Condominium at 80 Constitution Avenue, Portsmouth
Condominium at 80 Constitution Avenue, Portsmouth, photo 2 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 3 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 4 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 5 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 6 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 7 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 8 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 9 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 10 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 11 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 12 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 13 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 14 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 15 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 16 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 17 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 18 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 19 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 20 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 21 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 22 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 23 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 24 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 25 of 26
Condominium at 80 Constitution Avenue, Portsmouth, photo 26 of 26
26 photos

$469,900

80 Constitution Avenue
Portsmouth, NH 03801
Listed by Janet Slome · JD Advisors, LLC
Bedrooms
1
Bathrooms
1
Living area
N/A
Year built
2024

About this home

Experience luxury living at Sage Portsmouth, an exceptional new condominium community offering premium amenities, including concierge services, an entertainment lounge, work-from-home spaces, a club room with a terrace, a fitness center, a game lounge, a pet spa, and bike storage. Residence #320 features The Franklin floorplan, a southwest-facing one-bedroom, one-bathroom layout with abundant natural light. The open living area is designed for both comfort and style, with high-end finishes such as eco-friendly engineered flooring, custom cabinetry, stone countertops, under-cabinet lighting, and overhead lighting. The bedroom offers a walk-through closet with direct ensuite access to a bathroom featuring a walk-in shower. Situated in vibrant Portsmouth Green, Sage provides easy access to boutique shopping, McKinnon’s Market, Fresh Press Juice, and fitness studios—all just minutes from downtown Portsmouth. Schedule your appointment today. Images may be of model home.

Property details

MLS #
5086388
Property type
Condominium
Subdivision
N/A
Status
Active
Days on market
104
On market date
N/A
Stories
N/A
Total bathrooms
1
Garage spaces
N/A
Parking spaces
N/A
Lot size
N/A
Loading map…

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
0.86 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 104 days -- 7 fewer 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.

$
%
%
Adjust tax / insurance estimates
% / yr
$
/mo
Est. monthly payment
$2,980/mo
$93,980 down
$375,920 loan
Principal & interest$2,438
Property tax (est.)$392
Home insurance (est.)$150

Similar homes you might like

Prime MLS logo

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 07/30/26.