Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Condominium · Portsmouth, NH
80 Constitution Avenue, Portsmouth, NH
$689,900
$719,900 · changed Nov 1, 2026
Est. $3,489/mo · 20% down, 30-yr, 6.5% (Owl’s Nest Real Estate estimate, not MLS data)
- Beds
- 2
- Baths
- 2
- Sq Ft
- 1,024
- Built
- 2025
- MLS®
- #5108223
Property Description
Offered at $689,900, this Portsmouth condominium at 80 Constitution Avenue pairs New Hampshire living with everyday convenience. It counts 2 bedrooms, 2 bathrooms and 1,024 square feet of living space. Condos in this corridor are the low-maintenance way into the market — association-managed exteriors, shared amenities and predictable monthly costs. Beyond the basics, the listing carries garage parking for 2, 2025 construction and roughly $674 per square foot. Everything below — photos, details, schools and market data — updates live from the MLS.
Newly repriced for the Fall Release. Ask about developer incentives and co-broke bonus. Discover elevated condominium living at Sage Portsmouth, a thoughtfully designed new community with an impressive collection of amenities, including an entertainment lounge, work-from-home suites, club room with terrace, fitness center, game lounge, pet spa, and bike storage. Residence #417 is a spacious fourth-floor, southeast-facing two-bedroom residence with a thoughtfully arranged layout that places the bedrooms on opposite sides of the living area for enhanced privacy and flexibility. Elevated finishes include an open kitchen with ample workspace, a primary suite with a large walk-in closet and double vanity, and a beautifully tiled ensuite bath with a walk-in shower. The second bedroom offers flexibility as a guest suite, home office, or additional living space. Two covered tandem parking spaces are included. Ideally situated within Portsmouth Green, Sage puts boutique shopping, restaurants, fitness studios, and all that downtown Portsmouth has to offer just minutes away. Schedule your private showing today and experience Sage for yourself. Photos may be of model home.
Location Highlights
80 Constitution Avenue is a condominium in Portsmouth, New Hampshire, listed at $689,900. That works out to about $674 per square foot, for a home built in 2025. It has been on the market for 2 months.
At this latitude, Portsmouth averages roughly 8.4 hours of sun a day in June and 3.6 in December.
Zoned schools in the Portsmouth: 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
- 2
- SqFt
- 1,024
- Price / SqFt
- $673.73
- Property Type
- Condominium
- Year Built
- 2025
- County
- NH-Rockingham
- Town
- Portsmouth, NH
- Status
- Active
- Days on Market
- 60
Primary Features
- County
- NH-Rockingham
- Property Type
- Residential
- Year Built
- 2025
- Zoning
- Residential
Interior Features
- Appliances
- ENERGY STAR Qualified Dryer, ENERGY STAR Qualified Dishwasher, Microwave, Electric Range, ENERGY STAR Qualified Refrigerator, ENERGY STAR Qualified Washer
- Basement
- No
- Basement Access Type
- Interior
- 1/4 Baths
- 0
- 3/4 Baths
- 0
- Cooling
- Central Air
- Electric
- 150 Amp Service
- Flooring
- Ceramic Tile, Other
- Heating
- Electric, Heat Pump
- Interior Features
- Elevator, Passenger Elevator, Kitchen Island, Kitchen/Dining, Living/Dining, Primary BR w/ BA, Walk-In Closet(s), Common Heating/Cooling, Smart Thermostat
- Rooms - Total
- 5
- SqFt-Approximate Finished Above Grade
- 1,024
- SqFt-Approximate Finished Below Grade
- 0
- SqFt Approximate Total Finished
- 1,024
- SqFt Approximate Total
- 1,024
Location Information
- School - District
- Portsmouth
- School - Elementary
- Little Harbor School
- School - High
- Portsmouth
- School - Middle/Jr
- Portsmouth Middle School
Financial Details
- Cable Company
- Comcast
- Electric Company
- Eversource
- Association Fee
- $482
- Fee Frequency
- Monthly
- Fee Includes
- Landscaping, Plowing, Trash
- Taxes TBD
- Yes
Additional
- Construction Status
- New Construction
- Construction
- Cement Siding
- Covenants
- Yes
- Flood Zone
- No
- Pre-Construction
- No
- Property Sub Type
- Condominium
- Seasonal
- No
- Total Stories
- One
- Surveyed
- Yes
- Timeshare/Fractional Ownership
- No
External Features
- Color
- White/Grey
- Driveway
- Common/Shared, Paved
- Foundation
- Poured Concrete
- Garage
- Yes
- Garage Capacity
- 2
- Lot Features
- Condo Development, Corner Lot
- Lot - Acres
- 0
- Parking
- Assigned, On Site, Parking Spaces 2
- Road Frontage Type
- Association, Paved, Public
- Road Frontage
- TBD
- Roof
- Membrane
- Sewer
- Public Sewer On-Site
- Utilities
- Cable at Site, Underground Utilities
- Water Source
- Public Water On-Site
MLS®: PrimeMLS #5108223; Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Property History
Estimated annual taxes for this property
- 2024
- $11,728
- 2023
- $11,435
- 2022
- $11,142
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
- $1,225,773
- Price range
- $425,000 – $2,775,000
Mortgage Calculator
Estimate your monthly payment for this home
Estimated Monthly Payment
$4,610/ mo
- Principal & Interest
- $3,489
- Property Tax
- $977
- Home Insurance
- $144
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 80 Constitution Avenue, Portsmouth, NH
Assigned Schools
- Elementary
- Little Harbor School
- Middle
- Portsmouth Middle School
- High School
- Portsmouth
- District
- Portsmouth
Source: Google Maps Platform (Places) and Owl’s Nest Real Estate — not PrimeMLS data.
Questions About This Listing
How much does 80 Constitution Avenue cost?
80 Constitution Avenue in Portsmouth, NH is listed for $689,900 on PrimeMLS.
That is about $674 per square foot of finished living space.
It came on the market on September 4, 2026.
How many bedrooms and bathrooms does 80 Constitution Avenue have?
80 Constitution Avenue in Portsmouth, NH has 2 bedrooms and 2 bathrooms in 1,024 square feet of finished living space.
What are the association fees for 80 Constitution Avenue?
The association fee for 80 Constitution Avenue in Portsmouth, NH is $482 (monthly), per the MLS.
The MLS lists the fee as covering landscaping, plowing and trash.
Ask for the association documents and budget to see exactly what the fee covers.
What heating and cooling does 80 Constitution Avenue have?
80 Constitution Avenue in Portsmouth, NH is heated by electric and heat pump, per the MLS.
Cooling: central air.
What are the water and sewer systems at 80 Constitution Avenue?
80 Constitution Avenue in Portsmouth, NH has public water and public sewer, per the MLS.
MLS details — water: public water on-site; sewer: public sewer on-site.
Electric: 150 amp service (Eversource).
Other utilities: cable at site and underground utilities; cable provider Comcast.
Does 80 Constitution Avenue have a basement?
No. The MLS lists no basement at 80 Constitution Avenue in Portsmouth, NH.
What are the key features of 80 Constitution Avenue?
Inside, the MLS lists these features at 80 Constitution Avenue in Portsmouth, NH: elevator, passenger elevator, kitchen island, kitchen/dining, living/dining, primary BR w/ BA, walk-in closet(s) and common heating/cooling.
Flooring: ceramic tile.
Listed appliances: ENERGY STAR qualified dryer, ENERGY STAR qualified dishwasher, microwave, electric range, ENERGY STAR qualified refrigerator and ENERGY STAR qualified washer; confirm which ones convey in the purchase agreement.
What parking does 80 Constitution Avenue have?
80 Constitution Avenue in Portsmouth, NH has a 2-car garage and a common/shared and paved driveway.
Parking details: assigned, on site and parking spaces 2.
What school district is 80 Constitution Avenue in?
The MLS places 80 Constitution Avenue 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 80 Constitution Avenue still for sale?
Yes. 80 Constitution Avenue in Portsmouth, NH is listed as Active on PrimeMLS (MLS #5108223).
Status can change quickly; contact us to confirm availability before you visit.
Which brokerage has 80 Constitution Avenue listed?
80 Constitution Avenue in Portsmouth, NH is listed by Janet Slome of JD Advisors, LLC (508-277-7707).
Owl's Nest Real Estate shows it through the PrimeMLS IDX feed; we are not the listing brokerage.
What type of home is 80 Constitution Avenue?
80 Constitution Avenue in Portsmouth, NH is a condominium built in 2025.
The MLS lists its style as Flat, Garden, with one story.
Construction status: new construction.
What town is 80 Constitution Avenue in?
80 Constitution Avenue is in Portsmouth, New Hampshire 03801, in Rockingham County.
How does the price of 80 Constitution Avenue compare with other Portsmouth listings?
At $689,900, 80 Constitution Avenue 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 80 Constitution Avenue in person?
To see 80 Constitution Avenue 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.