New ConstructionOpen House 5/27 11am - 3pm
80 Constitution Avenue # 307
Portsmouth, NH, 03801 $ 539,900
Bedrooms1 Baths1.0 Sq 833 Monthly Estimate*
$ 3,324
Listed by Janet Slome, JD Advisors, LLC, 603-919-0645, jslome@jdadvisors.com
for $539,900 with 1 bedroom and 1 full bath. This 833 square foot condo was built in 2025.
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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Open House
5/27/2026 11:00 AM - 3:00 PM
5/28/2026 11:00 AM - 3:00 PM
5/30/2026 11:00 AM - 3:00 PM
5/31/2026 11:00 AM - 3:00 PM
80 Constitution Avenue # 307 Portsmouth, NH
* Some states or local ordinances may prohibit Open Houses at this time, please confirm with your Weichert agent or local rep to confirm
FeaturesInteriorInterior Amenities Kitchen Island Kitchen/Dining Laundry Hook-ups Living/Dining Primary BR w/ BA Walk-in Closet Smart Thermostat
Basement No
Flooring Ceramic Tile Manufactured
Beds 1
Total Rooms 4
Total Number of Units 95
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GeneralRoad Frontage TBD
Sewer Public Sewer On-Site
Heating Electric Heat Pump
Cooling Central AC
Utilities Cable at Site Underground Utilities
Roof Membrane
Appliances ENERGY STAR Qual Dishwshr ENERGY STAR Qual Dryer Microwave Electric Range ENERGY STAR Qual Fridge ENERGY STAR Qual Washer
Pets Allowed Cats OK Dogs OK Number Limit
Garage No
Flood Zone No
Zoning Residential
HOA Fee 392
3/4 Baths 0
Full Baths 1
Half Baths 0
Bathrooms 1
Year Built 2025
Electric 150 Amp Service
Style Flat Garden
Stories Count 1
Construction Status New Construction
Type Condo
Block 0
Condo Name Sage Portsmouth
Unit Number 307
Condo Fees Yes
Assoc Fee Paid Per Monthly
Status Detail 0
Covenants Yes
Construction Materials Cement Exterior
Directions 80 Constitution Avenue Portsmouth NH 03801 I95 North - Exit 3 Right at lights Right at second lights onto Peverley Hill Road. Next lights Right onto Banfield Road. First Stop Sign (three way Stop)
High School Portsmouth High School
City Portsmouth
School District Portsmouth
Seasonal No
Elementary School Little Harbor School
Middle School Portsmouth Middle School
DOM 22
Price Per Sq Ft Total AG 648.14
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ExteriorLot Features Condo Development
Driveway Common/Shared Paved
Lot Size Area 0
Water Source Public Water On-Site
Parking Features Assigned On-Site Parking Spaces 2
Foundation Poured Concrete
Lot 0
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* Excluded FeaturesList Byjslome@jdadvisors.comEmail
Affordability Calculator
- Monthly Principal & Interest
- $3,324
- Monthly Property Taxes
- --
- Monthly Home Insurance
- --
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
Learn more about how to save NearbyCondo listings in Portsmouth, NH
Average List Price $924,222
Percent of Sale Price 71%
About Portsmouth, NH 21,424 Population
3% Since 2002
$ 73,929 Median Income
42.32 Median Age
19% Households with Children
Trends Information provided by ATTOM Data Solutions.
1782400 Elementary School
451608 Middle School
Portsmouth High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 4/2/2026 | $539,900 | | Listed Price |