Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
80 Constitution Avenue, Portsmouth, NH
Condominium
Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Property Description
80 Constitution Avenue, Portsmouth is a condominium for sale in New Hampshire at $419,900. The property offers 1 bedroom, 1 bathroom and 722 square feet of living space. Condo ownership here means the plowing, mowing and exterior upkeep belong to the association — the weekend belongs to you. The numbers worth knowing: 2025 construction and roughly $582 per square foot. Scroll on for current photos, the complete spec sheet and this Portsmouth listing's market context.
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 #322, 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 $419,900. That works out to about $582 per square foot, for a home built in 2025. It has been on the market for 4 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:$581.58
- Property Type:Condominium
- Year Built:2025
- County:NH-Rockingham
- Town:Portsmouth, NH
- Status:Active
- Days on Market:0
Primary Features
Interior Features
Location Information
Financial Details
Additional
External Features
Property History
Estimated annual taxes for this property
| Year | Est. Tax |
|---|---|
| 2024 | $7,138 |
| 2023 | $6,960 |
| 2022 | $6,781 |
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 Portsmouth122
- Average list price$1,111,613
- Price range$395,000 – $2,775,000
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- Principal & Interest$2,123
- Property Tax$595
- Home Insurance$87
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, NHSource: Google Maps Platform (Places) and Owl’s Nest Real Estate — not PrimeMLS data.
Listed by JD Advisors, LLC · Janet Slome · 508-277-7707
Owl’s Nest Real Estate estimate, not MLS data.
Questions About This Listing
How big is 80 Constitution Avenue?
The home has 1 bedroom and 1 bathroom.
It offers 722 square feet of living space.
What kind of property is 80 Constitution Avenue?
Condominium in Portsmouth, New Hampshire, built in 2025.
What is the asking price of 80 Constitution Avenue?
80 Constitution Avenue in Portsmouth, NH is listed at $419,900.
That works out to about $582 per square foot.
What is the MLS number for 80 Constitution Avenue?
The MLS number is #5115113 (PrimeMLS), listed on October 21, 2026.
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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 10/25/26.