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12 School St # 1, Boston MA 02129

Boston, MA 02129 • Charlestown
$1,100,000
Est. $6,465/month
3
Beds
2
Baths
1,247
Sq Ft
$882
Price/Sq Ft
1890
Year Built
Condominium
Type
15
Days on Market
Pending Listed May 13, 2026 • MLS# 73517843 Copied!

About this home

Located just minutes from Charlestown’s best restaurants, shops & the orange line, this recently renovated duplex blends historic charm with modern updates. Featuring 9.5 ft ceilings and a sought-after open layout, the main living area offers direct access to a serene private patio, perfect for entertaining. The newly renovated kitchen boasts a quartz waterfall island, stainless steel appliances, herringbone marble backsplash, hardwood floors & spacious dining area. Sun-filled living room features a custom gas fireplace with historic marble mantle. A generously sized guest bedroom and beautifully updated full bath complete the main level. Downstairs, the expansive primary suite offers a walk-in closet and ensuite bath, while the third bedroom is ideal for a home office, den, nursery or gym. Complete with central AC, in-unit laundry, ample storage & an unbeatable location, this is Charlestown living at its finest.

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Public Records

Current Owner

Owner PACHECO CARLOS M
Mailing Address 12 SCHOOL ST, DORCHESTER, MA, 02124

Land Use

Use Code 105
Description Three-Family
Style Conventional

Tax Information

Assessed Value $754,900

Assessment History

Year Land Building Total Change
FY2023 $190,000 $564,900 $754,900 —

Sale History

Date Price Book/Page
Nov 30, 1995 $80,000 20193/092

Building Permit History

No building permits on record since 2009.

Data: City of Boston Open Data (Analyze Boston)

Municipal Context: BOSTON

Property Data Comparison

Discrepancies found between MLS and assessor records.

Field Assessor MLS Match
Year built 1,885 1,890 ✗
Match: address_exact (90.0% confidence) · Data as of Jun 1, 2026

Property Overview

Property Type
Condominium
Listing Type
For Sale
Year Built
1890
Bedrooms
3
Full Bathrooms
2
Living Area
1,247 sq ft
Total Rooms
6
Stories
2
Entry Level
1

Facts & Features

Central AC

Home Facts

Type Residential
Style Condominium
Year Built 1890
Living Area 1,247 sq ft
Bedrooms 3
Full Baths 2
Total Rooms 6

Interior

Heating Forced Air
Cooling Central Air
Flooring None
Appliances Range, Dishwasher, Refrigerator, Washer, Dryer
Fireplace None
Fireplaces 1
Basement Y
Laundry In Unit
Features None

Exterior

Construction Frame
Architecture None
Roof None
Features Patio, Patio - Enclosed
Pool None
Spa None
Fencing None
Patio/Porch Patio, Patio - Enclosed

Parking

Features On Street

Utilities

Electric None
Water Public
Sewer Public Sewer
Gas None
Other None

Financial

Annual Tax $6,439
Assessed Value $866,200

Interior Features

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

Construction & Materials

Year Built: 1890
Structure Type: Duplex
Exterior Materials: Frame
Roof:
Foundation:
Stories: 2

Heating, Cooling & Utilities

Heating: Forced Air
Heating Zones: 1
Cooling: Central Air
Cooling Zones: 1
Hot Water:
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

Exterior Features: Patio, Patio - Enclosed
Patio & Porch: Patio, Patio - Enclosed
Fencing:
Other Structures:
Lot Features:
Road Surface:

Parking & Garage

Parking Features: On Street

Special Features

Fireplaces: 1
Fireplace Type:
Community Amenities: Public Transportation, Shopping, Pool, Tennis Court(s), Medical Facility, Laundromat, Highway Access, House of Worship, Marina, Private School, Public School, T-Station, University, Other

Location

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Neighborhood

Charlestown

12 School St # 1, Boston MA 02129

Boston, MA 02129

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
A-
Warren-Prescott K-8 School
< 0.1 mi | #85 of 352 | Score: 51.3
Improved 4 spots from last year
-7 below state avg
507 students Diverse
Grades PK-08
D
Horace Mann School for the Deaf Hard of Hearing
0.2 mi | #374 of 346 | Score: 33.9
Same rank as last year
73 students Diverse
Diverse Student Body
Grades PK-12
C
Harvard-Kent Elementary School
0.4 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
A
Eliot K-8 Innovation School
1.0 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
St. John Elementary School
1.1 mi
Grades PK-08
C+
Mario Umana Academy
1.2 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
Advent School
1.3 mi
Grades K-06
East Boston Central Catholic School
1.4 mi
Grades PK-08
D
O'Donnell Elementary School
1.4 mi | #777 of 824 | Score: 30.7
Dropped 52 spots from last year
-27.5 below state avg
256 students Less Diverse
Grades PK-06
Park Street School
1.5 mi
Grades K-07
M

Middle Schools

10 schools
Middle School Academy
3.1 mi
F
Higginson/Lewis K-8 School
4.0 mi | #349 of 352 | Score: 23.6
Improved 3 spots from last year
-34.6 below state avg
213 students Diverse
Grades 03-08
Nativity Prep School
4.3 mi
Grades 05-08
A
Uncommon Schools - Roxbury Preparatory Dorchester Campus Middle School
4.6 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
Dearborn Middle School
4.9 mi
Mother Caroline Academy
4.9 mi
Grades 05-08
Epiphany School
5.8 mi
Grades 05-08
C
Ohrenberger School
9.1 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
0.2 mi
UP Academy
3.1 mi
H

High Schools

10 schools
D
Charlestown High School
0.3 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-
East Boston High School
1.6 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
1.9 mi
Grades 07-12
C
Quincy Upper School
2.0 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
Cathedral High School
2.5 mi
9 sports • 430 athletes
Grades 07-12
A+
Boston Latin School
3.3 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
A-
O'Bryant School of Math & Science
3.4 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
3.6 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
C
Ruth Batson Academy
4.3 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
4.3 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

Monthly Payment
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Loan Amount
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Total Interest
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Over life of loan
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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 $537
Homeowners Insurance $200
HOA Fee $167/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

Property Timeline

📋
Status: Active under contract
May 20, 2026
Active → Active Under Contract
⏳
Pending Sale
May 20, 2026
Offer accepted, sale pending
🏠
Listed for Sale
May 13, 2026
$1,100,000
Original listing
Agent: Sarah Fillmann Office: Coldwell Banker Realty - Boston

Price & Status History

Date Event Price Change
May 20, 2026 Status: Active under contract $0 —
May 13, 2026 New Listing Added $1,100,000 —

Market Statistics

Days on Market
15 days
Price per Sq Ft
$882

Tax History

Year Taxes Assessment
2026 $6,439 $866,200

Financial Details

Annual Property Tax
$6,439
Tax Year 2026
HOA Fee
$167
Monthly
Assessed Value
$866,200

Listing Information

Listing Agent Sarah Fillmann
Listing Office Coldwell Banker Realty - Boston
Agent MLS ID CN211601
Office MLS ID AN6194
Listing Data Updated May 29, 2026 4:41 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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