Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Condominium · Portsmouth, NH
80 Constitution Avenue, Portsmouth, NH
$449,900
Est. $2,275/mo · 20% down, 30-yr, 6.5% (Owl’s Nest Real Estate estimate, not MLS data)
- Beds
- 1
- Baths
- 1
- Sq Ft
- 722
- Built
- 2025
- MLS®
- #5115579
Property Description
80 Constitution Avenue brings a condominium to the Portsmouth market at $449,900. Inside you'll find 1 bedroom, 1 bathroom and 722 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: 2025 construction and roughly $623 per square foot. The full photo gallery, live pricing and every MLS detail for 80 Constitution Avenue follow below.
Newly repriced for the Fall Release. Ask about developer incentives and co-broke bonus. Experience luxury living at Sage Portsmouth, an exceptional new condominium community offering premium amenities that include an entertainment lounge, work-from-home suites, a club room with terrace, fitness center, game lounge, pet spa, bike storage. Residence #414, the popular Franklin plan, offers views of the community terrace, an open-concept living area that features eco-friendly flooring, custom cabinetry, quartz countertops, and a thoughtful layout. The bedroom includes a walk-through closet with ensuite bath access and a walk-in shower. Located in Portsmouth Green, Sage offers effortless access to upscale boutique shopping, restaurants, and fitness studios, just minutes from downtown Portsmouth. 4 Franklin plans sold already this fall! Book a private showing today.Photos and video may be of model home.
Location Highlights
80 Constitution Avenue is a condominium in Portsmouth, New Hampshire, listed at $449,900. That works out to about $623 per square foot, for a home built in 2025. It has been on the market for 10 days.
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
- 1
- Total Baths
- 1
- Full Baths
- 1
- SqFt
- 722
- Price / SqFt
- $623.13
- Property Type
- Condominium
- Year Built
- 2025
- County
- NH-Rockingham
- Town
- Portsmouth, NH
- Status
- Active
- Days on Market
- 4
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, Security, Indoor Storage, Walk-In Closet(s), Common Heating/Cooling, Smart Thermostat
- Rooms - Total
- 4
- SqFt-Approximate Finished Above Grade
- 722
- SqFt-Approximate Finished Below Grade
- 0
- SqFt Approximate Total Finished
- 722
- SqFt Approximate Total
- 722
Location Information
- School - District
- Portsmouth
- School - Elementary
- Little Harbor School
- School - High
- Portsmouth
- School - Middle/Jr
- Portsmouth Middle School
Financial Details
- Association Fee
- $341
- Fee Frequency
- Monthly
- Fee Includes
- Landscaping, Plowing, Recreation, 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
- No
- Lot Features
- Condo Development
- 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 #5115579; Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Property History
Estimated annual taxes for this property
- 2024
- $7,648
- 2023
- $7,457
- 2022
- $7,266
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
$3,006/ mo
- Principal & Interest
- $2,275
- Property Tax
- $637
- Home Insurance
- $94
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 big is 80 Constitution Avenue?
80 Constitution Avenue in Portsmouth, NH has 1 bedroom and 1 bathroom in 722 square feet of finished living space.
What is the asking price of 80 Constitution Avenue?
80 Constitution Avenue in Portsmouth, NH is listed for $449,900 on PrimeMLS.
That is about $623 per square foot of finished living space.
It came on the market on October 24, 2026.
Where is 80 Constitution Avenue located?
80 Constitution Avenue is in Portsmouth, New Hampshire 03801, in Rockingham County.
Is there an HOA fee at 80 Constitution Avenue?
The association fee for 80 Constitution Avenue in Portsmouth, NH is $341 (monthly), per the MLS.
The MLS lists the fee as covering landscaping, plowing, recreation and trash.
Ask for the association documents and budget to see exactly what the fee covers.
How is 80 Constitution Avenue heated?
80 Constitution Avenue in Portsmouth, NH is heated by electric and heat pump, per the MLS.
Cooling: central air.
Does 80 Constitution Avenue have town water and sewer?
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.
Other utilities: cable at site and underground utilities.
Is there a basement at 80 Constitution Avenue?
No. The MLS lists no basement at 80 Constitution Avenue in Portsmouth, NH.
What features does 80 Constitution Avenue have?
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, security and indoor storage.
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.
Does 80 Constitution Avenue have a garage?
The MLS lists no garage at 80 Constitution Avenue in Portsmouth, NH; parking is off a common/shared and paved driveway.
Parking details: assigned, on site and parking spaces 2.
What schools serve 80 Constitution Avenue?
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 available?
Yes. 80 Constitution Avenue in Portsmouth, NH is listed as Active on PrimeMLS (MLS #5115579).
Status can change quickly; contact us to confirm availability before you visit.
Who is the listing agent for 80 Constitution Avenue?
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 kind of property 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.
How does the price of 80 Constitution Avenue compare with other Portsmouth listings?
At $449,900, 80 Constitution Avenue in Portsmouth, NH is priced below 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 do I schedule a showing of 80 Constitution Avenue?
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.