Condominium at 80 Constitution Avenue, Portsmouth
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28 photos

$589,900

80 Constitution Avenue
Portsmouth, NH 03801
Listed by Janet Slome · JD Advisors, LLC
Bedrooms
2
Bathrooms
2
Living area
N/A
Year built
2025

About this home

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 #231 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, just minutes from downtown Portsmouth. Book a private showing today. We're excited to welcome you home. Photos and video may be of model home.

Property details

MLS #
5067945
Property type
Condominium
Subdivision
N/A
Status
Active
Days on market
157
On market date
N/A
Stories
N/A
Total bathrooms
2
Garage spaces
1
Parking spaces
N/A
Lot size
N/A
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Nearby schools

Within 10 miles. School directory data from the National Center for Education Statistics (NCES), accessed via the Urban Institute Education Data API. Local Score is calculated by INNOVATE Real Estate; where a state rating is shown, it comes from that state's own official school report card.

Elementary
Mary C. Dondero Elementary School
0.85 mi away · Grades 0-5
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
318
Student:teacher ratio
10.6:1
District
Portsmouth School District
Middle
Rye Junior High School
1.66 mi away · Grades 5-8
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
181
Student:teacher ratio
9.5:1
District
Rye School District
High
Portsmouth High School
1.91 mi away · Grades 9-12
Nearest school -- attendance-zone data not available here
5.0
Local Score (student-teacher ratio only (preliminary -- will incorporate state test-score data once available)) -- not an official state rating
Enrollment
1,049
Student:teacher ratio
11.7:1
District
Portsmouth School District

Walkability

Blended score for Portsmouth's center, calculated by INNOVATE Real Estate from two sources: the EPA's National Walkability Index (street network, transit, land-use mix) and Google Places amenity data (what's actually reachable on foot from this point). 60% EPA National Walkability Index + 40% nearby-amenity density (Google Places).

63
Walkable
out of 100
EPA National Walkability Index
8.8 / 20 -- Below average walkable
Google Places amenity density
90 / 100
Restaurants & cafes20
Grocery stores2
Parks7
Schools6
Transit stops18
Pharmacies2

Market position

How this listing compares to current activity in Portsmouth, from live MLS data.

On the market 157 days -- 46 more days than Portsmouth's current average of 111 days.
For reference, the median list price across 235 active listings in Portsmouth right now is $529,900.

Mortgage calculator

Estimate only - actual rate and payment depend on your lender, credit, and loan program.

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Est. monthly payment
$3,702/mo
$117,980 down
$471,920 loan
Principal & interest$3,061
Property tax (est.)$492
Home insurance (est.)$150

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Copyright 2026 PrimeMLS. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this Site comes in part from the IDX Program of PrimeMLS. The information being provided is 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 08/06/26.