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21 1/2 Mount Vernon St # 3, Boston MA 02125

Boston, MA 02125 • Dorchester
$4,250
Est. $221/month
4
Beds
2
Baths
1,300
Sq Ft
$3
Price/Sq Ft
3,100
Lot Sq Ft
1905
Year Built
Apartment
Type
14 hours 41 minutes
Time on Market
Active Listed Mar 28, 2026 • MLS# 73493166 Copied!

About this home

Available September 1st! Second floor 4BR / 2 Bath renovated in 2022. Situated in Dorchester's 'Polish Triangle', just 7 minutes walking distance to the JFK Red Line station and minutes to restaurants nearby. Hard to find features including in-unit laundry, private outdoor space, and two full bathrooms. Hardwood floors throughout all living areas, great natural lighting, and a short walk to retail areas in South Bay. Small pets may be approved on a case by case basis. Gas and electricity are separately metered, and street permit parking with a permit.

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Public Records

Current Owner

Owner ROONEY JOSEPH T
Mailing Address 23 ST MARGARET ST, DORCHESTER, MA, 02125

Land Use

Use Code 105
Description Three-Family
Style Conventional

Tax Information

Assessed Value $954,900
Tax Rate $10.29 per $1,000
Base Tax $9,826
CPA Surcharge 1% ($88)
Estimated Annual Tax $9,914

Assessment History

Year Land Building Total Change
FY2023 $296,400 $658,500 $954,900 —

Municipal Context: BOSTON

Median Home Value $745,000
Avg SF Tax Bill $4,523
Residential Tax Rate $10.29/1000
CPA Surcharge 1%
County Suffolk

Property Data Comparison

Discrepancies found between MLS and assessor records.

Field Assessor MLS Match
Year built 1,900 1,905 ✗
Match: geocode_proximity (51.5% confidence) · Data as of Mar 8, 2026

Property Overview

Property Type
Apartment
Listing Type
For Rent
Year Built
1905
Bedrooms
4
Full Bathrooms
2
Living Area
1,300 sq ft
Total Rooms
9
Entry Level
1

Facts & Features

Home Facts

Type Residential Lease
Style Apartment
Year Built 1905
Living Area 1,300 sq ft
Lot Size 3,100 sq ft
Bedrooms 4
Full Baths 2
Total Rooms 9

Interior

Heating Forced Air
Cooling None
Flooring None
Appliances Range, Dishwasher, Washer, Dryer
Fireplace None
Basement None
Laundry In Unit
Features None

Exterior

Construction None
Architecture None
Roof None
Features Deck, Fenced Yard
Pool None
Spa None
Fencing Fenced
Patio/Porch Deck

Parking

Features None

Utilities

Electric None
Water None
Sewer None
Gas None
Other None

Financial

No financial details available

Interior Features

Flooring:
Appliances: Range, Dishwasher, Washer, Dryer
Interior Features:
Windows:
Basement:
Laundry: In Unit
Security:

Construction & Materials

Year Built: 1905
Structure Type:
Exterior Materials:
Roof:
Foundation:

Heating, Cooling & Utilities

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

Exterior & Lot

Exterior Features: Deck, Fenced Yard
Patio & Porch: Deck
Fencing: Fenced
Other Structures:
Lot Features:
Road Surface:

Parking & Garage

Parking Features:

Location

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Neighborhood

Dorchester

21 1/2 Mount Vernon St # 3, Boston MA 02125

Boston, MA 02125

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
F
Clap Elementary School
< 0.1 mi | #808 of 824 | Score: 26.3
Dropped 23 spots from last year
-31.9 below state avg
140 students Diverse
Diverse Student Body
Grades PK-06
Saint John Paul II Academy - Columbia
0.1 mi
Grades PK-08
B
Boston Collegiate Charter School
0.1 mi | #167 of 346 | Score: 53.7
Improved 31 spots from last year
-4.5 below state avg
708 students Diverse
Rising School College Ready Curriculum Diverse Student Body
Grades 05-12
C-
Everett Elementary School
0.6 mi | #728 of 824 | Score: 33.7
Dropped 53 spots from last year
-24.5 below state avg
288 students Diverse
Diverse Student Body
Grades PK-06
B
Excel Academy Charter School
0.8 mi | #155 of 346 | Score: 54.9
Improved 160 spots from last year
-3.3 below state avg
1,379 students Moderate
High Graduation Rate Rising School
Grades 05-12
D
Dever Elementary School
0.8 mi | #752 of 824 | Score: 32.4
Improved 56 spots from last year
-25.9 below state avg
445 students Diverse
Rising School
Grades K-06
C
Conservatory Lab Charter School
0.9 mi | #261 of 352 | Score: 35.6
Dropped 4 spots from last year
-22.6 below state avg
454 students Diverse
Grades PK-08
C-
Winthrop Elementary School
1.0 mi | #665 of 824 | Score: 37.6
Dropped 171 spots from last year
-20.6 below state avg
226 students Diverse
Grades PK-06
D
Mather Elementary School
1.0 mi | #754 of 824 | Score: 32.2
Dropped 257 spots from last year
-26 below state avg
473 students Very Diverse
Diverse Student Body
Grades PK-06
Compass School
1.1 mi
Grades PK-12
M

Middle Schools

10 schools
Middle School Academy
0.9 mi
A
Uncommon Schools - Roxbury Preparatory Dorchester Campus Middle School
1.1 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
F
Higginson/Lewis K-8 School
1.5 mi | #349 of 352 | Score: 23.6
Improved 3 spots from last year
-34.6 below state avg
213 students Diverse
Grades 03-08
Dearborn Middle School
1.5 mi
Mother Caroline Academy
1.7 mi
Grades 05-08
Epiphany School
2.0 mi
Grades 05-08
Nativity Prep School
2.2 mi
Grades 05-08
C
Ohrenberger School
6.3 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
McCormack Middle
0.8 mi
UP Academy
0.9 mi
H

High Schools

10 schools
C
Ruth Batson Academy
0.8 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
B
Dearborn STEM Academy
1.2 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 Academy
1.4 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
Cathedral High School
1.5 mi
9 sports • 430 athletes
Grades 07-12
A-
O'Bryant School of Math & Science
1.7 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
C
Quincy Upper School
1.8 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
Meridian Academy
2.4 mi
Grades 06-09
Newman School
2.4 mi
Grades 07-12
A+
Boston Latin School
2.5 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
B+
TechBoston Academy
2.7 mi | #11 of 25 | Score: 34.1
Improved 349 spots from last year
-24.1 below state avg
850 students Diverse
Rising School
Grades 07-12
Learn about these ratings
School data provided by BMN Schools

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Year 15
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Property History

Property Timeline

🏠
Listed for Sale
Mar 28, 2026
$4,250
Original listing
Agent: Michael Valencius Office: Compass

Price & Status History

Date Event Price Change
Mar 28, 2026 New Listing Added $4,250 —

Market Statistics

Time on Market
14 hours 41 minutes
Price per Sq Ft
$3

Tax History

Year Taxes Assessment
Tax history not available

Listing Information

Listing Agent Michael Valencius
Listing Office Compass
Agent MLS ID CN206057
Office MLS ID AN2383
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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21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 1 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 2 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 3 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 4 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 5 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 6 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 7 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 8 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 9 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 10 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 11 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 12 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 13 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 14 21 1/2 Mount Vernon St # 3, Boston MA 02125 - Photo 15
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