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Listing courtesy of PRIME_MLS / Emil Uliano / Great Island Realty LLC

25 South Mill

Portsmouth, NH 03801

– beds
– baths
1,760 sqft
5,227 sqft lot
$1,193 per sqft
2013 build
– on site

Welcome to 25 South Mill Street — a rare offering of newer construction (built in 2013) located on the waterfront in one of Portsmouth’s most sought-after neighborhoods. This thoughtfully designed two-family home presents a unique opportunity to own a versatile, income-generating property in a premier location. Each of the two units features 2 bedrooms, 1 full bath, and in-unit laundry, offering comfortable, modern living with a coastal flair. The upper unit enjoys elevated views and higher ceilings, maximizing light and enhancing the stunning water vistas. Outdoors, you'll find no shortage of parking with a deep, oversized garage (approx. 14' x 26') and a driveway that accommodates 6+ vehicles — an exceptional amenity for South End living. With flexible use options, this property is ideal for an owner-occupant looking to offset their costs with rental income, investors seeking a premium location asset, or those envisioning a condo conversion or conversion to a single-family residence. The upper unit will be vacant by end of July 2025, while the lower unit is leased through April 2026, providing both immediate flexibility and reliable income. Don’t miss this exceptional opportunity in the heart of the South End — just a short stroll to downtown Portsmouth, Prescott Park, and the city’s vibrant waterfront scene.

Listing courtesy of PRIME_MLS / Emil Uliano / Great Island Realty LLC

Last checked: Checking… • Last updated Jul 7, 2025 •

MLS# 5050204 —

The Building

Year Built:

2013
Pre-Construction:

No
Construction Status:

Existing
Construction Materials:

Clapboard Exterior, Wood Siding
Architectural Style:

Multi-Family
Roof:

Shingle
Foundation:

Brick
Total Stories:

2
Total Units:

2
Approx SqFt Total:

1760
Approx SqFt Total Finished:

1,760 Sqft
Approx SqFt Finished Above Grade:

1,760 Sqft
Approx SqFt Finished Below Grade:

0 Sqft
Approx SqFt Finished Above Grade Source:

Public Records
Road Frontage Type:

Public

Interior

Flooring:

Carpet, Wood
Basement:

Yes
Basement Description:

Unfinished
Basement Access Type:

Interior
Room 5 Type:

Leased

Location

Directions:

Marcy to South Mill
Map:

102
Latitude:

43.073259209392226
Longitude:

-70.750215271163938

The Property

Property Class:

Multi-Family
Seasonal:

No
Lot Features:

City Lot
Lot SqFt:

5,227 Sqft
Lot Acres:

0 Sqft
Zoning:

GRB
Driveway:

Paved
Flood Zone:

Yes

Listing Agent

Contact info:

Taxes

Tax Year:

2024
Taxes TBD:

No
Tax - Gross Amount:

$13,845

Beds

Bedrooms - Level 4:

4
Total 2 Bedroom Units:

2

Baths

Total Full Baths:

2
Unit 1 Baths:

1
Unit 2 Baths:

1

The Listing

Price Per SqFt:

1193.18
Foreclosed/Bank-Owned/REO:

No

Heating & Cooling

Heating:

Hot Water

Utilities

Utilities:

Gas - LP/Bottle
Separate Utilities:

Yes
Sewer:

Public
Electric:

Circuit Breaker(s)
Water Source:

Public

Appliances

Total Refrigerators:

2

Schools

Elementary School:

Little Harbor School
Middle Or Junior School:

Portsmouth Middle School
High School:

Portsmouth High School
School District:

Portsmouth

The Community

Covenants:

No
Assessment Year:

2024
Assessment Amount:

1238400

Parking

Garage:

Yes
Garage Capacity:

1
Parking:

Garage, Paved

Extra Units

Unit 1 Rooms:

4
Unit 1 Bedrooms:

2
Unit 1 Approx SqFt:

880 Sqft
Unit 2 Bedrooms:

2
Unit 2 Approx SqFt:

880

Explore the Area

My Commute

From

Walk Score®

Provided by WalkScore® Inc.

Bike Score®

Provided by WalkScore® Inc.

Sale history

Date	Event	Source	Price	% Change
7/7/25 Jul 7, 2025	Listed / Active	PRIME_MLS
7/7/25 Jul 7, 2025	Listed / Active	PRIME_MLS	$2,100,000

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This multifamily located in South End, Portsmouth, NH 03801 is currently for sale for $2,100,000. 25 South Mill is a 1,760 square foot multifamily with – beds and – baths that has been on Estately for 1 days. 25 South Mill is in the South End neighborhood of Portsmouth and has a WalkScore® of 80, making it very walkable. This multifamily is in the attendance area of Portsmouth High School, Portsmouth Middle School, and Little Harbour School.

Listing Courtesy of: PRIME_MLS and Great Island Realty LLC.

Copyright 2025 PrimeMLS, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this display 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.