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    Downtown Office Sublease Suite
    Updated: Jun 20
    Downtown Office Sublease Suite

    140 Main St, Newmarket, NH 03857

    $21 SF/Yr
    Former bank branch with approximately 3,475± SF of office space available for sublease on two floors
    Includes open work areas plus private offices, conference room, kitchenette, and private restrooms
    Sublease term runs through 12/31/2030, with potential for a longer‑term arrangement
    Built in 1890
    Located on Main Street in downtown Newmarket, NH
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    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Based on your search, we've compiled 8 Potential Opportunities for your consideration. Besides 1 Active listings in Newmarket, NH, we suggest exploring alternatives. Consider Similar 4 Spaces in Nearby Cities, and Similar 3 Properties for Sales.

    Office Spaces for Lease in Nearby Cities

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

    Second-Floor Office Suite
    Second-Floor Office Suite

    201-155 Portsmouth Ave, Stratham, NH 03885

    $4,500/Mo
    3,000 sqft

    Flexible professional space includes private rooms, reception, conference space, and a kitchenette.

    View details
    Office Unit With Treatment Rooms
    Office Unit With Treatment Rooms

    1 Bayside Rd 101, Greenland, NH 03840

    $2,150/Mo
    1,519 sqft

    Renovated commercial suite with multiple enclosed rooms, private bath facilities, and access to a shared parking area.

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    Renovated Medical Office Suite
    Renovated Medical Office Suite

    101-1 Bayside Rd, Greenland, NH 03840

    $2,150/Mo
    1,519 sqft

    Renovated in 2025 with treatment rooms, private bathrooms, and laundry hookups.

    View details
    Stratham Office Suite For Lease
    Stratham Office Suite For Lease

    157 Portsmouth Ave Suite 201, Stratham, NH 03885

    $4,500/Mo

    3,000 SF office suite in Stratham town center.

    View details

    Similar Spaces for Sale in Newmarket, NH

    Consider Similar Space for Sale. We found 3 Spaces matching your search parameters.

    Downtown Newmarket Office Condominiums
    Downtown Newmarket Office Condominiums

    125 Main Street A & B, Newmarket, NH 03857

    $625,000
    2,579 sqft

    Two adjacent office condos in downtown Newmarket, New Hampshire.

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    Adjacent Studio-Style Office Condominiums
    Adjacent Studio-Style Office Condominiums

    B-125 Main St, Newmarket, NH 03857

    $295,000
    2,579 sqft

    Two adjacent studio office condos with on-site parking in a waterfront downtown complex.

    View details
    Studio-Style Office Condominiums
    Studio-Style Office Condominiums

    125 Main Street, Newmarket, NH 03857

    $295,000
    1,122 sqft

    Two adjacent studio-style office condo units are available individually or together, with ample on-site parking.

    View details

    Newmarket, NH Office Spaces Lease Rates & Market Statistics

    Explore 1 Office Spaces listing for lease in Newmarket, NH on Realmo, a commercial real estate exchange covering the Newmarket area.

    Asking lease rates for Office Spaces in Newmarket start at $21 SF/Yr, average $21 SF/Yr, and reach $21 SF/Yr at the top of the market. Pricing across the market is relatively uniform, which simplifies like-for-like comparison between listings. The local average of $21 SF/Yr is 18% above the New Hampshire state average of $17.83 SF/Yr.

    Newmarket accounts for 0% of the 213 office spaces currently available across Rockingham County, where nearby markets include Portsmouth and Londonderry.

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