300 Commercial St # 512, Boston MA 02109
Boston, MA 02109 • Waterfront
$550,000
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Sale Statistics
Sale Overview
Original List Price:
$539,900
Final Sale Price:
$550,000
Difference:
+$10,100 (+1.9%)
Performance Metrics
101.9%
List to Sale Ratio
Sold above asking price
13
Days on Market
Quick sale
Price per Square Foot Analysis
Original $/sq ft:
$936
Sale $/sq ft:
$953
This property sold for $953 per square foot
Sale Summary
This property sold for 1.9% above the original asking price, indicating strong buyer demand.
With only 13 days on market, this was a quick sale compared to typical market conditions.
About this home
Oasis in the City! Come view this amazing condo at The Mariner on Boston's Waterfront. The entryway leads to an open living/dining room that flows into the fully applianced kitchen & newly renovated bathroom. Enjoy the incredible PRIVATE 100 square foot Covered Balcony off living room with ceiling-to-floor sliding glass doors. W/D in unit, high ceilings & Bike storage in basement. The residents are welcome to relax on the oversized common furnished roof deck w/ striking panoramic water & city views, perfect spot for dinner. In 2020 the building went through major renovations including, NEW central heating system, cooling tower/air handler, main roof, exterior façade coating, common roof deck & enhanced lobby & common area hallways. The Mariner is a full-service elevator building offering 24-hour concierge. Superb location just steps to the Historic North End, Fin'l District, Faneuil Hall, TD Garden, Downtown, Restaurants/Shops & Parks. Seller will consider offers bet $540,000-$580,000
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Public Records & Permits
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Recently Sold Nearby
Property History
Market Insights
11.5%
Price Range
14
Total Days on Market
1
Previous Sales
Property Timeline
Current Active Listing - MLS #73578792
Full transaction history available when tracking began
Currently Listed
Sep 17, 2026
$610,000
MLS #73578792 - Active
Sold
Apr 14, 2022
$550,000
Property sold
Days on Market: 14
Listed for Sale
Mar 7, 2022
$539,900
Original listing
Agent: Darcy Bento
Office: Bento Real Estate Group, Inc.
Previous Transaction - MLS #72074655
Full transaction history available when tracking began
Previously Sold
Nov 4, 2016
$540,000
MLS #72074655
| Date | Event | Price | Change | $/sqft | Details |
|---|---|---|---|---|---|
| 09/17/2026 | 🏡 Currently Listed | $610,000 | - | - | MLS #73578792 - Active |
| 04/14/2022 | ✓ Sold | $550,000 | - | - | Property sold |
| 03/07/2022 | 🏠 Listed for Sale | $539,900 | - | - | Original listing |
| 11/04/2016 | 🏷️ Previously Sold | $540,000 | - | - | MLS #72074655 |
Tax History
| Year | Taxes | Assessment |
|---|---|---|
| 2021 | $5,583 | $523,200 |
Financial Details
Annual Property Tax
$5,583
Tax Year 2021
HOA Fee
$604
Monthly
Assessed Value
$523,200
Facts & Features
Central AC
Home Facts
Type
Residential
Style
Condominium
Year Built
1900
Living Area
577 sq ft
Lot Size
0.01 acres
Bedrooms
1
Full Baths
1
Total Rooms
2
Interior
Heating
Heat Pump
Cooling
Central Air
Flooring
Tile, Hardwood, Flooring - Stone/ceramic Tile
Appliances
Range, Dishwasher, Disposal, Refrigerator, Washer, Dryer
Fireplace
None
Basement
Y
Laundry
None
Features
Bathroom - Full, Recessed Lighting, Closet - Double, Foyer
Exterior
Construction
None
Architecture
None
Roof
Rubber
Features
Balcony / Deck, Deck - Roof, Covered Patio/deck
Pool
None
Spa
None
Fencing
None
Patio/Porch
Deck - Roof, Covered
Parking
Features
None
Utilities
Electric
Circuit Breakers
Water
Public
Sewer
Public Sewer
Gas
None
Other
None
Financial
Annual Tax
$5,583
Assessed Value
$523,200
HOA & Community
HOA Fee
$604 Monthly
Fee Includes
Water, Sewer, Insurance, Security, Maintenance Structure, Maintenance Grounds, Snow Removal, Reserve Funds
Amenities
Elevator(s)
Optional Fee Includes
None
Owner-Occupied Units
77
Pets
Yes
MA Disclosures
Seller Disclosures
None
Additional Details
Possession
None
Accepted Financing
None
Structure Type
["Mid-Rise"]
Unit/Building
512
Sq Ft Source
Public Record
Sq Ft Disclosures
Doesnt include private balcony.
Documents
None
County
Suffolk
Total market time (incl. prior listings)
14 days
Property Overview
Property Type
Condominium
Listing Type
Sold
Year Built
1900
Bedrooms
1
Full Bathrooms
1
Living Area
577 sq ft
Total Rooms
2
Stories
1
Entry Level
5
Floor Layout
Interactive room guide
Floor Layout
Dimensions9 x 8
FeaturesFlooring - Stone/Ceramic Tile, Recessed Lighting
Dimensions20 x 13
FeaturesCeiling Fan(s), Flooring - Hardwood, Balcony / Deck, Recessed Lighting, Slider
Dimensions11 x 7
FeaturesFlooring - Wall to Wall Carpet, Recessed Lighting
Display Options
Outdoor Areas
Patio & porchDeck - Roof, Covered
Room Markers
BABathroom (4)
BRBedroom (5)
DDining (1)
KKitchen (1)
LLiving (2)
OOffice (1)
Conceptual diagram based on MLS room data. It is not to scale and is not a substitute for architectural plans or on-site measurements.
Interior Features
Flooring:
Tile, Hardwood, Flooring - Stone/Ceramic Tile
Appliances:
Range, Dishwasher, Disposal, Refrigerator, Washer, Dryer
Interior Features:
Bathroom - Full, Recessed Lighting, Closet - Double, Foyer
Windows:
Basement:
Y
Laundry:
Security:
Concierge
Construction & Materials
Year Built:
1900
Structure Type:
Mid-Rise
Exterior Materials:
Roof:
Rubber
Foundation:
Stories:
1
Heating, Cooling & Utilities
Heating:
Heat Pump
Cooling:
Central Air
Hot Water:
Water Source:
Public
Sewer:
Public Sewer
Energy Features:
Exterior & Lot
Exterior Features:
Balcony / Deck, Deck - Roof, Covered Patio/Deck
Patio & Porch:
Deck - Roof, Covered
Fencing:
Other Structures:
Lot Features:
Road Surface:
Parking & Garage
Parking Features:
Nearby Schools
School District
Boston School District local
C-
Where Graduates Go
Class of 2021
52%
attend college
38%
4-Year
14%
2-Year
7%
Out of State
7%
Working
School Safety
2024-25
3.7%
Above Average
3.2%
Suspensions
0.3%
In-School
0.5%
Emergency
1.8% below state avg
Elementary Schools
10 schools
St. John Elementary School
< 0.1 mi
Grades PK-08
A
Eliot K-8 Innovation School
0.1 mi
|
#47 of 352
|
Score: 57.5
Improved 3 spots from last year
-0.7 below state avg
779 students
Diverse
Strong Attendance
Grades PK-08
East Boston Central Catholic School
0.8 mi
Grades PK-08
B+
Alighieri Dante Montessori School
0.9 mi
|
#5 of 12
|
Score: 45.2
Improved 124 spots from last year
-13 below state avg
100 students
Diverse
Rising School
Strong Attendance
Grades PK-06
D
Adams Elementary School
0.9 mi
|
#770 of 825
|
Score: 31.0
Dropped 91 spots from last year
-27.2 below state avg
222 students
Moderate
Grades PK-06
C
Harvard-Kent Elementary School
0.9 mi
|
#593 of 825
|
Score: 41.1
Dropped 185 spots from last year
-17.1 below state avg
315 students
Very Diverse
Diverse Student Body
Grades PK-06
D
McKay K-8 School
0.9 mi
|
#332 of 352
|
Score: 27.4
Dropped 36 spots from last year
-30.8 below state avg
599 students
Less Diverse
Grades PK-08
C+
Mario Umana Academy
1.1 mi
|
#11 of 16
|
Score: 26.5
Improved 333 spots from last year
-31.7 below state avg
585 students
Less Diverse
Rising School
Grades PK-08
C-
Kennedy Patrick J Elementary School
1.1 mi
|
#669 of 825
|
Score: 37.4
Improved 48 spots from last year
-20.8 below state avg
285 students
Less Diverse
Rising School
Grades PK-06
Advent School
1.1 mi
Grades K-06
Middle Schools
10 schools
Middle School Academy
2.1 mi
F
Higginson/Lewis K-8 School
3.5 mi
|
#349 of 352
|
Score: 23.2
Improved 3 spots from last year
-35 below state avg
246 students
Diverse
Grades 03-08
A
Uncommon Schools - Roxbury Preparatory Dorchester Campus Middle School
3.8 mi
|
#4 of 16
|
Score: 42.5
Improved 187 spots from last year
-15.7 below state avg
1,225 students
Diverse
Rising School
College Ready Curriculum
Grades 05-08
Nativity Prep School
3.9 mi
Grades 05-08
Dearborn Middle School
4.2 mi
Mother Caroline Academy
4.3 mi
Grades 05-08
Epiphany School
5.0 mi
Grades 05-08
C
Ohrenberger School
8.7 mi
|
#266 of 352
|
Score: 35.0
Improved 19 spots from last year
-23.2 below state avg
458 students
Diverse
Diverse Student Body
Grades 03-08
Edwards Middle
1.3 mi
UP Academy
2.1 mi
High Schools
10 schools
D
Charlestown High School
1.2 mi
|
#319 of 346
|
Score: 32.9
Improved 52 spots from last year
-25.4 below state avg
646 students
Diverse
11 sports
• 488 athletes
Early College Program
Rising School
Grades 07-12
C
Quincy Upper School
1.3 mi
|
#279 of 346
|
Score: 44.4
Dropped 7 spots from last year
-13.8 below state avg
575 students
Very Diverse
12 sports
• 208 athletes
Diverse Student Body
Grades 06-12
C-
East Boston High School
1.4 mi
|
#300 of 346
|
Score: 38.2
Improved 36 spots from last year
-20 below state avg
1,181 students
Moderate
14 sports
• 584 athletes
Early College Program
Rising School
Grades 07-12
Newman School
1.8 mi
Grades 07-12
Cathedral High School
1.9 mi
9 sports
• 430 athletes
Grades 07-12
B
Dearborn STEM Academy
3.0 mi
|
#13 of 25
|
Score: 33.4
Improved 356 spots from last year
-24.8 below state avg
565 students
Moderate
10 sports
• 242 athletes
Early College Program
Rising School
Grades 07-12
A-
O'Bryant School of Math & Science
3.0 mi
|
#90 of 346
|
Score: 61.6
Improved 94 spots from last year
+3.4 above state avg
1,518 students
Very Diverse
High Graduation Rate
Rising School
College Ready Curriculum
Diverse Student Body
Grades 07-12
A+
Boston Latin School
3.1 mi
|
#20 of 346
|
Score: 73.7
Improved 60 spots from last year
+15.5 above state avg
2,382 students
Very Diverse
18 sports
• 2,006 athletes
Strong AP Program
High Graduation Rate
Rising School
Strong Athletics
Grades 07-12
C
Ruth Batson Academy
3.3 mi
|
#20 of 25
|
Score: 29.1
Improved 345 spots from last year
-29.1 below state avg
584 students
Diverse
8 sports
• 128 athletes
Early College Program
Rising School
Grades 07-12
A+
Boston Latin Academy
3.7 mi
|
#2 of 25
|
Score: 64.9
Improved 214 spots from last year
+6.7 above state avg
1,669 students
Very Diverse
17 sports
• 1,298 athletes
Strong AP Program
High Graduation Rate
Rising School
Strong Athletics
Grades 07-12
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Location
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Neighborhood
Waterfront
300 Commercial St # 512, Boston MA 02109
Boston, MA 02109
Listing Information
Listing Agent
Darcy Bento
Listing Office
Bento Real Estate Group, Inc.
Office Phone
617-901-9671
Agent MLS ID
BB806826
Office MLS ID
AC0046
Listing Data Updated
Apr 16, 2022 4:06 PM EDT
Listing information is deemed reliable but not guaranteed. Data provided by MLS Property Information Network, Inc. All information should be independently verified.
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