75 Congress St, Portsmouth, NH 03801

Building Details

Year Built

1879

Listing office b***@usa.net Show Phone

Listing date Mar 12, 2026

Source Elliman

Displayed information is deemed reliable but is not guaranteed and should be independently verified.

All listing content including descriptions, pricing, images are the copyrighted material of Bill Mouflouze

Report an issue

---

Overview

Located in downtown Portsmouth, the Ben Franklin Block is a historic building offering a range of offices and suites. These spaces are suitable for professionals seeking a central location for their business.

Suggested Use

Car Rental Facility Pet Grooming Service Locksmith Restaurant Adult Day Care Farmer's Market (Bike/Boat/Book/etc) Store Restaurant Auto Parts Store Home Appliance Store

Zoning and permitted uses should be independently verified with local authorities.

Location Insight

• Map
• Local Demand

City

Portsmouth

County

Strafford

State

New Hampshire

Longitude

-70.7592

Latitude

43.0764

Nearby Similar for Lease

• 

  $3,700/Mo

  1,300 SF

  Second-Floor Office Suite

  Historic downtown office suite with private restroom and shared patio access, available immediately.

  96 Penhallow Street, Portsmouth, NH 03801

  View Details
• 

  $3,700/Mo

  1,300 SF

  Second-Floor Office Suite

  Historic downtown office with a private restroom, shared patio access, and exterior signage rights.

  96-98 Penhallow St, Portsmouth, NH 03801

  View Details
• 

  $15 SF/Yr

  8,644 SF

  Downtown Portsmouth Office Suites Available

  Office suites for lease in downtown Portsmouth, NH.

  501 Islington St Suite 3, Portsmouth, NH 03801

  View Details
• 

  $22 SF/Yr

  10,660 SF

  Retail Spaces in Hannaford-Anchored Plaza

  Retail and office spaces available in Portsmouth's West End.

  800 Islington St Units 10A & 10B, Portsmouth, NH 03801

  View Details
• Sponsored

  

  $129-$25,803/Mo

  11-2,073 SF

  Portsmouth

  170 Commerce Way, Unit 200, Portsmouth, NH 03801

  View Details
• 

  $2,500/Mo

  595 SF

  Downtown Office or Retail Space

  Flexible 595± SF storefront-ready space on State Street with downtown pedestrian activity and consistent vehicular traffic.

  66 State Street, Portsmouth, NH 03801

  View Details
• 

  $14,500/Mo

  7,000 SF

  Retail Space on Route 1

  7,000 SF retail space in high-visibility Portsmouth location.

  2299 Lafayette Rd, Portsmouth, NH 03801

  View Details
• 

  $17 SF/Yr

  3,331 SF

  Two-Story Retail and Office Suite

  Two-story space with on-site parking and flexible layout for retail or office operations.

  72 Mirona Rd Suite 2, Portsmouth, NH 03801

  View Details
• 

  $20 SF/Yr

  5,793 SF

  Downtown Office Suites

  Two move-in ready office suites with efficient floor plans and excellent natural light in Downtown Portsmouth.

  25 Chestnut Street, Portsmouth, NH 03801

  View Details
• 

  $17 SF/Yr

  5,381 SF

  Retail and Office Building

  Two-floor retail and office layout with ample parking and convenient highway access for a wide range of users.

  72 Mirona Rd, Portsmouth, NH 03801

  View Details
• 

  $10 SF/Yr

  3,921 SF

  Portsmouth Office Space For Lease

  Versatile office space in Portsmouth, accessible from city or bypass.

  500 Maplewood Ave Unit A, Portsmouth, NH 03801

  View Details
• 

  $2,500/Mo

  856 SF

  Turnkey Florist Retail Space

  Fully built-out florist retail space with greenhouses in Portsmouth.

  1000 Woodbury Ave, Portsmouth, NH 03801

  View Details

FAQs

What type of property is this?

Office units - Charming offices and suites in downtown Portsmouth's historic building.

Where is this office units located?

The property is located at 75 Congress St Portsmouth, NH.

What is the lease rate?

The lease rate is $675 /Mo.

What are key features of this property?

This property features: Prime downtown Portsmouth location; Historic Ben Franklin Block building, built in 1879; Suitable for offices and suites