Two office suites are available for lease in downtown Portsmouth on the recently improved Islington Street. Suite 1E is 762± SF on the 1st floor and is comprised of 2 private offices, a conference room, a reception area, and shared restrooms. Suite 3 is 8,644± SF on the 3rd floor and is comprised of 5 private offices, 4 conference rooms, a reception, an open cubicle area, a secure data room, 4 restrooms, and a kitchen/breakroom. CAM expenses include water, sewer, heat, and air conditioning; electric usage is separately metered and paid by Tenant. Monument and directory signage is available. Located within walking distance to downtown and the West End, and just 1.5 miles from I-95 and Route 16.

Copyright 2026 PrimeMLS, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this display comes in part from the IDX Program of PrimeMLS. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated January 21, 2026 8:23 PM EST

Name

Your Email Address

Phone

Your Questions & Comments I would like to know more about 501 Islington Street Portsmouth NH 03801

Opt in

I agree to receive marketing and customer service calls and text messages from The Hampton's RE. To opt out, you can reply 'stop' at any time or click the unsubscribe link in the emails. Consent is not a condition of purchase. Msg/data rates may apply. Msg frequency varies. Privacy Policy.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Name

Your Email Address

Phone

Date

Time

Your Questions & Comments I would like to schedule a viewing for (ID # 5071945)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Name

Your Email Address

Phone

Recipient's Name

Recipient's Email

Your Questions & Comments I found a listing on "The Hamptons Real Estate" which you may be interested in:

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Name

Your Email Address

Phone

Message Send me the deed for 501 Islington Street Portsmouth NH 03801 (ID#:5071945)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Name

Your Email Address

Phone

Message Send me the survey or tax map for 501 Islington Street Portsmouth NH 03801 (ID#:5071945)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Name

Your Email Address

Phone

Message I would like more information for 501 Islington Street Portsmouth NH 03801 (ID#:5071945)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

501 Islington StreetPortsmouth, NH 03801MLS Number 5071945

$/month over payments

Driving Directions

Ask A Question

More Info

Basic Information

Location

Amenities

Legal

Other

Your Local Office

Share