165 Union St

Portsmouth, NH 03801

$875,000
Price
4
Beds
1,450 Sq. Ft.
$603 / Sq. Ft.
1,450
Sq. Ft.
$603
per Sq. Ft.

Description

Located in Portsmouth’s highly sought-after West End neighborhood, this charming 4-bedroom, 1.5 bath home offers the perfect blend of walkability, comfort, and thoughtful updates—all just a half mile to downtown’s shops, restaurants, entertainment, and waterfront. Inside, the home features warmth & character including lots of natural light, hardwood floors, detailed trim, and built-ins. A sunny kitchen bursting with warmth and charm has a great peninsula for casual seating & entertaining, plus a...Located in Portsmouth’s highly sought-after West End neighborhood, this charming 4-bedroom, 1.5 bath home offers the perfect blend of walkability, comfort, and thoughtful updates—all just a half mile to downtown’s shops, restaurants, entertainment, and waterfront. Inside, the home features warmth & character including lots of natural light, hardwood floors, detailed trim, and built-ins. A sunny kitchen bursting with warmth and charm has a great peninsula for casual seating & entertaining, plus a nook for a dining table. The main level also features another space that can be used as an office or cozy reading area. Enjoy the comfort of central air conditioning and a newer heating system (natural gas) & hot water heater. The sewer line was recently upgraded in 2025, offering peace of mind for years to come. The basement has interior & exterior access, with additional space for storage and includes the laundry. Step outside to enjoy a nicely sized deck, rebuilt in 2022, overlooking a fully fenced backyard—ideal for relaxing, entertaining, or letting pets play. An additional outbuilding provides excellent space for hobbies, a workshop, or extra storage, with a brand-new roof installed in 2025. Ample off-street parking adds everyday convenience to this prime location. A wonderful opportunity to enjoy West End living with easy access to everything Portsmouth has to offer. OPEN THURS. 2/5, 4:00-5:30pm.
  1. Listed by Evan Douglass • KW Coastal and Lakes & Mountains Realty/Portsmouth • Erin@ProulxRealEstate.com

Property Details for 165 Union Street

Zoning
GRC
LISTING UPDATED: 02/02/2026 07:31 PM

Property Details for 165 Union Street

StatusActive
MLS #5073774
Days on Market39
Taxes$9,531 / year
HOA Fees-
Condo/Co-op Fees-
Compass TypeSingle Family
MLS TypeResidential / Single Family
Year Built1870
Lot Size0.10 AC / 4,356 SF
CountyRockingham County

Location

Listing Courtesy of KW Coastal and Lakes & Mountains Realty/Portsmouth
Add your commute

Building Information for 165 Union Street

Stories3Year Built1870Building Size-Lot Size0.10 AC / 4,356 SF

Payment Calculator

$5,059 per month

30 year fixed, 6.15% Interest

Principal and Interest

$4,265

Property Taxes

$794

HOA Dues

$0

The Payment Calculator is for illustrative purposes only.

Property Information for 165 Union Street

Summary
Location and General Information
  • City: Portsmouth
  • County: NH-Rockingham
  • Latitude: 43.071025000000006
  • Longitude: -70.765104915344239
  • Road Frontage: Yes
  • Seasonal: No
  • State: NH
  • Street Designation: Street
  • Map: 135
  • Zip Code: 03801
Taxes and HOA Information
  • Tax Year: 2024
  • Taxes TBD: No
Parking
  • Garage: No
  • Driveway: Paved
Property
Lot Information
  • Block: 0
  • Lot: 65
  • Lot Features: In Town, Near Shopping, Neighborhood, Near School(s)
  • Lot Size Acres: 0.1
  • Road Frontage Length: 17.0
Property and Assessments
  • Assessment Amount: $852,500
  • Assessment Year: 2024
  • Property Class: Residential
  • Property Type: Single Family
  • Construction Status: Existing
  • Flood Zone: No
  • PreConstruction: No
  • Surveyed: Unknown
  • Year Built: 1870
Utilities
  • Electric: 200+ Amp Service, Circuit Breaker(s)
  • Sewer: Public
  • Water Source: Public
  • Utilities: Other
  • Internet: Cable Internet
Interior and Exterior Features
Exterior Features
  • Construction Materials: Wood Frame
  • Roof: Asphalt Shingle
Interior Features
  • Appliances: Dishwasher, Microwave, Double Oven, Refrigerator, Washer, Gas Stove
  • Basement: Yes
  • Basement Access Type: Walk-up
  • Basement Description: Interior Stairs, Unfinished, Exterior Access
  • Flooring: Carpet, Hardwood
  • Heating: Natural Gas, Forced Air
  • Cooling: Central AC
  • Total Stories: 3

Property History for 165 Union Street

DateEvent & SourcePriceAppreciation
Jan 13, 2026

Listed (Active)

New England Real Estate Network #5073774

$875,000—
Mar 25, 2020

Sold

New England Real Estate Network #4788492

$485,000—
Mar 25, 2020

Pending

New England Real Estate Network #4788492

—
Dec 21, 2019

Price Change

New England Real Estate Network #4788492

$515,000—
Dec 21, 2019

Listed (Active)

New England Real Estate Network #4788492

$495,000—
DateEvent & SourcePrice
01/13/2026

Listed (Active)

New England Real Estate Network #5073774

$875,000
03/25/2020

Sold

New England Real Estate Network #4788492

$485,000
03/25/2020

Pending

New England Real Estate Network #4788492

—
12/21/2019

Price Change

New England Real Estate Network #4788492

$515,000
12/21/2019

Listed (Active)

New England Real Estate Network #4788492

$495,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Public Records for 165 Union Street

Taxable ValueLand$473,700Additions$378,800Total$852,500
Tax Record2024$9,531 ($794 / month)
Home Facts
Beds4Baths1.5Total Finished SqFt1,450 SqFtAbove Grade Finished SqFt1,450 SqFtUnfinished Basement SqFt587 SqFtStories3Lot Size4,356 SqFtStyleSingle Family ResidenceYear Built1870ZoningGRCCountyROCKINGHAMAPNPRSM M:0135 B:0065 L:

Schools near 165 Union Street

This home is within Portsmouth School District.
Rating
School
Type
Grades
Distance
Little Harbour School
Public - K to 5
Portsmouth Middle School
Public - 6 to 8
Portsmouth High School
Public - 9 to 13
St Patrick School
Private - PK to 8
Rating
School
Distance
Little Harbour School
PublicK to 5

Portsmouth Middle School
Public6 to 8

Portsmouth High School
Public9 to 13

St Patrick School
PrivatePK to 8

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

Similar Homes

Similar Sold Homes

Explore Nearby Homes

More information about 165 Union Street, Portsmouth, NH 03801

165 Union Street is a single family home for sale in Portsmouth, NH 03801. This property was listed for sale on January 13, 2026 by KW Coastal and Lakes & Mountains Realty/Portsmouth, it's currently listed at $875,000. It has been on the market for a total of 39 days and was last sold on March 25, 2020. This listing's school district is Portsmouth School District. Nearby schools include Little Harbour School, Portsmouth Middle School and Portsmouth High School. 165 Union Street is a 4-bed, 2-bath, 1,450 sqft single family home built in 1870.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of KW Coastal and Lakes & Mountains Realty/Portsmouth

Copyright 2026 PrimeMLS, Inc. 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 02/21/2026 07:39 PM