300 Commercial Street, Unit 512Boston, MA 02109MLS Number 73578792

  • Price: $610,000
  • Est. Mortgage of $/month
  • 1 Day on Market
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%
$/month over payments
Federal 30-year interest rate: 6.95% last updated on Sep 17, 2026
* All Figures are estimates. Check with your bank or proposed mortgage company for actual interest rates.
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300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109300 Commercial Street Boston MA 02109
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  • 1Bedrooms
  • 1Bathrooms
  • 1900Year Built
  • 577Square Feet

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Welcome home to Boston's waterfront at The Mariner, where the comforts of a full-service elevator building meet harbor living. This inviting one-bedroom residence features an open-concept main living area with high ceilings that flows out to a private, covered balcony, the perfect spot for morning coffee or hosting with a view of the city skyline. Other defining features include central air conditioning, in-unit laundry, and recessed lighting. Residents of The Mariner enjoy 24-hour concierge service, plus access to an oversized, furnished common roof deck with sweeping panoramic views of Boston Harbor. Originally built in 1911 and converted to condos in 1987, the building itself carries the character of Boston's storied waterfront. Recent noteworthy capital improvements within the association include a new cooling tower and boiler, roof, exterior faade coating, and an updated lobby and hallways. Improvements within the unit include a new HVAC system (2023), refrigerator (2023), and dishwasher (2023), washer and dryer (2022). Ideally located just steps from the Historic North End harborwalk, Hanover Street restaurants, the Financial District, and TD Garden. Pets are permitted with trustee approval.

Open Houses

September 19th
Starts: 11:00am
Ends: 1:00pm
September 20th
Starts: 11:00am
Ends: 1:00pm
Listed by Boston Real Estate Group of Compass

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More Info

Basic Information

  • Bedrooms1
  • Mls StatusNew
  • Bathroom1
  • Parcel Number 3343478
  • Unit Number512

Location

  • Address300 Commercial Street
  • Building Number300
  • CountySuffolk
  • StateMA
  • StreetCommercial Street
  • TownBoston
  • Zip02109

Utilities

  • Cooling Heat Pump
  • Cooling YN Yes
  • Heat SystemYes
  • Heating Heat Pump
  • Sewer Public Sewer
  • Water Source Public

Amenities

  • Accessibility Features Accessible Entrance
  • Amenities
    • Highway Access
    • Medical Facility
    • Park
    • Pool
    • Public School
    • Public Transportation
    • Shopping
    • T-Station
    • University
    • Walk/Jog Trails
  • Appliances IncludedRange, Dishwasher, Disposal, Refrigerator, Washer, Dryer
  • Association Amenities Elevator(s)
  • Other AmenitiesGarden, Waterfront, Water View
  • PetsYes w/ Restrictions
  • Security Features Doorman, Concierge

Tax Information

  • Tax Assessed Value $533,900
  • Tax Year 2026
  • Taxes$6,620

Rooms

  • Bathrooms Total Decimal 1
  • Full Bath1

Building

  • BasementN
  • Building Area Units Square Feet
  • Common Walls Corner
  • Construction Materials Brick, Stone
  • Entry Level 5
  • Patio And Porch Features Patio - Enclosed
  • Rooms3
  • Stories1
  • Utilities For Electric Range
  • Year Built1900
  • Year Built Details Approximate
  • Year Built Effective 1986
  • Year Built Source Public Records

Water Body

  • WaterfrontYes
  • Waterfront Features Waterfront, Harbor

Parking

  • Parking Spaces
  • Open Parking YN Yes
  • Parking Features On Street

Basic Information

  • List Price$610,000
  • MLS Number73578792
  • Modification Date09/18/2026
  • Property SubTypeCondominium

Interior

  • Flooring Parquet

Exterior

  • Exterior Features Patio - Enclosed
  • RoofRubber

Property Information

  • Square Feet577
  • Building Area Source Public Records
  • Living Area 577
  • Lot Size Units Acres
  • Property Attached YN Yes
  • Structure Type Mid-Rise

Other

  • Association Fee $680
  • Association Fee Frequency Monthly
  • Association Fee Includes
    • Insurance
    • Security
    • Sewer
    • Snow Removal
    • Trash
    • Water
  • Date Listed09/17/2026
  • Farm Land Area Units Square Feet

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The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. (MLSPIN) from third party sources, including sellers, lessors and public records, and were compiled by MLSPIN. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLSPIN and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

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