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300 Commercial Street # 603, Boston MA 02109 - Preview 1 300 Commercial Street # 603, Boston MA 02109 - Preview 2 300 Commercial Street # 603, Boston MA 02109 - Preview 3 300 Commercial Street # 603, Boston MA 02109 - Preview 4 300 Commercial Street # 603, Boston MA 02109 - Preview 5 300 Commercial Street # 603, Boston MA 02109 - Preview 6 300 Commercial Street # 603, Boston MA 02109 - Preview 7 300 Commercial Street # 603, Boston MA 02109 - Preview 8 300 Commercial Street # 603, Boston MA 02109 - Preview 9 300 Commercial Street # 603, Boston MA 02109 - Preview 10 300 Commercial Street # 603, Boston MA 02109 - Preview 11 300 Commercial Street # 603, Boston MA 02109 - Preview 12 300 Commercial Street # 603, Boston MA 02109 - Preview 13 300 Commercial Street # 603, Boston MA 02109 - Preview 14 300 Commercial Street # 603, Boston MA 02109 - Preview 15 300 Commercial Street # 603, Boston MA 02109 - Preview 16
300 Commercial Street # 603, Boston MA 02109 - Preview 1 300 Commercial Street # 603, Boston MA 02109 - Preview 2 300 Commercial Street # 603, Boston MA 02109 - Preview 3 300 Commercial Street # 603, Boston MA 02109 - Preview 4 300 Commercial Street # 603, Boston MA 02109 - Preview 5 300 Commercial Street # 603, Boston MA 02109 - Preview 6 300 Commercial Street # 603, Boston MA 02109 - Preview 7 300 Commercial Street # 603, Boston MA 02109 - Preview 8 300 Commercial Street # 603, Boston MA 02109 - Preview 9 300 Commercial Street # 603, Boston MA 02109 - Preview 10 300 Commercial Street # 603, Boston MA 02109 - Preview 11 300 Commercial Street # 603, Boston MA 02109 - Preview 12 300 Commercial Street # 603, Boston MA 02109 - Preview 13 300 Commercial Street # 603, Boston MA 02109 - Preview 14 300 Commercial Street # 603, Boston MA 02109 - Preview 15 300 Commercial Street # 603, Boston MA 02109 - Preview 16

300 Commercial Street # 603, Boston MA 02109

Boston, MA 02109 • North End
$1,695,000
Est. $11,137/month
2
Beds
2
Baths
1,003
Sq Ft
$1,690
Price/Sq Ft
1900
Year Built
Condominium
Type
25
Days on Market
Closed Listed Apr 14, 2025 • MLS# 73359330 Copied!

About this home

Spectacular 2 bed/2 bath waterfront residence with unobstructed views of the harbor from every room at the Mariner. The open concept living, kitchen and dining area is perfect for both relaxing and entertaining, with floor-to-ceiling windows opening to a private balcony offering wonderful views overlooking Boston harbor. The sun filled kitchen is equipped with a breakfast bar, granite countertops, custom cabinetry, and high-end appliances. The primary bedroom features its own ensuite bath and walk-in closet. Additional features include in-unit laundry, surround sound, and ample storage space. The Mariner is a premier, 24-hour concierge building offering professional management, garage parking, and a common roof deck with stunning, panoramic views. It offers an unbeatable location on the harbor close to the vibrant dining and shopping scene of the North End, Faneuil Hall, Greenway, TD Garden, Seaport District, Financial District, and quick access to all major highways. 1 garage parking

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Public Records

Current Owner

Owner HARRIS MICHAEL
Mailing Address PO BOX 1960, WAKEFIELD, MA, 01880

Land Use

Use Code 102
Description Condominium
Style Mid Rise

Tax Information

Assessed Value $956,700

Assessment History

Year Land Building Total Change
FY2023 $0 $956,700 $956,700 —

Sale History

Date Price Book/Page
Oct 14, 2022 $490,000 68315/287
Oct 13, 2022 $560,000 68306/56
Jul 26, 2022 $615,000 67994/237
Jul 21, 2022 $525,000 67973/249
Jun 15, 2022 $750,000 67804/232
May 6, 2022 $99 67604/74
Apr 14, 2022 $550,000 67482/190
Feb 4, 2022 $676,000 67130/222
Jan 28, 2022 $1,400,000 67094/139
Aug 23, 2021 $538,000 66140/55

Building Permit History

Issued Type / Work Status Value
May 27, 2026 Electrical Permit
ELECTRICAL
Electrical
Permit #E1853808 		Open $3,800
May 27, 2026 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1855053 		Open $3,000
May 6, 2026 Short Form Bldg Permit
EXTREN
Renovations - Exterior
Permit #SF1833647 		Open $170,988
Apr 17, 2026 Short Form Bldg Permit
INTREN
Renovations - Interior NSC
Permit #SF1839860 		Open $78,350
Feb 10, 2026 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1819141 		Open $1,800
Jan 16, 2026 Electrical Permit
ELECTRICAL
Electrical
Permit #E1797182 		Closed $1,000
Dec 1, 2025 Long Form/Alteration Permit
SPRINK
Fire Protection/Sprinkler
Permit #ALT1795325 		Open $17,400
Nov 19, 2025 Electrical Permit
ELECTRICAL
Electrical
Permit #E1799203 		Closed $8,600
Nov 18, 2025 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1798828 		Closed —
Oct 22, 2025 Short Form Bldg Permit
INTREN
Renovations - Interior NSC
Permit #SF1787303 		Open $29,525
Aug 5, 2025 Short Form Bldg Permit
INTEXT
Interior/Exterior Work
Permit #SF1741213 		Open $35,000
Jul 10, 2025 Electrical Permit
ELECTRICAL
Electrical
Permit #E1745771 		Closed $16,500
Jul 10, 2025 Electrical Permit
ELECTRICAL
Electrical
Permit #E1745667 		Closed $5,700
Jul 7, 2025 Electrical Permit
ELECTRICAL
Electrical
Permit #E1743354 		Open $16,300
Jul 2, 2025 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1743877 		Open —
Jun 16, 2025 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1732773 		Open —
Jun 10, 2025 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1721936 		Closed $6,000
Apr 16, 2025 Short Form Bldg Permit
INTEXT
Interior/Exterior Work
Permit #SF1706631 		Open $188,500
Apr 16, 2025 Short Form Bldg Permit
INTEXT
Interior/Exterior Work
Permit #SF1708055 		Open $67,700
Feb 25, 2025 Short Form Bldg Permit
INTREN
Renovations - Interior NSC
Permit #SF1691773 		Closed $100,000
Jan 23, 2025 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1682999 		Open $1,400
Jan 6, 2025 Long Form/Alteration Permit
FA
Fire Alarm
Permit #ALT1672052 		Closed $121,550
Dec 24, 2024 Short Form Bldg Permit
INTREN
Renovations - Interior NSC
Permit #SF1678888 		Closed $14,350
Nov 25, 2024 Electrical Fire Alarms
FA
Fire Alarm
Permit #EFA1670219 		Closed $60,000
Nov 20, 2024 Short Form Bldg Permit
INTEXT
Interior/Exterior Work
Permit #SF1667043 		Closed $187,500
Feb 22, 2024 Short Form Bldg Permit
EXTREN
Renovations - Exterior
Permit #SF1571980 		Open $453,901
Sep 29, 2023 Electrical Permit
ELECTRICAL
Electrical
Permit #E1529801 		Closed $5,000
Sep 18, 2023 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1524276 		Closed $5,000
Aug 19, 2023 Short Form Bldg Permit
OTHER
Other
Permit #SF1502138 		Open $30,000
May 22, 2023 Electrical Permit
ELECTRICAL
Electrical
Permit #E1466023 		Open $4,400
May 8, 2023 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1465575 		Open $1,500
Aug 3, 2022 Short Form Bldg Permit
INTEXT
Interior/Exterior Work
Permit #SF1353383 		Open $388,270
Apr 11, 2022 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1319939 		Open $1,000
Mar 28, 2022 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1307928 		Closed $800
Mar 4, 2022 Electrical Low Voltage
LVOLT
Low Voltage
Permit #ELV1299841 		Open $100
Feb 23, 2022 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1297209 		Closed $10,000
Feb 4, 2022 Electrical Permit
ELECTRICAL
Electrical
Permit #E1292030 		Closed $25,000
Feb 4, 2022 Electrical Fire Alarms
FA
Fire Alarm
Permit #EFA1292032 		Open $750
Feb 3, 2022 Electrical Low Voltage
LVOLT
Low Voltage
Permit #ELV1292033 		Open $500
Jan 21, 2022 Short Form Bldg Permit
INTREN
Renovations - Interior NSC
Permit #SF1287405 		Closed $17,184
Nov 10, 2021 Plumbing Permit
PLUMBING
Plumbing
Permit #PL1252857 		Open $1,000
Jun 1, 2021 Electrical Permit
ELECTRICAL
Electrical
Permit #E1203106 		Closed $850
Data: City of Boston Open Data (Analyze Boston)

Municipal Context: BOSTON

Match: address_condo (90.0% confidence) · Data as of Jun 1, 2026

Property Overview

Property Type
Condominium
Listing Type
For Sale
Year Built
1900
Bedrooms
2
Full Bathrooms
2
Living Area
1,003 sq ft
Total Rooms
5
Stories
1
Entry Level
6

Sale Statistics

Sale Overview
Original List Price: $1,695,000
Final Sale Price: $1,695,000
Difference: +$0 (+0.0%)
Performance Metrics
100.0%
List to Sale Ratio
Sold at asking price
25
Days on Market
Quick sale
Price per Square Foot Analysis
Original $/sq ft: $1,690
Sale $/sq ft: $1,690
This property sold for $1,690 per square foot
Sale Summary

This property sold exactly at the asking price.

With only 25 days on market, this was a quick sale compared to typical market conditions.

Nearby Sales Comparison

Based on 49 similar properties sold within 0.5 miles in the last 90 days

This Property
$1,690/sq ft
Area Average
$424/sq ft
Difference
+298.1%

This property sold for significantly more per square foot than similar nearby properties, suggesting premium features or condition.

Facts & Features

1 Car Garage
Central AC

Home Facts

Type Residential
Style Condominium
Year Built 1900
Living Area 1,003 sq ft
Bedrooms 2
Full Baths 2
Total Rooms 5

Interior

Heating Forced Air
Cooling Central Air
Flooring None
Appliances None
Fireplace None
Basement N
Laundry In Unit
Features None

Exterior

Construction None
Architecture None
Roof None
Features Deck - Roof, Balcony
Pool None
Spa None
Fencing None
Patio/Porch Deck - Roof

Parking

Garage Spaces 1
Has Garage Yes
Features None
Total Spaces 1

Utilities

Electric None
Water Public
Sewer Public Sewer
Gas None
Other None

Financial

Annual Tax $14,485
Assessed Value $1,239,500

Interior Features

Flooring:
Appliances:
Interior Features:
Windows:
Basement: N
Laundry: In Unit
Security: Concierge

Construction & Materials

Year Built: 1900
Effective Year (Renovated): 1987
Structure Type: High-Rise
Exterior Materials:
Roof:
Foundation:
Stories: 1

Heating, Cooling & Utilities

Heating: Forced Air
Cooling: Central Air
Hot Water:
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

Exterior Features: Deck - Roof, Balcony
Patio & Porch: Deck - Roof
Fencing:
Other Structures:
Lot Features:
Road Surface:

Parking & Garage

Garage Spaces: 1
Total Parking Spaces: 1
Parking Features:

Location

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Neighborhood

North End

300 Commercial Street # 603, Boston MA 02109

Boston, MA 02109

Walkability

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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
E

Elementary Schools

10 schools
St. John Elementary School
0.1 mi
Grades PK-08
A
Eliot K-8 Innovation School
0.1 mi | #48 of 352 | Score: 57.2
Improved 2 spots from last year
-1.1 below state avg
784 students Diverse
Strong Attendance
Grades PK-08
East Boston Central Catholic School
0.8 mi
Grades PK-08
B+
Alighieri Dante Montessori School
0.8 mi | #5 of 12 | Score: 45.3
Improved 124 spots from last year
-12.9 below state avg
109 students Diverse
Rising School
Grades PK-06
D
Adams Elementary School
0.9 mi | #767 of 824 | Score: 31.2
Dropped 88 spots from last year
-27 below state avg
237 students Moderate
Grades PK-06
C
Harvard-Kent Elementary School
0.9 mi | #589 of 824 | Score: 41.5
Dropped 181 spots from last year
-16.7 below state avg
334 students Very Diverse
Diverse Student Body
Grades PK-06
D
McKay K-8 School
0.9 mi | #332 of 352 | Score: 27.6
Dropped 36 spots from last year
-30.7 below state avg
640 students Less Diverse
Grades PK-08
C+
Mario Umana Academy
1.0 mi | #11 of 16 | Score: 26.9
Improved 333 spots from last year
-31.3 below state avg
634 students Less Diverse
Rising School
Grades PK-08
C-
Kennedy Patrick J Elementary School
1.1 mi | #670 of 824 | Score: 37.5
Improved 47 spots from last year
-20.7 below state avg
279 students Less Diverse
Rising School
Grades PK-06
A-
Warren-Prescott K-8 School
1.1 mi | #85 of 352 | Score: 51.3
Improved 4 spots from last year
-7 below state avg
507 students Diverse
Grades PK-08
M

Middle Schools

10 schools
Middle School Academy
2.2 mi
F
Higginson/Lewis K-8 School
3.5 mi | #349 of 352 | Score: 23.6
Improved 3 spots from last year
-34.6 below state avg
213 students Diverse
Grades 03-08
A
Uncommon Schools - Roxbury Preparatory Dorchester Campus Middle School
3.9 mi | #4 of 16 | Score: 41.9
Improved 187 spots from last year
-16.3 below state avg
1,126 students Diverse
Rising School College Ready Curriculum
Grades 05-08
Nativity Prep School
4.0 mi
Grades 05-08
Dearborn Middle School
4.3 mi
Mother Caroline Academy
4.3 mi
Grades 05-08
Epiphany School
5.0 mi
Grades 05-08
C
Ohrenberger School
8.7 mi | #265 of 352 | Score: 34.9
Improved 20 spots from last year
-23.3 below state avg
477 students Diverse
Rising School Diverse Student Body
Grades 03-08
Edwards Middle
1.3 mi
UP Academy
2.2 mi
H

High Schools

10 schools
D
Charlestown High School
1.2 mi | #322 of 346 | Score: 31.0
Improved 49 spots from last year
-27.2 below state avg
754 students Diverse
11 sports • 488 athletes
Early College Program Rising School
Grades 07-12
C
Quincy Upper School
1.4 mi | #268 of 346 | Score: 44.6
Improved 4 spots from last year
-13.6 below state avg
557 students Very Diverse
12 sports • 208 athletes
High Graduation Rate Diverse Student Body
Grades 06-12
C-
East Boston High School
1.4 mi | #305 of 346 | Score: 37.3
Improved 31 spots from last year
-20.9 below state avg
1,252 students Less Diverse
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
A-
O'Bryant School of Math & Science
3.1 mi | #90 of 346 | Score: 61.1
Improved 94 spots from last year
+2.9 above state avg
1,509 students Very Diverse
High Graduation Rate Rising School College Ready Curriculum Diverse Student Body
Grades 07-12
B
Dearborn STEM Academy
3.1 mi | #13 of 25 | Score: 31.7
Improved 356 spots from last year
-26.6 below state avg
565 students Diverse
10 sports • 242 athletes
Early College Program Rising School
Grades 07-12
A+
Boston Latin School
3.2 mi | #19 of 346 | Score: 73.3
Improved 61 spots from last year
+15.1 above state avg
2,424 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 | #19 of 25 | Score: 27.6
Improved 346 spots from last year
-30.6 below state avg
604 students Diverse
8 sports • 128 athletes
Early College Program Rising School
Grades 07-12
A+
Boston Latin Academy
3.8 mi | #2 of 25 | Score: 63.9
Improved 214 spots from last year
+5.7 above state avg
1,693 students Very Diverse
17 sports • 1,298 athletes
High Graduation Rate Rising School Strong Athletics Diverse Student Body
Grades 07-12
Learn about these ratings
School data provided by BMN Schools

Monthly Payment Calculator

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Total Interest
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Including down payment
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Down: $0
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Monthly Payment Breakdown

Principal & Interest $0
Property Tax $1,207
Homeowners Insurance $200
HOA Fee $1,159/mo
PMI (if <20% down) $0

Loan Summary

Total of 360 payments $0
Total principal paid $0
Total interest paid $0

Rate Impact

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Current Rate
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Payment Over Time

Interest
Principal
Year 1
95% Interest
Year 15
50/50
Year 30
95% Principal
* Estimates only. Actual payments may vary. Consult with a lender for accurate figures.

Property History

Market Insights

27
Total Days on Market

Property Timeline

✓
Sold
May 16, 2025
$1,695,000
Property sold
Days on Market: 27
🏠
Listed for Sale
Apr 14, 2025
$1,695,000
Original listing
Agent: Tracy Campion Office: Campion & Company Fine Homes Real Estate

Price & Status History

Date Event Price Change
Apr 14, 2025 New Listing Added $1,695,000 —

Market Statistics

Days on Market
25 days
Price per Sq Ft
$1,690

Tax History

Year Taxes Assessment
2025 $14,485 $1,239,500

Financial Details

Annual Property Tax
$14,485
Tax Year 2025
HOA Fee
$1,159
Monthly
Assessed Value
$1,239,500

Listing Information

Listing Agent Tracy Campion
Listing Office Campion & Company Fine Homes Real Estate
Agent MLS ID BB904054
Office MLS ID BB5984
Listing Data Updated May 16, 2025 3:49 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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300 Commercial Street # 603, Boston MA 02109 - Photo 1 300 Commercial Street # 603, Boston MA 02109 - Photo 2 300 Commercial Street # 603, Boston MA 02109 - Photo 3 300 Commercial Street # 603, Boston MA 02109 - Photo 4 300 Commercial Street # 603, Boston MA 02109 - Photo 5 300 Commercial Street # 603, Boston MA 02109 - Photo 6 300 Commercial Street # 603, Boston MA 02109 - Photo 7 300 Commercial Street # 603, Boston MA 02109 - Photo 8 300 Commercial Street # 603, Boston MA 02109 - Photo 9 300 Commercial Street # 603, Boston MA 02109 - Photo 10 300 Commercial Street # 603, Boston MA 02109 - Photo 11 300 Commercial Street # 603, Boston MA 02109 - Photo 12 300 Commercial Street # 603, Boston MA 02109 - Photo 13 300 Commercial Street # 603, Boston MA 02109 - Photo 14 300 Commercial Street # 603, Boston MA 02109 - Photo 15 300 Commercial Street # 603, Boston MA 02109 - Photo 16
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