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Gerry Leo
REALTOR®
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300 Commercial Street, Unit 512, Boston, MA 02109

$610,000
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Pending
BEDS1 BATHS1 full SQUARE FEET577 MLS#73578792
STATUSPending PROPERTY TYPEResidential - Condominium

Property Description

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 façade 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.

300 Commercial Street, Unit 512 | MLS# 73578792

This condo located at 300 Commercial Street, Unit 512, Boston, MA 02109 is currently listed for sale with an asking price of $610,000. This property was built in 1900 and has 1 bedrooms and 1 full baths with 577 sq. ft. Search Boston real estate on gerryleo.masiellogrouprealestate.com today.

Property Features

Property Type: Residential - Condominium
Basement: N
Cooling: Heat Pump
Heating: Heat Pump
Roof Type: Rubber
Stories: 1.0
Taxes: $6,620
Year Built: 1900

Amenities

Patio - Enclosed

Feature Descriptions

Accessibility: Accessible Entrance
Appliances: Range, Dishwasher, Disposal, Refrigerator, Washer, Dryer
Association Amenities: Elevator(s)
Association Fee: $680.42/Monthly
Association Fee Includes: Water, Sewer, Insurance, Security, Snow Removal, Trash
Building Area Total: 577
Common Walls: Corner
Community Features: Public Transportation, Shopping, Pool, Park, Walk/Jog Trails, Medical Facility, Highway Access, Public School, T-Station, University
Compensation Based On: N/A
Compensation Broker Transaction: N/A
Compensation Buyer Agency: N/A
Compensation Sub Agency: N/A
Compensation Sub Agency Offered: N/A
Days on Site: 58
Exterior: Brick, Stone
Flooring: Parquet
HeatingY/N: 1
Laundry: In Unit
Open Parking Y/N: Yes
Parcel Number: 3343475
Parking Features: On Street
Parking Total: 0
Patio And Porch: Patio - Enclosed
Pets Allowed: Yes w/ Restrictions
Property Attached Y/N: 1
Rooms Total: 3
Security Features: Doorman, Concierge
Sewer: Public Sewer
Structure Type: Mid-Rise
Units: 105
Utilities: for Electric Range
Water: Public
Waterfront Features: Waterfront, Harbor

Listed By / Shown By

Listed By

Agency Name: Compass
Agent Name: Boston Real Estate Group
Agency Phone: 617-206-3333

Shown By

Agent Name: Gerry Leo
Agent Phone:
Agency Title: Better Homes and Gardens Real Estate The Masiello Group

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Estimated Payment

$ 2,087.18 per month $1,357.60 Principal & Interest $551.67 Property Tax $177.92 Homeowner's Insurance

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Disclaimer: All information deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) or information provider(s) shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. Listing(s) information is provided 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. Information on this site was last updated 11/14/2026. The listing information on this page last changed on 11/14/2026. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of Delta Media Group MLS (last updated Sat 11/14/2026 12:02:33 AM EST) or MLSPIN MLS (last updated Fri 11/13/2026 11:38:33 PM EST) or Prime MLS (last updated Fri 11/13/2026 2:36:24 PM EST) or MREIS (last updated Fri 11/13/2026 11:55:16 PM EST). Real estate listings held by brokerage firms other than Better Homes and Gardens Real Estate The Masiello Group may be marked with the Internet Data Exchange logo and detailed information about those properties will include the name of the listing broker(s) when required by the MLS. All rights reserved.
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