144 Washington Street
144 Washington Street photo 2
144 Washington Street photo 3
144 Washington Street photo 4
144 Washington Street photo 5
144 Washington Street photo 6
144 Washington Street photo 7
144 Washington Street photo 8
144 Washington Street photo 9
144 Washington Street photo 10
144 Washington Street photo 11
144 Washington Street photo 12
144 Washington Street photo 13
144 Washington Street photo 14
144 Washington Street photo 15
144 Washington Street photo 16
144 Washington Street photo 17
144 Washington Street photo 18
144 Washington Street photo 19
144 Washington Street photo 20
144 Washington Street photo 21
144 Washington Street photo 22
144 Washington Street photo 23
144 Washington Street photo 24
144 Washington Street photo 25
144 Washington Street photo 26
144 Washington Street photo 27
144 Washington Street photo 28
144 Washington Street photo 29
144 Washington Street photo 30
144 Washington Street photo 31
144 Washington Street photo 32
144 Washington Street photo 33
144 Washington Street photo 34
144 Washington Street photo 35
144 Washington Street photo 36
144 Washington Street photo 37
144 Washington Street photo 38
144 Washington Street photo 39
144 Washington Street photo 40
144 Washington Street photo 41
144 Washington Street photo 42
42 photos

$3,300,000

144 Washington Street
Portsmouth, NH 03801
Listed by Wayne Semprini · The Aland Realty Group
Bedrooms
N/A
Bathrooms
N/A
Living area
N/A
Year built
1747

About this home

For over two centuries, the Leonard Cotton House, a Portsmouth landmark, has stood as a centerpiece of Portsmouth’s historic Puddle Dock area. This Federal-style residence offers sweeping views across Strawberry Banke Historic Museum, Prescott Park, and the Piscataqua River. As one of the largest privately owned parcels in Portsmouth’s popular South End, it features off-street parking with room to construct a garage or carriage house. Situated on the corner of Hancock and Washington Streets, this property is a five-minute walk from Portsmouth’s cultural epicenter, Market Square. Genuine moldings, original eight panel doors, and distinctive dental moldings throughout, reflect the architectural grace of the mid-18th century. The third floor, with its exposed beams and wide pine floors, provides a most inviting private office. This historic property has served as law offices for over forty years and is currently configured as professional offices. It will serve equally well for any business seeking immediate prestige in a central Portsmouth location. The Leonard Cotton House is not merely a piece of real estate; it is part of Portsmouth's legacy, awaiting its next steward.

Property details

MLS #
5072167
Property type
Commercial Sale
Subdivision
N/A
Status
Active
Days on market
240
On market date
N/A
Stories
N/A
Garage spaces
N/A
Lot size
0.25 acres
Loading map…

Nearby schools

Within 10 miles · public school directory data (NCES)

Elementary
Little Harbour School
0.57 mi away · Grades 0-5
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
355
Student:teacher ratio
10.8:1
District
Portsmouth School District
Middle
Portsmouth Middle School
0.27 mi away · Grades 6-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
491
Student:teacher ratio
10.4:1
District
Portsmouth School District
High
Portsmouth High School
1.19 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
1,049
Student:teacher ratio
11.7:1
District
Portsmouth School District

Mortgage calculator

Estimate only — actual rate and payment depend on your lender, credit, and loan program.

$
%
%
Adjust tax / insurance estimates
% / yr
$
/mo
Est. monthly payment
$20,023/mo
$660,000 down
$2,640,000 loan
Principal & interest$17,123
Property tax (est.)$2,750
Home insurance (est.)$150

Similar homes you might like

Copyright 2026 PrimeMLS. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this Site comes in part from the IDX Program of PrimeMLS. The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated 12/17/25.