144 Washington St, Portsmouth, NH 03801

Building Details

Year Built

1747

Listing agent Tiffany Semprini Show Phone

Listing office t***@alandrealty.com Show Phone

Listing date Apr 24, 2026

Source Elliman

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All listing content including descriptions, pricing, images are the copyrighted material of Tiffany Semprini

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Overview

The Leonard Cotton House, a Portsmouth landmark for over two centuries, is a centerpiece of the historic Puddle Dock area. This Federal-style residence offers views across Strawberry Banke Historic Museum, Prescott Park, and the Piscataqua River. Situated on the corner of Hancock and Washington Streets, the property is a five-minute walk from Market Square. The property features off-street parking with room to construct a garage or carriage house. Genuine moldings, original eight panel doors, and distinctive dental moldings reflect the architectural grace of the mid-18th century. The third floor, with its exposed beams and wide pine floors, provides an inviting private office. The property has served as law offices for over forty years and is currently configured as professional offices. It will serve well for any business seeking immediate prestige in a central Portsmouth location. The property is one of the largest privately owned parcels in Portsmouth’s South End. The location has a walk score of 82, indicating it is very walkable, and a bike score of 56, indicating it is bikeable.

Suggested Use

Restaurant Law Firm Real Estate Agency Spa & Massage Center Dental Office Hair Salon Nail Salon Food Market Grocery & Convenience Store Pharmacy

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

Location Insight

• Map
• Local Demand

City

Portsmouth

County

Strafford

State

New Hampshire

Longitude

-70.7541535

Latitude

43.0747813

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FAQs

What type of property is this?

Office building - Landmark Federal-style building in Portsmouth's historic Puddle Dock area.

Where is this office building located?

The property is located at 144 Washington St Portsmouth, NH.

What is the asking price?

The asking price for this property is $3,300,000.

What are key features of this property?

This property features: Landmark Federal‑style residence in Portsmouth's historic Puddle Dock area.; Sweeping views of Strawberry Banke, Prescott Park, and the Piscataqua River.; One of the largest privately owned parcels in Portsmouth's South End with off‑street parking and room for garage/carriage house.