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  • Listed by: KW Coastal and Lakes & Mountains Realty/Portsmouth • Evan Douglass
    Bought with: Duston Leddy Real Estate
    $835,000

    165 Union Street, Portsmouth, NH 03801

    4beds
    1,450sqft
    Single Family Residence
    Built in 1870
    4,356 Square Feet Lot
    $841,000 Zestimate®
    $576/sqft
    $4,651 Estimated rent

    Home value

    $841,000

    $782,000 - $900,000

    $4,651/mo

    Zestimate® history
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    What's special

    Hardwood floorsLots of natural lightCentral air conditioningAmple off-street parkingDetailed trim
    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 SAT. 2/28, 1:00-3:00pm.

    Zillow last checked:

    Listing updated:

    Listed by:

    Evan Douglass,

    KW Coastal and Lakes & Mountains Realty/Portsmouth Erin@ProulxRealEstate.com

    Bought with:

    Eric Brassard

    Duston Leddy Real Estate

    Source: PrimeMLS,MLS#: 5073774MLS Logo

    Facts & features

    Interior

    Bedrooms & bathrooms
    • Bedrooms: 4
    • Bathrooms: 2
    • Full bathrooms: 1
    • 1/2 bathrooms: 1
    Heating
    • Natural Gas, Forced Air
    Cooling
    • Central Air
    Appliances
    • Included: Dishwasher, Microwave, Double Oven, Refrigerator, Washer, Gas Stove
    • Laundry: In Basement
    Features
    • Kitchen/Dining
    • Flooring: Carpet, Hardwood
    • Basement: Interior Stairs,Unfinished,Exterior Entry,Walk-Up Access
    Interior area
    • Total structure area: 2,037
    • Total interior livable area: 1,450 sqft
    • Finished area above ground: 1,450
    • Finished area below ground: 0

    Property

    Parking
    • Parking features: Paved, Driveway, Off Street, On Site, Parking Spaces 1 - 10
    • Has uncovered spaces: Yes
    Features
    • Levels: 3
    • Stories: 3
    • Exterior features: Deck, Shed, Storage
    • Frontage length: Road frontage: 17
    Lot
    • Size: 4,356 Square Feet
    • Features: In Town, Near Shopping, Neighborhood, Near School(s)
    Details
    • Additional structures: Outbuilding
    • Parcel number: PRSMM0135B0065L
    • Zoning description: GRC

    Construction

    Type & style
    • Home type: SingleFamily
    • Architectural style: Colonial
    • Property subtype: Single Family Residence
    Materials
    • Wood Frame
    • Foundation: Brick, Other, Stone
    • Roof: Asphalt Shingle
    Condition
    • New construction: No
    • Year built: 1870

    Utilities & green energy

    • Electric: 200+ Amp Service, Circuit Breakers
    • Sewer: Public Sewer
    • Utilities for property: Other

    Community & HOA

    Location
    • Region: Portsmouth

    Financial & listing details

    • Price per square foot: $576/sqft
    • Tax assessed value: $852,500
    • Annual tax amount: $9,531
    • Date on market: 1/13/2026
    • Road surface type: Paved

    Price history

    DateEventPrice
    4/16/2026Sold$835,000-4.6%$576/sqft
    Source: PrimeMLS #5073774 Report a problem
    1/13/2026Listed for sale$875,000+80.4%$603/sqft
    Source: PrimeMLS #5073774 Report a problem
    10/13/2021Listing removed--
    Source: Zillow Rental Manager Report a problem
    10/11/2021Listed for rent$3,300+17.9%$2/sqft
    Source: Zillow Rental Manager Report a problem
    3/25/2020Sold$485,000-2%$334/sqft
    Source: PrimeMLS #4788492 Report a problem
    2/28/2020Price change$495,000-3.9%$341/sqft
    Source: Olde Port Properties #4788492 Report a problem
    12/21/2019Listed for sale$515,000-6.4%$355/sqft
    Source: Olde Port Properties #4788492 Report a problem
    2/15/2019Listing removed$2,800$2/sqft
    Source: Owner Report a problem
    1/14/2019Listed for rent$2,800$2/sqft
    Source: Owner Report a problem
    2/1/2018Listing removed$2,800$2/sqft
    Source: Owner Report a problem
    1/27/2018Price change$2,800-6.7%$2/sqft
    Source: Owner Report a problem
    1/12/2018Listed for rent$3,000$2/sqft
    Source: Owner Report a problem
    5/3/2004Sold$550,000$379/sqft
    Source: Public Record Report a problem

    Public tax history

    YearProperty taxesTax assessment
    2024$9,531 +21%$852,500 +74.5%
    2023$7,878 +6.1%$488,400
    2022$7,424 +3.8%$488,400 +0.3%
    2020$7,154 +4.7%$486,700 +5.9%
    2019$6,833 -0.4%$459,800 +6.2%
    2018$6,859 +14.5%$433,000 +11.2%
    2017$5,989 +11.7%$389,400 +23.7%
    2016$5,362 +1.5%$314,700
    2015$5,284 +6.8%$314,700 +15.1%
    2014$4,949 +2.2%$273,400 -0.9%
    2012$4,842 +1.6%$275,900
    2011$4,765 -0.8%$275,900
    2010$4,803 $275,900
    Find assessor info on the county website

    Neighborhood: 03801

    Nearby schools

    GreatSchools rating
    Schools provided by the listing agent
    • Elementary: Little Harbor School
    • Middle: Portsmouth Middle School
    • High: Portsmouth High School
    • District: Portsmouth School District

    Source: PrimeMLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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    Estimated market value
    $841,000
    Get a cash offer in 3 minutes
    Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
    Estimated market value
    $841,000