Office Units

Newmarket, NH Office Units for Lease

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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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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 Units 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.

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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.

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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.

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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 St 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.

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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.

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Newmarket, NH Office Units Lease Rates & Market Statistics

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

Asking lease rates for Office Units 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 21% above the New Hampshire state average of $17.29 SF/Yr.

Newmarket accounts for 1% of the 186 office units currently available across Rockingham County, where nearby markets include Portsmouth and Londonderry. Office Units are one of the more limited space types in Newmarket, with just 1 listing currently available — a scarcity worth factoring into lease negotiations.

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