40 Congress St

For Sale

40 Congress St, Portsmouth, NH 03801

This Portsmouth property for sale is located at 40 Congress St. The general use of 40 Congress St is office and it incorporates 22,601 square feet of class A office space. The current listed sale price for 40 Congress St is $12,500,000. 40 Congress St is situated on a lot that is 0.09 acre in size.

Contacts

Kent White

The Boulos Company

Property Details

  • Property Type Office - General Office
  • Property Size 22,601 SF
  • Lot Size 0.09 Acre
  • Property Tenancy Multi-Tenant
  • Building Class A
  • Year Built 1878
  • Year Renovated 2024
  • Date Updated Apr 24, 2026
Located in the heart of downtown PortsmouthLocated 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.
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Highlights

  • 22,601± SF boutique commercial building with flexible CD5 zoning
  • High-demand area with strong surrounding demographics and limited supply
  • Potential for mixed-use or residential conversion on upper floors
  • Prime downtown Portsmouth location within the Historic District, steps from Market Square

Attachments

Getting around

  • 97/100

    Walk Score ®

  • 65/100

    Bike Score ®

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Location

  • City Portsmouth, NH
  • Neighborhood Haymarket Square
  • Zip Code 03801
  • Market Boston

Points of Interest

  • Durham-UNH

    9.96 miles

  • Mobil

    0.33 miles

  • Buzzy's Bypass Gas

    0.69 miles

  • Penguin Fuels

    0.78 miles

  • Bypass Gas & More

    0.81 miles

  • Shell

    0.88 miles

  • Ampet Gas

    0.98 miles

  • Sunoco

    1.70 miles

  • Citgo

    1.73 miles

  • BJ’s Gas

    1.85 miles

  • EVgo

    9.94 miles

  • Ladd Street Lot

    0.08 miles

  • Hanover Street Parking Garage

    0.09 miles

  • Worth Lot

    0.10 miles

  • Market Hanover Lot

    0.13 miles

  • Bridge Street Lot

    0.14 miles

  • McIntyre Building Lot

    0.17 miles

  • Parrott Ave Lot

    0.19 miles

  • Memorial Bridge Lot

    0.25 miles

  • Foundry Place Garage

    0.26 miles

  • Prescott Park Lot

    0.33 miles

  • Hotel Thaxter

    0.11 miles

  • Hilton Garden Inn Portsmouth Downtown

    0.12 miles

  • Hampton Inn & Suites Portsmouth Downtown

    0.16 miles

  • Residence Inn Portsmouth Downtown/Waterfront

    0.16 miles

  • The Hotel Portsmouth

    0.17 miles

  • Sheraton Portsmouth Harborside Hotel

    0.26 miles

  • Ale House Inn

    0.26 miles

  • Courtyard Portsmouth

    0.96 miles

  • Holiday Inn Portsmouth

    0.98 miles

  • Howard Johnson by Wyndham Portsmouth

    0.98 miles

  • Hannaford

    0.85 miles

  • Market Basket

    1.62 miles

  • Marshalls

    1.68 miles

  • Burlington

    1.73 miles

  • TJ Maxx

    1.86 miles

  • Whole Foods Market

    1.97 miles

  • Indian Grocery Store

    2.12 miles

  • Lo's Seafood & Oriental Market

    2.13 miles

  • ALDI

    2.35 miles

  • Trader Joe's

    2.47 miles

Contact Listing Broker
Kent White

The Boulos Company

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