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Investment Highlights

  • Prime downtown Portsmouth location within the Historic District, steps from Market Square
  • Potential for mixed-use or residential conversion on upper floors
  • Prime downtown Portsmouth location within the Historic District, steps from Market Square
  • High-demand area with strong surrounding demographics and limited supply

Executive Summary

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 Facts

Sale Type
Investment
Property Type
Office
Building Size
22,601 SF
Building Class
C
Year Built
1878
Price
$17,053,001 CAD
Price Per SF
$754.52 CAD
Percent Leased
100%
Tenancy
Multiple
Building Height
5 Stories
Typical Floor Size
4,520 SF
Building FAR
5.92
Lot Size
0.09 AC
Zoning
CD5
Very walkable
80/100
Moderately drivable
70/100
Fairly bikeable
40/100

Property Taxes

Property Taxes

Parcel Number
PRSM-000117-000040
Land Assessment
$1,910,072 CAD
Improvements Assessment
$5,679,195 CAD
Total Assessment
$7,589,267 CAD
  • Listing ID: 40234500

  • Date on Market: 2026-04-21

  • Last Updated:

  • Address: 40 Congress St, Portsmouth, NH 03801

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