80 Constitution Avenue Portsmouth, NH 03801 | 5114046 | LandVest Christie's

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 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.

Property Details

Interior Features

Exterior Features

Utilities and Appliances

Community

Contact Us
Schedule a Visit

Schedule A Visit

Broker Reciprocity

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, 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 October 14, 2026 11:09 AM UTC

Name

Your Email Address

Phone

Message Send me the deed for 80 Constitution Avenue Portsmouth NH 03801 (ID#:5114046)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Name

Your Email Address

Phone

Message Send me the survey or tax map for 80 Constitution Avenue Portsmouth NH 03801 (ID#:5114046)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Name

Your Email Address

Phone

Message I would like more information for 80 Constitution Avenue Portsmouth NH 03801 (ID#:5114046)

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

LandVest, Inc. d/b/a LandVest is a real estate brokerage firm licensed to do business in Massachusetts (4981), New Hampshire (40230), Maine (AC90600372), Vermont (083.0000879), Connecticut (0751564), New York (109934809), Rhode Island (0018296), Pennsylvania (RBR002554), Virginia (226027650), North Carolina (C36273), South Carolina (23538), Georgia (47452), Alabama (000175978-0), Florida (CQ1073185), Louisiana (995719364). Mississippi (C-24572), Michigan (6505384050), Minnesota (40955160), Idaho (CO57308), Nebraska (20240652), Wisconsin (936694-91), West Virginia (Jonathan McGrath, Broker - WVB240301046), Wyoming (265200), Washington (19838), Oregon (201204938), Tennessee (TBD).

LandVest’s Residential Brokerage Division is an affiliate of At World Properties LLC and Christies International Real Estate.

All information provided herein has been obtained from sources believed reliable, but may be subject to errors, omissions, change of price, prior sale, or withdrawal without notice.

New York State Fair Housing Notice
New York State Standard Operating Procedures

LandVest fully supports the principles of the Fair Housing Act and the Equal Opportunity Act.