OFF MARKET

Listed by Andrew Samonas • Samonas Realty, LLC. Bought with Samonas Realty, LLC.

Off market sep 2025 for $651K

$736,738

•

3,358

sq ft

15 Spring St, Newmarket, NH 03857

About this home

Investment opportunity in charming Newmarket, NH! This well-maintained duplex sits on a generous corner lot—offering ample outdoor space. Unit 1 features 4 bedrooms and 1 bath, while Unit 2 holds 3 bedrooms and 1 bath with private entrances, this is ideal for owner-occupants or investors alike. The spacious driveway provides abundant off-street parking, a rare find in town. With strong rental demand in the area, this property offers excellent potential for passive income or a smart way to offset your own housing costs—live in one unit and rent the other. Whether you're building your portfolio or looking to reduce your cost of living, this duplex delivers solid ROI in a desirable, walkable community near shops, dining, and the University of New Hampshire. Don’t miss this rare chance to own a flexible, income-generating property in one of the Seacoast’s most vibrant towns.

Multi-familyProperty Type

1890Year Built

0.39 acresLot Size

$219Est. Price/Sq.Ft.

3 car garageParking

Listed by Andrew Samonas • Samonas Realty, LLC

Bought with Andrew Samonas • Samonas Realty, LLC

Redfin checked: 2 minutes ago

•Source:PrimeMLS #5050236

Redfin Estimate

$736,738

$86K since sold in September 2025$5,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 19.6% higher than the average sale price ($616K) of 6 comparable homes.

SOLD SEP 18, 2026
$560,000
A
4 beds2 baths1,764 sq ft
23+25 Cedar St #0, Newmarket, NH 03857
SOLD OCT 6, 2026
$499,900
B
4 beds2 baths1,600 sq ft
20 Maplecrest St, Newmarket, NH 03857
SOLD AUG 24, 2026
$740,000
C
5 beds2 baths2,005 sq ft
15 Oyster River Rd, Durham, NH 03824
SOLD OCT 6, 2026
$660,000
D
3 beds2 baths2,788 sq ft
18 Thompson Ln, Durham, NH 03824
SOLD JUN 22, 2026
$600,000
E
8 beds3 baths2,174 sq ft
5 1/2 Spring St, Newmarket, NH 03857
SOLD AUG 27, 2026
$635,000
F
3 beds2 baths1,756 sq ft
36 Wiswall Rd, Durham, NH 03824

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Earn from this home

Sell

$181,364

Est. take-home

List your home with Redfin and save $7,367

Market trends in 03857, NH

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

100.9%

+0.0% MoM

Median sale price

$640K

$5K MoM

Avg. days on market

29d

21 days MoM

Recently sold homes

2 MoM

New listings for sale

FOR SALE BY OWNER
$424,000
2 beds2 baths1,520 sq ft
170 Main St, Newmarket, NH 03857
OPEN TODAY, 11AM TO 12:30PM
$825,000
4 beds2.5 baths3,343 sq ft
13 Hilton Dr, Newmarket, NH 03857
OPEN TODAY, 10AM TO 12PM
$149,900
2 beds1 bath788 sq ft
42 Columbia Dr, Newmarket, NH 03857
See all

Provided by Redfin

Sale history for 15 Spring St

Date

Event

Price

PrimeMLS #5050236

Sep 2, 2025

Sold

$651,000

$194/sq ft

Jul 14, 2025

Pending

—

Jul 7, 2025

Listed

$631,000

$188/sq ft

PrimeMLS #4622468

May 19, 2017

Sold

$432,500

$129/sq ft

May 11, 2017

Pending

—

Mar 20, 2017

Contingent

—

Mar 17, 2017

Listed

$429,900

$128/sq ft

+35

Whether you are looking for the perfect owner occupied property or for an investment, properties like this don't come on the market very often. This immaculate home has been meticulously cared for by the same family for almost 50 years. This is a turn key property with over 3000 sq ft of living space offers 1700 sq ft on the first floor and over 1400 sq ft on the second. Some of the home's features are composite decking, vinyl siding, vinyl fencing, metal roof on the garage, ample parking for both units, a great in town yard and an oversized two car detached garage - all this within walking distance to all of what the NEW Newmarket has to offer.

Year

Property tax

Land + Additions

Assessment*

2025

$11,464 (+12.7%)

$192,600 + $397,700

$590,300

2024

$10,169 (−1.7%)

$192,600 + $398,600

$591,200

2023

$10,348 (+9.3%)

$110,100 + $240,800

$350,900

2022

$9,471 (+2.4%)

$110,100 + $240,800

$350,900

2021

$9,250 (+3.5%)

$110,100 + $240,800

$350,900

2020

$8,934 (+12.5%)

$110,100 + $240,800

$350,900

2018

$7,942 (+9.4%)

$63,500 + $208,100

$271,600

2017

$7,260 (+5.0%)

$63,500 + $208,100

$271,600

2016

$6,912 (+2.0%)

$63,500 + $208,100

$271,600

2015

$6,779 (−7.4%)

$63,500 + $208,100

$271,600

2013

$7,321

$71,200 + $228,100

$299,300

Tax history for 15 Spring St

Year

Property tax

Land + Additions

Assessment*

2025

$11,464 (+12.7%)

$192,600 + $397,700

$590,300

2024

$10,169 (−1.7%)

$192,600 + $398,600

$591,200

2023

$10,348 (+9.3%)

$110,100 + $240,800

$350,900

2022

$9,471 (+2.4%)

$110,100 + $240,800

$350,900

2021

$9,250 (+3.5%)

$110,100 + $240,800

$350,900

2020

$8,934 (+12.5%)

$110,100 + $240,800

$350,900

2018

$7,942 (+9.4%)

$63,500 + $208,100

$271,600

2017

$7,260 (+5.0%)

$63,500 + $208,100

$271,600

2016

$6,912 (+2.0%)

$63,500 + $208,100

$271,600

2015

$6,779 (−7.4%)

$63,500 + $208,100

$271,600

2013

$7,321

$71,200 + $228,100

$299,300

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

0.39 Acres

Year renovated

—

Sq. Ft.

3,140

Year built

1890

Style

Multi-Family (2-4 Unit)

County

Rockingham County

APN

928332

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on May 15, 2026.

Property details

Parking

Parking & Garage
Garage Capacity: 3

Interior

Basement Information
Basement: Yes
Basement Access: Interior

Multi-Unit Information
Unit Lease Term: Month to Month
Total Units: 2
# of 3+ Bedroom Units: 2
# of Baths (full): 2
Sewer: Public
Electric: 200 Amp
Roof: Shingle - Asphalt
Driveway: Common/Shared, Paved
Heating: Oil, Baseboard, Multi Zone
Cooling: None
Basement Description: Bulkhead, Climate Controlled, Concrete Floor, Exterior Access, Full, Interior Access, Stairs - Exterior, Stairs - Interior, Sump Pump

Unit 1 Information
Unit 1 Approximate Sq. Ft.: 1700
Unit 1 Baths: 1
Unit 1 Bedrooms: 4
Unit 1 Lease Term: Annual
Unit 1 Rooms: 6

Unit 2 Information
Unit 2 Approximate Sq. Ft.: 1400
Unit 2 Baths: 1
Unit 2 Bedrooms: 3
Unit 2 Rooms: 5

Exterior

Building Information
Architectural Style: Conversion, Duplex, Multi-Family
Construction Status: Existing
Construction Materials: Wood Frame, Vinyl Exterior, Vinyl Siding
Approximate Sq. Ft. Total Finished: 3358
Approximate Sq. Ft. Total: 4080

Lot, Zoning, & Easement Information
Lot: 00
Lot Features: Corner, Landscaped, In Town, Neighborhood

Survey Information
Surveyed: Unknown

Other Property & Lot Information
Year Built: 1890

Financial

Tax Information
Tax Year: 2024
Gross Amount Tax: 10269

Other Tax Information
Page Deed: 2697

Utilities

Water Information
Water Source: Public

Other Utilities Information
Internet: Internet - Cable
Cable
Varies

Location

Road Information
Road Frontage Type: Paved, Public Maintained Road, Public
Road Frontage: Yes
Road Frontage Length: 75

Other Location Information
Block: 7

Public facts

Beds: 7
Baths: 2.0
Sq. Ft.: 3,140
Stories: 2.0
Lot Size: 0.39 acres
Style: Multi-Family (2-4 Unit)
Year Built: 1890
Year Renovated: —
County: Rockingham County
APN: 928332

Home facts updated by county records on May 14, 2026

Around this home

Schools

Newmarket Elementary School

Public PreK-5 • Assigned • 0.9mi

9/10

Newmarket Jr.-Sr. High (Middle)

Public 6-8 • Assigned • 0.5mi

5/10

Newmarket Jr.-Sr. High School

Public 9-12 • Assigned • 0.5mi

7/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

5/10 Heat Factor

7 days above 97° expected this year, 15 days in 30 years

6/10 Wind Factor

27% chance of strong winds in next 30 years

2/10 Air Factor

2 unhealthy days expected this year, 2 days in 30 years

Provided by First Street

Historical weather

Newmarket, NH • 03857

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9 hours in June and 4.4 hours in December, placing it below the U.S. average for solar exposure.

9 hrs

4.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$700,000 – $848,000

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New listings for sale in 03857

FOR SALE BY OWNER

$424,000

2 beds2 baths1,520 sq ft

170 Main St, Newmarket, NH 03857

OPEN TODAY, 11AM TO 12:30PMVIDEO TOUR

$825,000

4 beds2.5 baths3,343 sq ft

13 Hilton Dr, Newmarket, NH 03857

OPEN TODAY, 10AM TO 12PM

$149,900

2 beds1 bath788 sq ft

42 Columbia Dr, Newmarket, NH 03857

Home values near 15 Spring St

Data from public records.

Address	Redfin Estimate
71 Spring St Apartment 2, Newmarket, NH 4 Beds \| 2 Baths \| 2050 Sq. Ft.	$635,271
25 Spring St, Newmarket, NH 6 Beds \| 3 Baths \| 2303 Sq. Ft.	$613,141

Address	Redfin Estimate
19 Spring St, Newmarket, NH 2 Beds \| 2 Baths \| 1440 Sq. Ft.	$508,714
9 Spring St, Newmarket, NH 6 Beds \| 2 Baths \| 2742 Sq. Ft.	$653,662

Address	Redfin Estimate
26 Spring St, Newmarket, NH 3 Beds \| 1 Baths \| 1399 Sq. Ft.	$447,229
29 Spring St, Newmarket, NH 5 Beds \| 8 Baths \| 3097 Sq. Ft.	—

Property information provided by PrimeMLS when last listed in 2025. This data may not match . Learn more.

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About this home

Redfin Estimate

Earn from this home

Market trends in 03857, NH

Sale history for 15 Spring St

Tax history for 15 Spring St

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 03857

Home values near 15 Spring St

More real estate resources