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40 Congress Street, Portsmouth, NH

Commercial Sale

For SaleActive
0 Beds|0 Baths|Built 1878|Portsmouth

Listed by The Boulos Company · Kent White

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.

Property Details

Essentials & finishes

  • Bedrooms:0
  • Total Baths:0
  • Property Type:Commercial Sale
  • Year Built:1878
  • County:NH-Rockingham
  • Town:Portsmouth, NH
  • Status:Active
  • Days on Market:78

Primary Features

CountyNH-Rockingham
Property TypeCommercial Sale
Year Built1878
ZoningCD5

Interior Features

BasementYes
Basement Access TypeWalk-up
Basement DescriptionFinished

Financial Details

Foreclosed / Bank-Owned / REONo
Sale IncludesLand/Building
Tax Year2026
Taxes TBDYes

Additional

Pre-ConstructionNo

External Features

Road FrontageYes
SewerPublic Sewer
UtilitiesGas On-Site
Water SourcePublic
MLS®: PrimeMLS #5084657; Listed by The Boulos Company · Kent White

Property History

Price, listing activity & annual taxes for this property

No sales history available.

Market Data

Live snapshot computed from active listings in this town

  • Active listings in Portsmouth198
  • Average list price$1,533,392
  • Price range$489,000 – $3,395,000
  • Market sentimentBuyer's Market

Mortgage Calculator

Estimate your monthly payment for this home

20%
Loan Term
6.5%
Estimated monthly payment$83,519 / mo
  • Principal & Interest$63,207
  • Property Tax$17,708
  • Home Insurance$2,604

Estimates use typical New Hampshire costs — a 1.7% effective property-tax rate, insurance at 0.25% of home value/yr, and PMI below 20% down. Actual town tax rates vary; verify with your lender and the town assessor.

$12,500,000/ Asking Price
For SaleActive
Est. $63,207 / mo20% down · 30yr · 6.5%
Tom DeMatteo

Tom DeMatteo

Owl’s Nest Real Estate · Questions?

401-648-5308

Market Sentiment

Buyer's Market
Buyer’s MarketBalancedSeller’s Market

Based on 198 active · 0 sold in Portsmouth (last 90 days)

PrimeMLS

NOTE: This representation is based in whole or in part on data generated by PrimeMLS, Inc., which assumes no responsibility for its accuracy. The data relating to real estate displayed on this site comes in part from the IDX Program of PrimeMLS.

This listing data is intended 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.

Owl's Nest Real Estate

Copyright 2026 PrimeMLS, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this Site 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. This display of listings may or may not be the entire Compilation from the PrimeMLS database, and PrimeMLS does not guarantee the accuracy of such information. The listing broker's offer of compensation is made only to other real estate licensees who are participant members of the PrimeMLS.

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