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Third-Floor Office Suite
For Lease
$695/Mo

159 Middle Street, Portsmouth, NH 03801

Third-floor walk-up office suite with kitchenette, and included heat, electric, and common-area cleaning.

Space SizeContact for details
Days on Market260

Property Features for 159 Middle Street

General Information

Standard status Active

Amenities

heat
electric
cleaning of common areas
parking
kitchenette area

Building Details

Year Built 1850
Listing Agency: Samonas Realty,LLC
Listed By: John Samonas
Source: Mbgre
Added: Dec 22, 2025 Changed: Sep 8 Last Checked: Sep 8 at 6:41AM

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 Samonas Realty,LLC

Investment Insights

Based on property information with market context.

This downtown Portsmouth office suite is located on the third floor with a walk-up configuration. The space includes a kitchenette area and is set up for day-to-day office use, with heat and electric included. Common areas are cleaned, and parking is provided.

The building features classic Portsmouth character, including authentic woodwork and trim details. The location is within walking distance to the downtown activities.

Available immediately.

Key Highlights

  • Third‑floor walk‑up office suite in a classic Portsmouth building built in 1850
  • Includes heat and electric
  • Common‑area cleaning included

Property Analytics

Current Use

Mintleaf Marketing Advertising Agency Upton & Hatfield, LLP Law Firm

Suggested Use

Top Pick (Bike/Boat/Book/etc) Store Locksmith Food Market Pet Grooming Service Pharmacy Grocery & Convenience Store

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
$0.25 /SF/Yr
CAM

Location Intelligence

Trade Area within ½ mile

2,843
Businesses Nearby

Demographics for 03801, NH

22,767
Population
11,448
Households
2
Avg Household Size
43
Median Age
63%
College-Educated
98%
High-School Grad
23.8 sq mi
ZIP Area
957
Density / Sq Mi
$106,520
Median Household Income
$65,984
Median Earnings
$1,783
Median Rent
$647,500
Median Home Value

Market

Lease Benchmarks for Portsmouth, NH

$18.66 /SF/Yr
Avg Asking Price
$1.11–$37 /SF/Yr
Price Range
9,856 SF
Avg Space Size

This space is priced 91% below the average of $18.66 /SF/Yr.

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
Rey
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Frequently Asked Questions

What type of property is this?
Office units - Third-floor walk-up office suite with kitchenette, and included heat, electric, and common-area cleaning.
Where is this office units located?
The property is located at 159 Middle Street Portsmouth, NH.
What is the lease rate?
The lease rate is $695/Mo.
What are key features of this property?
This property features: Third‑floor walk‑up office suite in a classic Portsmouth building built in 1850; Includes heat and electric; Common‑area cleaning included
More about this property
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