Historic Portsmouth Office Building For
For Sale
$3,300,000
144 Washington Street, Portsmouth, NH 03801
Landmark Federal-style building in Portsmouth's historic Puddle Dock area.
Property Size3,034 SF
Price / SF$1,087
Days on Market251
Property Features for 144 Washington Street
General Information
Standard status
Active
Size
3,034 SF
Property subtype
Commercial
Zoning
MRO
Building Details
Year Built
1747
Listing Agency:
J.M.I. Investment Properties
(978) 578-5013
Listed By:
Chris Bernier
(978) 578-5013
Source:
Churchillprop
Added: Dec 15, 2025
Changed: Aug 23
Last Checked: Aug 23 at 4:41AM
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 J.M.I. Investment Properties
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
Property Profile
Current Use
Location Intelligence
Trade Area within ½ mile
2,258
Businesses Nearby
Explore this area
Business Placement
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
Questions? Ask Rey
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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 Street 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.
