18 Congress St, Unit 308

Portsmouth, NH 03801

$1,250,000
Price
2
Beds
1,253 Sq. Ft.
$998 / Sq. Ft.
1,253
Sq. Ft.
$998
per Sq. Ft.

Description

Welcome to 18 Congress Street set in the heart of Market Square in historic downtown Portsmouth. This building is one of the only modern luxury condominium residences located directly within the historic core of the city. From this address you have easy access to the waterfront, renowned restaurants, charming cafés, boutique shops, and cultural landmarks such as The Music Hall and Jimmy’s Jazz & Blues Club. Whether you’re grabbing morning coffee at Popovers or La Maison Navarre, you’ll be surrounded...Welcome to 18 Congress Street set in the heart of Market Square in historic downtown Portsmouth. This building is one of the only modern luxury condominium residences located directly within the historic core of the city. From this address you have easy access to the waterfront, renowned restaurants, charming cafés, boutique shops, and cultural landmarks such as The Music Hall and Jimmy’s Jazz & Blues Club. Whether you’re grabbing morning coffee at Popovers or La Maison Navarre, you’ll be surrounded by the best of city living from the moment your day begins. This 3rd floor residence offers an open-concept living space filled with natural light, charming views of quiet Porter Street, & a gas fireplace for cozy evenings. Two spacious bedrooms and two full bathrooms provide comfort and privacy, while a 3rd small room offers an opportunity for an office space or large walk-in closet or pantry. Everyday convenience is built in with in-unit laundry, secure elevator access, and one deeded parking space in the private garage. Residents also enjoy access to the rooftop deck which is perfect for entertaining, taking in the skyline, or watching Portsmouth’s fireworks. Updates include fresh interior paint, new kitchen appliances, & new carpet. Opportunities to own in this building are few and far between - Don’t miss the chance to make this one-of-a-kind downtown home part of your everyday life.
  1. Listed by Erin Proulx • KW Coastal and Lakes & Mountains Realty/Portsmouth • Erin@ProulxRealEstate.com

Property Details for 18 Congress Street, Unit 308

Zoning
CBB
LISTING UPDATED: 12/02/2025 08:26 PM

Property Details for 18 Congress Street, Unit 308

StatusActive
MLS #5068923
Days on Market46
Taxes$13,707 / year
HOA Fees$525 / month
Condo/Co-op Fees$1,050 one time
Compass TypeCondo
MLS TypeResidential / Condo
Year Built2006
CountyRockingham County

Location

Listing Courtesy of KW Coastal and Lakes & Mountains Realty/Portsmouth
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Building Information for 18 Congress Street, Unit 308

Building/Complex18 Congress StFloor-Stories1Residences24Pet Policy-Pet Policy Details-Year Built2006

Payment Calculator

$8,894 per month

30 year fixed, 6.28% Interest

Principal and Interest

$6,177

Property Taxes

$1,142

HOA Dues

$1,575

The Payment Calculator is for illustrative purposes only.

Property Information for 18 Congress Street, Unit 308

Summary
Location and General Information
  • City: Portsmouth
  • County: NH-Rockingham
  • Latitude: 43.076491347202101
  • Longitude: -70.758314271163897
  • Road Frontage: TBD
  • Seasonal: No
  • State: NH
  • Street Designation: Street
  • Map: 117
  • Zip Code: 03801
Taxes and HOA Information
  • Condo Fees: Yes
  • Fee: $525.00
  • Fee 2: $1,050.00
  • Fee 2 Frequency: One-Time
  • Fee 2 Includes: Buy In Fee
  • Fee Frequency: Monthly
  • Fee Includes: Landscaping, Sewer, Trash, Water, Condo Association Fee
  • Tax Year: 2024
  • Taxes TBD: No
Parking
  • Garage: Yes
  • Garage Capacity: 1.00
  • Driveway: Other
Property
Lot Information
  • Block: 37
  • Lot: 308
  • Lot Features: City Lot, Condo Development, Sidewalks, Street Lights, In Town, Near Shopping, Near Public Transportatn, Near School(s)
Property and Assessments
  • Assessment Amount: $1,226,000
  • Assessment Year: 2024
  • Property Class: Residential
  • Property Type: Condo
  • Construction Status: Existing
  • Flood Zone: No
  • PreConstruction: No
  • Surveyed: Yes
  • Year Built: 2006
Utilities
  • Electric: 200+ Amp Service, Circuit Breaker(s)
  • Sewer: Public
  • Water Source: Public
  • Utilities: Other
  • Internet: Cable Internet
Interior and Exterior Features
Exterior Features
  • Color: Brick
  • Construction Materials: Brick Exterior
  • Roof: Asphalt Shingle
Interior Features
  • Appliances: Dishwasher, Dryer, Microwave, Refrigerator, Washer, Electric Stove
  • Basement: No
  • Flooring: Carpet, Hardwood, Tile
  • Heating: Natural Gas, Forced Air
  • Cooling: Central AC
  • Total Stories: 1
Multi Family
Multi-Family Information
  • Units Per Building: 24

Property History for 18 Congress Street, Unit 308

DateEvent & SourcePriceAppreciation
Nov 7, 2025

Listed (Active)

New England Real Estate Network #5068923

$1,250,000—
DateEvent & SourcePrice
11/07/2025

Listed (Active)

New England Real Estate Network #5068923

$1,250,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Schools near 18 Congress Street, Unit 308

This home is within Portsmouth School District.
Rating
School
Type
Grades
Distance
Little Harbour School
Public - K to 5
Portsmouth Middle School
Public - 6 to 8
Portsmouth High School
Public - 9 to 13
St Patrick School
Private - PK to 8
Rating
School
Distance
Little Harbour School
PublicK to 5

Portsmouth Middle School
Public6 to 8

Portsmouth High School
Public9 to 13

St Patrick School
PrivatePK to 8

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

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More information about 18 Congress Street, Unit 308, Portsmouth, NH 03801

18 Congress Street, Unit 308 is a condo for sale in Portsmouth, NH 03801. This property was listed for sale on November 7, 2025 by KW Coastal and Lakes & Mountains Realty/Portsmouth, it's currently listed at $1,250,000. This listing's school district is Portsmouth School District. Nearby schools include Little Harbour School, Portsmouth Middle School and Portsmouth High School. 18 Congress Street, Unit 308 is a 2-bed, 2-bath, 1,253 sqft condo built in 2006.

No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of KW Coastal and Lakes & Mountains Realty/Portsmouth

Copyright 2025 PrimeMLS, Inc. 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 12/24/2025 02:22 AM