905,000
    378 Islington St, Portsmouth, NH 03801-4206
    View details
    132 Chapel St

    132 Chapel St

    OFFICE BUILDING • 1,859 SF
    Value Estimation
    $565,000
    132 Chapel St, Portsmouth, NH 03801-3848
    View details
    350 Us Hwy 1st Byp

    350 Us Hwy 1st Byp

    OFFICE BUILDING • 7,676 SF
    Value Estimation
    $1,855,000
    350 Us Hwy 1st Byp, Portsmouth, NH 03801
    View details
    1150 Sagamore Ave

    1150 Sagamore Ave

    OFFICE BUILDING • 8,635 SF
    Value Estimation
    $2,125,000
    1150 Sagamore Ave, Portsmouth, NH 03801-5505
    View details
    1 Falkland Pl

    1 Falkland Pl

    OFFICE BUILDING • 6,058 SF
    Value Estimation
    $1,115,000
    1 Falkland Pl, Portsmouth, NH 03801-3977
    View details
    266 Middle St

    266 Middle St

    OFFICE BUILDING • 3,844 SF
    Value Estimation
    $1,025,000
    266 Middle St, Portsmouth, NH 03801-5102
    View details
    210 Commerce Way

    210 Commerce Way

    OFFICE BUILDING • 49,480 SF
    Value Estimation
    $12,520,000
    210 Commerce Way, Portsmouth, NH 03801-8200
    View details
    230 Commerce Way

    230 Commerce Way

    OFFICE BUILDING • 49,480 SF
    Value Estimation
    $11,805,000
    230 Commerce Way, Portsmouth, NH 03801-3274
    View details
    195 Commerce Way

    195 Commerce Way

    OFFICE BUILDING • 34,991 SF
    Value Estimation
    $5,090,000
    195 Commerce Way, Portsmouth, NH 03801-3243
    View details
    82 Ct St

    82 Ct St

    OFFICE BUILDING • 8,723 SF
    Value Estimation
    $2,370,000
    82 Ct St, Portsmouth, NH 03801-4414
    View details
    1550 Woodbury Ave

    1550 Woodbury Ave

    OFFICE BUILDING • 5,743 SF
    Value Estimation
    $1,535,000
    1550 Woodbury Ave, Portsmouth, NH 03801-3266
    View details
    150 Mirona Rd

    150 Mirona Rd

    OFFICE BUILDING • 3,112 SF
    Value Estimation
    $905,000
    150 Mirona Rd, Portsmouth, NH 03801-5342
    View details
    3003 Lafayette Rd

    3003 Lafayette Rd

    OFFICE BUILDING • 81,652 SF
    Value Estimation
    $22,000,000
    3003 Lafayette Rd, Portsmouth, NH 03801-5904
    View details

    Portsmouth, NH Office Buildings Investment Opportunities Market Analysis

    Explore 80 office buildings for sale in Portsmouth, NH on our real estate platform. These investment opportunities span a total of 116,306 square feet of properties for sale, with an estimated market value of $12,275,000.

    Sale prices for office properties in Portsmouth, NH start at $225,000, averaging $876,785, and reaching up to $3,300,000 — 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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