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 $629,900. The property offers 2 bedrooms, 2 bathrooms and 1,000 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: garage parking for 1, 2025 construction and roughly $630 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, and bike storage. Residence #303 features a unique, bright, open-concept layout with abundant natural light streaming through oversized windows. Premium finishes include a chef’s kitchen, primary suite with a generous walk-in closet and ensuite bath with double vanity. 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 overlooking 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 $629,900. That works out to about $630 per square foot, for a home built in 2025. It has been on the market for 8 weeks.
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:1,000
- Price / SqFt:$629.90
- Property Type:Condominium
- Year Built:2025
- County:NH-Rockingham
- Town:Portsmouth, NH
- Status:Active
- Days on Market:48
Primary Features
Interior Features
Location Information
Financial Details
Additional
External Features
Property History
Estimated annual taxes for this property
| Year | Est. Tax |
|---|---|
| 2024 | $10,708 |
| 2023 | $10,440 |
| 2022 | $10,173 |
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$852,321
- Price range$355,000 – $2,639,000
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- Principal & Interest$3,185
- Property Tax$892
- Home Insurance$131
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 2 bedrooms and 2 bathrooms.
It offers 1,000 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 $629,900.
That works out to about $630 per square foot.
What is the MLS number for 80 Constitution Avenue?
The MLS number is #5107827 (PrimeMLS), listed on September 2, 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 10/26/26.