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$539,900
110 Days On Site

80 Constitution Avenue 307
Portsmouth, NH 03801

For Sale|Condominium|Active
1
Bed
1
Total Bath
1
Full Bath
833
SqFt
$648
/SqFt
2025
Built
County:
Rockingham
Listing courtesy of Janet Slome of JD Advisors, LLC
Call Now: (207) 255-7659
Is this the listing for you? We can help make it yours.
(207) 255-7659
Upcoming Open Houses
Wed, Jul 22, 11:00 AM - 3:00 PM
Thu, Jul 23, 11:00 AM - 3:00 PM
Sat, Jul 25, 11:00 AM - 3:00 PM
Sun, Jul 26, 11:00 AM - 3:00 PM
80 Constitution Avenue 30780 Constitution Avenue 30780 Constitution Avenue 30780 Constitution Avenue 307
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Mortgage Calculator

Monthly Payment (Est.)

$2,463
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Experience elevated living at Sage Portsmouth, a premier new condominium community offering concierge services, a club room with terrace, fitness center, game lounge, pet spa, work-from-home spaces, and bike storage. Residence #307 showcases The Harrison, the largest 1-bedroom floor plan, thoughtfully designed to maximize space, light, and functionality. This desirable southeast-facing home features a double vanity in the ensuite bath, additional closet storage rarely found in a 1BR layout, and a private interior balcony that enhances everyday living. Eco-friendly flooring, custom cabinetry, quartz countertops, and under-cabinet lighting create a refined and modern aesthetic throughout. The spacious bedroom offers a walk-in closet and walk-in shower for added comfort and convenience. This 1BR residence also includes two deeded parking spaces, a rare and valuable offering. Ideally located in Portsmouth Green, just minutes from downtown shopping, dining, and fitness studios. Now accepting reservations. Move-in ready. Schedule your private showing today. Images are of model home.

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Listing Snapshot
Price 
$539,900
Days On Site 
110 Days
Bedrooms 
1
Inside Area (SqFt) 
833 sqft
Total Baths 
1
Full Baths 
1
Partial Baths 
N/A
Lot Size 
N/A
Year Built 
2025
MLS® Number 
5081801
Status 
Active
Property Tax 
N/A
HOA/Condo/Coop Fees 
$392 monthly
Sq Ft Source 
N/A
Friends & Family
Recent Activity
3 weeks agoListing updated with changes from the MLS®
3 months agoStatus changed to Active
4 months agoListing first seen on site
General Features
Number Of Stories 
1
Parking 
PavedShared DrivewayAssignedOn Site
Pets 
Cats OKDogs OKNumber Limit
Property Condition 
New Construction
Property Sub Type 
Condominium
Sewer 
Public Sewer
SqFt Above 
833
SqFt Total 
833
Style 
FlatGarden
Utilities 
Cable AvailableUnderground Utilities
Water Source 
Public
Zoning 
Residential
Interior Features
Appliances 
DryerMicrowaveElectric Range
Cooling 
Central Air
Electric 
150 Amp Service
Flooring 
Ceramic Tile
Heating 
Heat PumpElectric
Interior 
Kitchen IslandSmart Thermostat
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Exterior Features
Construction Details 
Cement Siding
Roof 
Membrane
Community Features
Association Amenities 
ClubhouseLandscapingElevator(s)
Association Dues 
392
HOA Fee Frequency 
Monthly
School District 
Portsmouth
Schools
School District
Portsmouth
Elementary School
Little Harbor School
Middle School
Portsmouth Middle School
High School
Portsmouth High School
Listing courtesy of Janet Slome of JD Advisors, LLC



Copyright 2026, PrimeMLS, Inc. All rights reserved. This information is deemed reliable, but not guaranteed. The data relating to real estate displayed on this display comes in part from the IDX Program of PrimeMLS. The information being provided is for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Last checked: 2026-07-21 11:38 PM UTC
Neighborhood & Commute
Source: Walkscore
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