300 Commercial Street #512, Boston, MA 02109
300 Commercial Street #512, Boston, MA 02109
300 Commercial Street #512, Boston, MA 02109
300 Commercial Street #512, Boston, MA 02109
300 Commercial Street #512, Boston, MA 02109
300 Commercial Street #512, Boston, MA 02109
REQUEST A TOUR If you would like to see this home without being there in person, select the "Virtual Tour" option and your agent will contact you to discuss available opportunities.
In-PersonVirtual Tour
Adam Umina

Adam Umina

+1(617) 921-5866
$ 610,000
Est. payment | /mo

1 Bed

1 Bath

577 SqFt

Save
$ 610,000
Est. payment | /mo
Save

1 Bed

1 Bath

577 SqFt

Key Details

Property Type Condo

Sub Type Condominium

Listing Status Active

Purchase Type For Sale

Square Footage 577 sqft

Price per Sqft $1,057

MLS Listing ID 73578792

Bedrooms 1

Full Baths 1

HOA Fees $680/mo

Year Built 1900

Annual Tax Amount $6,620

Tax Year 2026

Property Sub-Type 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.

Location

State MA

County Suffolk

Zoning RES

Direction Commercial Street across from Union Wharf

Rooms

Basement N

Interior

Heating Heat Pump

Cooling Heat Pump

Flooring Parquet

Appliance Range, Dishwasher, Disposal, Refrigerator, Washer, Dryer

Laundry In Unit

Exterior

Exterior Feature Patio - Enclosed

Community Features Public Transportation, Shopping, Pool, Park, Walk/Jog Trails, Medical Facility, Highway Access, Public School, T-Station, University

Utilities Available for Electric Range

Waterfront Description Waterfront,Harbor

Roof Type Rubber

Garage No

Building

Story 1

Sewer Public Sewer

Water Public

Others

Pets Allowed Yes w/ Restrictions

Senior Community false

Listed by Compass

GET MORE INFORMATION

Adam Umina
Adam Umina

Broker License ID: 9569629

+1(617) 921-5866

9 Babcock St, Brookline, Massachusetts 02446, USA

First Name*
Last Name*
Phone*
Message

By checking this box, I agree by electronic signature to the Electronic Disclosure Consent Agreement; to receive recurring marketing communication from Metro Sales Advisors, including auto-dialed calls, texts, and artificial/prerecorded voice messages (message frequency varies; data rates may apply; reply "STOP" to opt-out of texts or "HELP" for assistance); and to the Terms of Service and Privacy Policy of this website. Consent not required to make a purchase. I understand that I can call to obtain direct assistance.

NEARBY SCHOOLS & PROPERTIES

MORTGAGE CALCULATOR

Estimates start with today's 30-year fixed rate and average Brookline and Boston tax rates. Adjust the price, down payment, and rate to match your situation, and open Advanced to add insurance and condo fees. Owner-occupants may qualify for a residential exemption that lowers the tax line. Rates updated September 2026.
$
$
%
%
$ /year
%
Advanced
Payment
Schedule
Your mortgage payments over 30 years will add up to $0.
Get the real monthly cost for this home!
First Name
Last Name
Phone*

By checking this box, I agree by electronic signature to the Electronic Disclosure Consent Agreement; to receive recurring marketing communication from Metro Sales Advisors, including auto-dialed calls, texts, and artificial/prerecorded voice messages (message frequency varies; data rates may apply; reply "STOP" to opt-out of texts or "HELP" for assistance); and to the Terms of Service and Privacy Policy of this website. Consent not required to make a purchase. I understand that I can call to obtain direct assistance.

Go tour this home

300 Commercial Street #512

Get your guide

Avoid costly mistakes and buy with confidence. Get the essential guide every home buyer should read first.

Name*
Phone*

By checking this box, I agree by electronic signature to the Electronic Disclosure Consent Agreement; to receive recurring marketing communication from Metro Sales Advisors, including auto-dialed calls, texts, and artificial/prerecorded voice messages (message frequency varies; data rates may apply; reply "STOP" to opt-out of texts or "HELP" for assistance); and to the Terms of Service and Privacy Policy of this website. Consent not required to make a purchase. I understand that I can call to obtain direct assistance.

How to buy a home
Quick Market Search for Greater Boston
There are 17 quick searches