Search
Historic Portsmouth Office Building For Sale
For Sale
$3,300,000

144 Washington St, Portsmouth, NH 03801

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

Days on Market99

Property Features for 144 Washington St

General Information

Standard status Active
Property subtype Commercial

Building Details

Year Built 1747
Listing Agency:
Listed By: Tiffany Semprini
Source: Elliman
Added: Apr 24 Changed: Jul 10 Last Checked: Jul 30 at 5:52AM

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 Tiffany Semprini

Investment Insights

Based on property information with market context.

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.

Key Highlights

  • 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.

Property Analytics

Current Use

Durbin Law Offices, ... Law Firm Loughlin Peter J Law Firm Colby Gamester Consultant Creed Michael Insurance Agency

Suggested Use

Top Pick (Bike/Boat/Book/etc) Store Locksmith Pet Grooming Service Catering Service Pharmacy Home Appliance Store

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Location Intelligence

Trade Area within ½ mile

2,258
Businesses Nearby

Demographics for 03801, NH

22,767
Population
11,448
Households
2
Avg Household Size
43
Median Age
63%
College-Educated
98%
High-School Grad
23.8 sq mi
ZIP Area
957
Density / Sq Mi
$106,520
Median Household Income
$65,984
Median Earnings
$1,783
Median Rent
$647,500
Median Home Value

Market

Vacancy Rate% for Office in Northeast region

13.1% 2019
15.4% 2020
17.6% 2021
19.1% 2022
20.2% 2023
20.9% 2024
19.9% 2025
Rey
Questions? Ask Rey
Realmo’s AI knows this listing — price, zoning, demand, history. Ask anything.

Frequently Asked Questions

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.
More about this property
Thanks! Your message was sent.
Error! Your message wasn't sent.
Please enter your name
Please enter email
Please enter the email in the correct format
Please enter phone
Please enter the number in the correct format
Please enter message