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Downtown Office Sublease Suite
For Lease
$21 SF/Yr

140 Main St, Newmarket, NH 03857

Sublease office space with open work areas, private offices, conference room, kitchenette, and private restrooms.

Space Size3,475 SF
Days on Market126

Property Features for 140 Main St

General Information

Standard status Active
Size 3,475 SF
Class B
Property subtype Office
Lease Term MG

Building Details

Building Size 3,475 SF
Year Built 1890

Spaces For Lease

at 140 Main St
140 Main Street (Sublease) $21/SF/Yr
Size 3,475 SF
Type Office Building
Term Negotiable
Contact us
Listing Agency: The Boulos Company
Listed By: Christian Stallkamp · License #064644
Source: Boulos
Added: Jun 20 Changed: Oct 13 Last Checked: Oct 20 at 5:39PM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of The Boulos Company

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Investment Insights

Based on property information with market context.

140 Main Street in Newmarket, New Hampshire offers approximately 3,475± SF of office space available for sublease across two floors. The former bank branch setup includes a practical mix of open work areas and private offices, along with a conference room, kitchenette, and private restrooms. The space also notes modern finishes and layout.

Located on Main Street in downtown Newmarket, the property is positioned for convenient access to local routes and benefits from steady pedestrian traffic. Nearby retail and dining options support an active downtown setting.

The current sublease term runs through 12/31/2030, with potential for a longer-term arrangement; interested parties should inquire for sublease details.

Key Highlights

  • 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

Property Analytics

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Open Analytics

Current Use

Office Units

Suggested Use

Top Pick HVAC Service Law Firm (Bike/Boat/Book/etc) Store Bakery Locksmith Garden Center

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

NNN (Triple Net)
Lease Type
$3.15 /SF/Yr
CAM

Location Intelligence

Trade Area within ½ mile

428
Businesses Nearby

Demographics for 03857, NH

9,430
Population
4,443
Households
2.1
Avg Household Size
39
Median Age
50%
College-Educated
98%
High-School Grad
12.6 sq mi
ZIP Area
748
Density / Sq Mi
$94,345
Median Household Income
$53,518
Median Earnings
$1,648
Median Rent
$384,900
Median Home Value
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Market

Vacancy Rate% for Office in Northeast region

13.1% 2019
15.4% 2020
17.6% 2021
19.1% 2022
20.2% 2023
20.9% 2024
19.9% 2025

Frequently Asked Questions

What type of property is this?
Office unit - Sublease office space with open work areas, private offices, conference room, kitchenette, and private restrooms.
Where is this office unit located?
The property is located at 140 Main St Newmarket, NH.
What is the lease rate?
The lease rate is $21 SF/Yr.
What are key features of this property?
This property features: 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
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