Listed by Ocean to Lakes Realty · Catherine McCauley · 603-475-2533
Condominium · Portsmouth, NH
51 Islington Street, Portsmouth, NH
$1,100,000
Est. $5,562/mo · 20% down, 30-yr, 6.5% (Owl’s Nest Real Estate estimate, not MLS data)
- Beds
- 2
- Baths
- 2
- Sq Ft
- 1,284
- Built
- 2011
- MLS®
- #5109825
Property Description
Here's your chance at a Portsmouth condominium: 51 Islington Street, priced at $1,100,000. Expect 2 bedrooms, 2 bathrooms and 1,284 square feet of living space. As a condominium, it makes an easy lock-and-leave base: arrive Friday night, hand back the key Sunday, and let the association handle the rest. Also on the sheet: 2011 construction and roughly $857 per square foot. Scroll on for current photos, the complete spec sheet and this Portsmouth listing's market context.
Welcome to 51 Islington Street Condominiums! This sun-filled, 2-bedroom, 2-bath corner condominium is located in historic downtown Portsmouth. This property features an open-concept layout with expansive windows, gleaming wood floors, and a gas fireplace complemented by custom built-in shelving. The kitchen includes a center island and granite countertops. Dining area has views toward Congress Street where you can catch a glimpse of the North Church Steeple. The primary suite offers an en-suite bath, built-ins and a walk-in closet. The second bedroom adjoins the full guest bath in the entry hall. It could be used for your home office or a den. Stackable washer/dryer is located within the unit. Central A/C and gas heat. Additionally, the unit provides convenient amenities such as secure keyless entry/elevator access, one deeded parking space, and private basement storage. This residence is located steps away from the city's dining, shopping, entertainment, and waterfront areas.
Location Highlights
51 Islington Street is a condominium in Portsmouth, New Hampshire, listed at $1,100,000. That works out to about $857 per square foot, for a home built in 2011. It has been on the market for 7 weeks.
At this latitude, Portsmouth averages roughly 8.4 hours of sun a day in June and 3.6 in December.
Zoned schools: Little Harbor School (Elementary), Portsmouth Middle School (Middle), Portsmouth (High). Always confirm zoning with the district office.
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
- 2
- Total Baths
- 2
- Full Baths
- 1
- SqFt
- 1,284
- Price / SqFt
- $856.70
- Property Type
- Condominium
- Year Built
- 2011
- County
- NH-Rockingham
- Town
- Portsmouth, NH
- Status
- Active
- Days on Market
- 35
Primary Features
- County
- NH-Rockingham
- Property Type
- Residential
- Year Built
- 2011
- Zoning
- CD4
Interior Features
- Appliances
- Dishwasher, Dryer, Electric Water Heater, Exhaust Fan, Microwave, Electric Range, Refrigerator, Washer
- Basement
- Yes
- Basement Access Type
- Interior
- Basement Description
- Concrete, Locked Storage
- 1/4 Baths
- 0
- 3/4 Baths
- 1
- Cooling
- Central Air
- Electric
- Circuit Breakers
- Flooring
- Hardwood, Tile
- Heating
- Natural Gas, Hot Air
- Interior Features
- Elevator, Gas Fireplace, Kitchen Island, Primary BR w/ BA
- Rooms - Total
- 5
- SqFt-Approximate Finished Above Grade
- 1,284
- SqFt-Approximate Finished Below Grade
- 0
- SqFt Approximate Total Finished
- 1,284
- SqFt Approximate Total
- 1,284
Location Information
- School - District
- Portsmouth School District
- School - Elementary
- Little Harbor School
- School - High
- Portsmouth
- School - Middle/Jr
- Portsmouth Middle School
Financial Details
- Association Fee
- $485
- Fee Frequency
- Monthly
- Fee Includes
- Plowing, Sewer, Trash, Water
- Tax - Gross Amount
- $9,309
- Tax Year
- 2025
- Taxes TBD
- No
Additional
- Construction Status
- Existing
- Construction
- Masonry, Wood Frame
- Covenants
- Yes
- Flood Zone
- Unknown
- Pre-Construction
- No
- Property Sub Type
- Condominium
- Seasonal
- No
- Total Stories
- One
- Surveyed
- Yes
- Timeshare/Fractional Ownership
- No
External Features
- Driveway
- Paved
- Exterior Features
- Window Screens
- Foundation
- Concrete
- Garage
- No
- Lot Features
- Condo Development, In Town, Near Golf Course, Near Shopping, Near Public Transit, Near Hospital
- Parking
- Deeded, On Site, Parking Spaces 1
- Road Frontage Type
- Association, Paved, Public Maintained Road
- Road Frontage
- Yes
- Road Frontage Length
- 118
- Roof
- Shingle
- Sewer
- Public
- Utilities
- Cable
- Water Source
- Public
MLS®: PrimeMLS #5109825; Listed by Ocean to Lakes Realty · Catherine McCauley · 603-475-2533
Property History
Estimated annual taxes for this property
- 2024
- $18,700
- 2023
- $18,233
- 2022
- $17,765
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
- 124
- Average list price
- $1,181,117
- Price range
- $425,000 – $2,775,000
Mortgage Calculator
Estimate your monthly payment for this home
Estimated Monthly Payment
$7,350/ mo
- Principal & Interest
- $5,562
- Property Tax
- $1,558
- Home Insurance
- $229
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 51 Islington Street, Portsmouth, NH
Assigned Schools
- Elementary
- Little Harbor School
- Middle
- Portsmouth Middle School
- High School
- Portsmouth
- District
- Portsmouth School District
Source: Google Maps Platform (Places) and Owl’s Nest Real Estate — not PrimeMLS data.
Questions About This Listing
How much does 51 Islington Street cost?
51 Islington Street in Portsmouth, NH is listed for $1,100,000 on PrimeMLS.
That is about $857 per square foot of finished living space.
It came on the market on September 15, 2026.
How many bedrooms and bathrooms does 51 Islington Street have?
51 Islington Street in Portsmouth, NH has 2 bedrooms and 2 bathrooms (1 full and 1 three-quarter) in 1,284 square feet of finished living space.
What heating and cooling does 51 Islington Street have?
51 Islington Street in Portsmouth, NH is heated by natural gas and hot air, per the MLS.
Cooling: central air.
What are the water and sewer systems at 51 Islington Street?
51 Islington Street in Portsmouth, NH has public water and public sewer, per the MLS.
MLS details — water: public; sewer: public.
Electric: circuit breakers.
Other utilities: cable.
Does 51 Islington Street have a basement?
Yes. 51 Islington Street in Portsmouth, NH has a basement with interior access.
The MLS describes it as concrete and locked storage.
What are the key features of 51 Islington Street?
Inside, the MLS lists these features at 51 Islington Street in Portsmouth, NH: elevator, gas fireplace, kitchen island and primary BR w/ BA.
Outside: window screens.
Flooring: hardwood and tile.
Listed appliances: dishwasher, dryer, electric water heater, exhaust fan, microwave, electric range, refrigerator and washer; confirm which ones convey in the purchase agreement.
What parking does 51 Islington Street have?
The MLS lists no garage at 51 Islington Street in Portsmouth, NH; parking is off a paved driveway.
Parking details: deeded, on site and parking spaces 1.
What school district is 51 Islington Street in?
The MLS places 51 Islington Street in Portsmouth, NH in the Portsmouth School District.
Listed schools: Little Harbor School (elementary), Portsmouth Middle School (middle) and Portsmouth (high).
School assignments can change; confirm with the district.
Is 51 Islington Street still for sale?
Yes. 51 Islington Street in Portsmouth, NH is listed as Active on PrimeMLS (MLS #5109825).
Status can change quickly; contact us to confirm availability before you visit.
Which brokerage has 51 Islington Street listed?
51 Islington Street in Portsmouth, NH is listed by Catherine McCauley of Ocean to Lakes Realty (603-475-2533).
Owl's Nest Real Estate shows it through the PrimeMLS IDX feed; we are not the listing brokerage.
What type of home is 51 Islington Street?
51 Islington Street in Portsmouth, NH is a condominium built in 2011.
The MLS lists its style as Garden, with one story.
What town is 51 Islington Street in?
51 Islington Street is in Portsmouth, New Hampshire 03801, in Rockingham County.
Location notes from the MLS: in town, near golf course, near shopping, near public transit and near hospital.
What are the annual property taxes for 51 Islington Street?
Annual property taxes on 51 Islington Street in Portsmouth, NH are $9,309 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.
What are the association fees for 51 Islington Street?
The association fee for 51 Islington Street in Portsmouth, NH is $485 (monthly), per the MLS.
The MLS lists the fee as covering plowing, sewer, trash and water.
Ask for the association documents and budget to see exactly what the fee covers.
How does the price of 51 Islington Street compare with other Portsmouth listings?
At $1,100,000, 51 Islington Street in Portsmouth, NH is priced above the $659,900 median asking price of the 69 condos 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 can I see 51 Islington Street in person?
To see 51 Islington 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.