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For lease
Office Units
NH
Portsmouth
03801
501 Islington St Suite 3

Downtown Portsmouth Office Suites Available

501 Islington St Suite 3, Portsmouth, NH 03801

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For Lease

$15 SF/Yr $10,805/Mo (calc)

Office suites for lease in downtown Portsmouth, NH.

Type:Commercial

Property size:

8,644 SF

HighLights

Located in downtown Portsmouth on Islington Street, walk to downtown and the West End.
Suite 3 offers a large space (8,644± SF) with 5 private offices and 4 conference rooms, plus open area, secure data room, 4 restrooms, and kitchen/breakroom.
CAM expenses include water, sewer, heat, and air conditioning.
Suite 1E is a smaller option (762± SF) with 2 private offices, a conference room, and a reception area.
Monument and directory signage is available.
Convenient access to I‑95 and Route 16 (1.5 miles).

We can help!

Listing Contact

Andrew Ward

Learn more

For Lease

$15 SF/Yr $10,805/Mo (calc)

Office suites for lease in downtown Portsmouth, NH.

Type:Commercial

Property size:

8,644 SF

Added:: Apr 24, 2026
Days on Market:: 50
Last Refresh:: Apr 24 at 6:02 pm

Property Features for 501 Islington St Suite 3

General Information

Standard status: Active
Size: 8,644 SF
Property subtype: Commercial

We can help!

Listing Contact

Andrew Ward

Listing agent Andrew Ward License #NH 067085

Listing office Colliers International

Listing date Apr 24, 2026

Source Elliman

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 Colliers International

HighLights

Located in downtown Portsmouth on Islington Street, walk to downtown and the West End.
Suite 3 offers a large space (8,644± SF) with 5 private offices and 4 conference rooms, plus open area, secure data room, 4 restrooms, and kitchen/breakroom.
CAM expenses include water, sewer, heat, and air conditioning.
Suite 1E is a smaller option (762± SF) with 2 private offices, a conference room, and a reception area.
Monument and directory signage is available.
Convenient access to I‑95 and Route 16 (1.5 miles).

Overview

Two office suites are available for lease on Islington Street in downtown Portsmouth. Suite 1E, located on the first floor, offers 762 square feet of space, including two private offices, a conference room, a reception area, and access to shared restrooms. Suite 3, situated on the third floor, provides 8,644 square feet of space, featuring five private offices, four conference rooms, a reception area, an open cubicle area, a secure data room, four restrooms, and a kitchen/breakroom. Common Area Maintenance (CAM) expenses cover water, sewer, heat, and air conditioning. Electric usage is separately metered and paid by the tenant. Monument and directory signage is available. The location is within walking distance to downtown and the West End, and approximately 1.5 miles from I-95 and Route 16. The bike score is 56, indicating it is bikeable, and the walk score is 82, indicating it is very walkable.

Location Intelligence

Current Use by Public Records

Summit Group Professional Services Portsmouth Neuropsychology Center Physician Elliot Zyglis Alternative Medicine Practice Partners Bank Bank Edward Jones - Financial ... Financial Advisor

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Local Demand

City: Portsmouth
County: Strafford
State: New Hampshire
Longitude: -70.769871
Latitude: 43.071691

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For lease
Office Units
NH
Portsmouth
03801
501 Islington St Suite 3

What type of property is this?

Office units - Office suites for lease in downtown Portsmouth, NH.

Where is this office units located?

The property is located at 501 Islington St Suite 3 Portsmouth, NH.

What is the lease rate?

The lease rate is $15 SF/Yr.

What are key features of this property?

This property features: Located in downtown Portsmouth on Islington Street, walk to downtown and the West End.; Suite 3 offers a large space (8,644± SF) with **5 private offices and 4 conference rooms**, plus open area, secure data room, 4 restrooms, and kitchen/breakroom.; CAM expenses include water, sewer, heat, and air conditioning.