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Kathleen Pierce
REALTOR®
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40 Congress Street, Portsmouth, NH 03801

$12,500,000
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New to the Market Active
MLS#5084657
STATUSActive PROPERTY TYPECommercial - Investment

Listing Courtesy of: The Boulos Company
Agency Phone: 603-427-1333
Associate Name: Kent White
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Property Description

Located in the heart of downtown Portsmouth, 40 Congress Street offers a rare opportunity to own a boutique commercial asset in one of New England's most dynamic and historic markets. The 22,601 SF property sits on a 0.09 acre parcel and is zoned CD5 (Character District 5), allowing for a variety of commercial, office, and mixed-use uses including a possible residential conversion on the upper floors. Positioned within Portsmouth's vibrant Downtown Historic District and just steps from Market Square, the property benefits from exceptional walkability, strong surrounding demographics, and limited supply. 40 Congress Street offers a well-located asset with versatile use potential and strong long-term value. For more information, a signed NDA is required.

40 Congress Street | MLS# 5084657

This commercial property located at 40 Congress Street, Portsmouth, NH 03801 is currently listed for sale with an asking price of $12,500,000. Search Portsmouth real estate on kathleenpierce.masiellogrouprealestate.com today.

Property Features

Property Type: Commercial - Investment
Basement: Finished
Basement: Yes
Year Built: 1878

Feature Descriptions

Basement Access: Walk-up
Days on Site: 1
Sale Inclusions: Land/Building
Sewer: Public
Water: Public
Zoning: CD5

Listed By / Shown By

Listed By

Agency Name: The Boulos Company
Agency Phone: 603-427-1333
Agent Name: Kent White

Shown By

Agent Name: Kathleen Pierce
Agent Phone:
Agency Title: Better Homes and Gardens Real Estate The Masiello Group

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided 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. Information on this site was last updated 04/23/2026. The listing information on this page last changed on 04/23/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Thu 04/23/2026 5:14:10 PM EST) or MLSPIN MLS (last updated Thu 04/23/2026 5:10:50 PM EST) or Prime MLS (last updated Thu 04/23/2026 5:08:05 PM EST) or MREIS (last updated Thu 04/23/2026 5:07:13 PM EST). Real estate listings held by brokerage firms other than Better Homes and Gardens Real Estate The Masiello Group may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.

Listing data compilation and photo(s) 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 2026-04-23 17:08:05

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