Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Condominium · Portsmouth, NH
80 Constitution Avenue, Portsmouth, NH
$579,900
Est. $2,932/mo · 20% down, 30-yr, 6.5% (Owl’s Nest Real Estate estimate, not MLS data)
- Beds
- 2
- Baths
- 2
- Sq Ft
- 974
- Built
- 2025
- MLS®
- #5107698
Property Description
Buyers searching Portsmouth, New Hampshire will want a look at 80 Constitution Avenue — a condominium asking $579,900. It features 2 bedrooms, 2 bathrooms and 974 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: garage parking for 1, 2025 construction and roughly $595 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. 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, and bike storage. Residence #311 features a bright, open-concept layout with abundant natural light streaming through oversized windows. The home’s premium finishes include a chef’s kitchen with a large freestanding island, a primary suite with a generous walk-in closet, and an ensuite bath with a beautifully tiled, stand-up shower. Need a second bedroom that doubles as an office or guest space? This residence has you covered. Step out onto your private balcony to savor a morning coffee or unwind with an evening glass of wine. Located in Portsmouth Green, Sage offers effortless access to upscale boutique shopping, restaurants, and fitness studios; also just minutes from downtown Portsmouth. Move-in ready! Book a private showing today. We are so excited to welcome you home. Open House, Model Homes: Saturday - Thursday, 11am - 3pm or By Appointment. GPS: 2454 Lafayette Road, Portsmouth. Photos and video may be of model home.
Location Highlights
80 Constitution Avenue is a condominium in Portsmouth, New Hampshire, listed at $579,900. That works out to about $595 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
- 974
- Price / SqFt
- $595.38
- Property Type
- Condominium
- Year Built
- 2025
- County
- NH-Rockingham
- Town
- Portsmouth, NH
- Status
- Active
- Days on Market
- 50
Primary Features
- County
- NH-Rockingham
- Property Type
- Residential
- Year Built
- 2025
- Zoning
- Residential
Interior Features
- Appliances
- ENERGY STAR Qualified Dishwasher, ENERGY STAR Qualified Dryer, 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
- Heat Pump
- Interior Features
- Elevator, Passenger Elevator, Kitchen Island, Kitchen/Dining, Living/Dining, Primary BR w/ BA, Natural Light, Other, Security, Indoor Storage, Walk-In Closet(s), Common Heating/Cooling, Smart Thermostat
- Rooms - Total
- 6
- SqFt-Approximate Finished Above Grade
- 974
- SqFt-Approximate Finished Below Grade
- 0
- SqFt Approximate Total Finished
- 974
- SqFt Approximate Total
- 974
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
- $459
- 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
- Exterior Features
- Balcony
- Foundation
- Poured Concrete
- Garage
- Yes
- Garage Capacity
- 1
- Lot Features
- Condo Development, Recreational, Sidewalks, Street Lights, Walking Trails, Near Paths, Near Shopping, Near Public Transit
- Lot - Acres
- 0
- Parking
- Deeded, Garage, On Site, Parking Spaces 2, Electric Vehicle Charging Station(s)
- 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 #5107698; Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Property History
Estimated annual taxes for this property
- 2024
- $9,858
- 2023
- $9,612
- 2022
- $9,365
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
$3,875/ mo
- Principal & Interest
- $2,932
- Property Tax
- $822
- Home Insurance
- $121
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 2 bedrooms and 2 bathrooms in 974 square feet of finished living space.
What is the asking price of 80 Constitution Avenue?
80 Constitution Avenue in Portsmouth, NH is listed for $579,900 on PrimeMLS.
That is about $595 per square foot of finished living space.
It came on the market on September 1, 2026.
Does 80 Constitution Avenue have a garage?
80 Constitution Avenue in Portsmouth, NH has a 1-car garage and a common/shared and paved driveway.
Parking details: deeded, garage, on site, parking spaces 2 and electric vehicle charging station(s).
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 #5107698).
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.
Where is 80 Constitution Avenue located?
80 Constitution Avenue is in Portsmouth, New Hampshire 03801, in Rockingham County.
Location notes from the MLS: sidewalks, walking trails, near paths, near shopping and near public transit.
Is there an HOA fee at 80 Constitution Avenue?
The association fee for 80 Constitution Avenue in Portsmouth, NH is $459 (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.
How is 80 Constitution Avenue heated?
80 Constitution Avenue in Portsmouth, NH is heated by 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 (Eversource).
Other utilities: cable at site and underground utilities; cable provider Comcast.
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, natural light and security.
Outside: balcony.
Flooring: ceramic tile.
Listed appliances: ENERGY STAR qualified dishwasher, ENERGY STAR qualified dryer, microwave, electric range, ENERGY STAR qualified refrigerator and ENERGY STAR qualified washer; confirm which ones convey in the purchase agreement.
How does the price of 80 Constitution Avenue compare with other Portsmouth listings?
At $579,900, 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.