Listed by Carey Giampa, LLC/Seabrook Beach · Patrick Carey · Cell: 603-583-1000
Single Family Residence · Portsmouth, NH
171 Gates Street, Portsmouth, NH
$2,639,000
Est. $13,344/mo · 20% down, 30-yr, 6.5% (Owl’s Nest Real Estate estimate, not MLS data)
- Beds
- 4
- Baths
- 2
- Sq Ft
- 2,450
- Built
- 1710
- MLS®
- #5087030
Property Description
171 Gates Street sits in Portsmouth, New Hampshire — a single-family home offering 4 bedrooms, 2 bathrooms and 2,450 square feet of living space. The asking price is $2,639,000. The format is the classic one — a standalone home with no association between you and your plans for it. Beyond the basics, the listing carries a 0.14-acre lot, 1710 construction and roughly $1,077 per square foot. See the listing's full details below, and reach out for a private showing of 171 Gates Street.
The Tobias Langdon House, circa 1710, is a rare and remarkable surviving residence set within one of the few intact colonial-era neighborhoods in New England’s most attractive seaport town. Rich in historic, character and timeless appeal, the home has been thoughtfully updated to provide the comfort, efficiency, and ease of modern living while preserving its extraordinary architectural integrity. Located in the heart of Portsmouth’s coveted South End on a low-trafficked side street, the home offers a rare sense of privacy and tranquility just steps from the vibrant energy of the city. Inside, you’ll find original wide-plank flooring, authentic architectural details, gracious 8-foot ceilings, and generously scaled rooms that reflect the craftsmanship of a bygone era, all enhanced by abundant natural light that creates a warm and inviting atmosphere throughout. Every detail tells a story, from the preserved period features to the carefully integrated modern systems, including central air conditioning, a new heating system, updated electrical, and the added peace of mind of a full-house generator. The cedar shake roof further underscores the home’s authenticity while complementing its enduring aesthetic. Set on an oversized lot, the property unfolds into a private backyard garden oasis with serene river views, framed by mature, flowering landscaping inc exotic Japanese maple and cherry trees that change beautifully with the seasons. An expansive, fully equipped outdoor kitchen creates the perfect setting for effortless entertaining and unforgettable gatherings under the open sky. Adding to the home’s exceptional rarity and convenience is 3-car parking providing ease and flexibility. From this unparalleled location, you are just moments from Market Square, Prescott Park, the waterfront, and an array of acclaimed restaurants, boutiques, and cultural attractions that define Portsmouth as one of the most desirable small seaside cities in New England. Showings begin 5/8/26
Location Highlights
171 Gates Street is a single family residence in Portsmouth, New Hampshire, listed at $2,639,000. That works out to about $1,077 per square foot, for a home built in 1710. It has been on the market for 6 months.
At this latitude, Portsmouth averages roughly 8.4 hours of sun a day in June and 3.6 in December.
Source: zoned school names are PrimeMLS listing data; distances, sun exposure and school facts are Owl’s Nest Real Estate additions (school facts from the NCES, U.S. Department of Education) — not PrimeMLS data.
Property Details
Essentials & finishes
- Bedrooms
- 4
- Total Baths
- 2
- Full Baths
- 1
- SqFt
- 2,450
- Price / SqFt
- $1077.14
- Property Type
- Single Family Residence
- Year Built
- 1710
- County
- NH-Rockingham
- Town
- Portsmouth, NH
- Status
- Active
- Days on Market
- 172
Primary Features
- County
- NH-Rockingham
- Property Type
- Residential
- Year Built
- 1710
- Zoning
- GRB
Interior Features
- Appliances
- Dishwasher, Dryer, Range Hood, Gas Range, Refrigerator, Washer
- Basement
- Yes
- Basement Access Type
- Interior
- Basement Description
- Full, Unfinished
- 1/4 Baths
- 0
- 3/4 Baths
- 1
- Cooling
- Central Air
- Electric
- 200+ Amp Service, Circuit Breakers
- Heating
- Hot Water, Zoned
- Rooms - Total
- 8
- SqFt-Approximate Finished Above Grade
- 2,450
- SqFt-Approximate Finished Below Grade
- 0
- SqFt Approximate Total Finished
- 2,450
- SqFt Approximate Total
- 3,308
Financial Details
- Cable Company
- Verizon or Xfinnity
- Electric Company
- Eversource
- Possession
- Close Of Escrow, Negotiable
- Tax - Gross Amount
- $19,651.02
- Tax Year
- 2025
- Taxes TBD
- No
Additional
- Construction Status
- Existing
- Construction
- Clapboard, Wood Siding
- Covenants
- No
- Flood Zone
- No
- Pre-Construction
- No
- Property Sub Type
- Single Family Residence
- Seasonal
- No
- Total Stories
- 2.5
- Surveyed
- Unknown
- Timeshare/Fractional Ownership
- No
External Features
- Driveway
- Brick/Pavers
- Foundation
- Brick/Mortar, Concrete, Fieldstone, Granite
- Garage
- No
- Lot Features
- Landscaped, Sidewalks, Views, In Town, Near Country Club, Near Golf Course, Near Shopping, Neighborhood, Near Public Transit, Near Hospital
- Lot - Acres
- 0.14
- Lot - SqFt
- 6,098
- Parking
- Driveway, Off Street, On Site, Parking Spaces 3 - 5
- Road Frontage Type
- Paved, Public Maintained Road, Public
- Road Frontage
- TBD
- Roof
- Asphalt Shingle
- Sewer
- Public
- Utilities
- Underground Gas
- Water Source
- Public
- Water Body Type
- River
MLS®: PrimeMLS #5087030; Listed by Carey Giampa, LLC/Seabrook Beach · Patrick Carey · Cell: 603-583-1000
Property History
Estimated annual taxes for this property
- 2024
- $44,863
- 2023
- $43,741
- 2022
- $42,620
Source: Owl’s Nest Real Estate estimate from the list price at New Hampshire’s average effective tax rate — not PrimeMLS or town assessor data. Verify with the town assessor.
Market Data
Live snapshot computed by Owl’s Nest Real Estate from PrimeMLS IDX active listings in this town
- Active listings in Portsmouth
- 123
- Average list price
- $1,116,133
- Price range
- $425,000 – $2,775,000
Mortgage Calculator
Estimate your monthly payment for this home
Estimated Monthly Payment
$17,633/ mo
- Principal & Interest
- $13,344
- Property Tax
- $3,739
- Home Insurance
- $550
Source: Owl’s Nest Real Estate estimate, not PrimeMLS data. Estimates use typical New Hampshire costs — a 1.7% effective property-tax rate, insurance at 0.25% of home value/yr, and PMI below 20% down. Actual town tax rates vary; verify with your lender and the town assessor.
Around This Property
Schools, everyday places and nearby destinations near 171 Gates Street, Portsmouth, NH
Source: Google Maps Platform (Places) and Owl’s Nest Real Estate — not PrimeMLS data.
Questions About This Listing
How big is 171 Gates Street?
171 Gates Street in Portsmouth, NH has 4 bedrooms and 2 bathrooms (1 full and 1 three-quarter) in 2,450 square feet of finished living space.
What is the asking price of 171 Gates Street?
171 Gates Street in Portsmouth, NH is listed for $2,639,000 on PrimeMLS.
That is about $1,077 per square foot of finished living space.
It came on the market on May 5, 2026.
What features does 171 Gates Street have?
The MLS lists these appliances at 171 Gates Street in Portsmouth, NH: dishwasher, dryer, range hood, gas range, refrigerator and washer; confirm which ones convey in the purchase agreement.
Does 171 Gates Street have a garage?
The MLS lists no garage at 171 Gates Street in Portsmouth, NH; parking is off a brick/pavers driveway.
Parking details: driveway, off street, on site and parking spaces 3 - 5.
Does 171 Gates Street have a view?
Yes. The MLS lists views for 171 Gates Street in Portsmouth, NH.
Is 171 Gates Street still available?
Yes. 171 Gates Street in Portsmouth, NH is listed as Active on PrimeMLS (MLS #5087030).
Status can change quickly; contact us to confirm availability before you visit.
Who is the listing agent for 171 Gates Street?
171 Gates Street in Portsmouth, NH is listed by Patrick Carey of Carey Giampa, LLC/Seabrook Beach (603-474-3401).
Owl's Nest Real Estate shows it through the PrimeMLS IDX feed; we are not the listing brokerage.
What kind of property is 171 Gates Street?
171 Gates Street in Portsmouth, NH is a single-family home built in 1710.
The MLS lists its style as Antique, Colonial, with 2.5 stories.
Where is 171 Gates Street located?
171 Gates Street is in Portsmouth, New Hampshire 03801, in Rockingham County.
Location notes from the MLS: sidewalks, in town, near country club, near golf course, near shopping and near public transit.
How much land comes with 171 Gates Street?
171 Gates Street in Portsmouth, NH sits on 0.14 acres, per the MLS.
The lot is described as landscaped.
Zoning: GRB.
The MLS lists it as outside a flood zone.
How much are the property taxes on 171 Gates Street?
Annual property taxes on 171 Gates Street in Portsmouth, NH are $19,651 for the 2025 tax year, per the MLS.
New Hampshire towns set their own tax rates and revalue periodically, so confirm the current bill with the Portsmouth assessing office.
How is 171 Gates Street heated?
171 Gates Street in Portsmouth, NH is heated by hot water and zoned, per the MLS.
Cooling: central air.
Does 171 Gates Street have town water and sewer?
171 Gates Street in Portsmouth, NH has public water and public sewer, per the MLS.
MLS details — water: public; sewer: public.
Electric: 200+ amp service and circuit breakers (Eversource).
Other utilities: underground gas; cable provider Verizon or Xfinnity.
Is there a basement at 171 Gates Street?
Yes. 171 Gates Street in Portsmouth, NH has a basement with interior access.
The MLS describes it as full and unfinished.
How does the price of 171 Gates Street compare with other Portsmouth listings?
At $2,639,000, 171 Gates Street in Portsmouth, NH is priced above the $1,495,000 median asking price of the 43 single-family homes for sale in Portsmouth on PrimeMLS as of November 3, 2026 (this listing included).
That figure is Owl's Nest Real Estate's analysis of active listings, and asking prices are not sale prices — ask us for recent comparable sales before you make an offer.
How do I schedule a showing of 171 Gates Street?
To see 171 Gates Street in Portsmouth, NH, use Request a Showing on this page or call Owl's Nest Real Estate at 401-648-5308.
We can show any MLS-listed home and represent you as your buyer's agent; the listing brokerage represents the seller.
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NOTE: This representation is based in whole or in part on data generated by PrimeMLS, Inc., which assumes no responsibility for its accuracy. The data relating to real estate displayed on this site comes in part from the IDX Program of PrimeMLS.
This listing data is intended 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 11/03/26.