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100 Old Harbor St # 3, Boston MA 02127 - Preview 1 100 Old Harbor St # 3, Boston MA 02127 - Preview 2 100 Old Harbor St # 3, Boston MA 02127 - Preview 3 100 Old Harbor St # 3, Boston MA 02127 - Preview 4 100 Old Harbor St # 3, Boston MA 02127 - Preview 5 100 Old Harbor St # 3, Boston MA 02127 - Preview 6 100 Old Harbor St # 3, Boston MA 02127 - Preview 7 100 Old Harbor St # 3, Boston MA 02127 - Preview 8 100 Old Harbor St # 3, Boston MA 02127 - Preview 9 100 Old Harbor St # 3, Boston MA 02127 - Preview 10 100 Old Harbor St # 3, Boston MA 02127 - Preview 11 100 Old Harbor St # 3, Boston MA 02127 - Preview 12 100 Old Harbor St # 3, Boston MA 02127 - Preview 13 100 Old Harbor St # 3, Boston MA 02127 - Preview 14
100 Old Harbor St # 3, Boston MA 02127 - Preview 1 100 Old Harbor St # 3, Boston MA 02127 - Preview 2 100 Old Harbor St # 3, Boston MA 02127 - Preview 3 100 Old Harbor St # 3, Boston MA 02127 - Preview 4 100 Old Harbor St # 3, Boston MA 02127 - Preview 5 100 Old Harbor St # 3, Boston MA 02127 - Preview 6 100 Old Harbor St # 3, Boston MA 02127 - Preview 7 100 Old Harbor St # 3, Boston MA 02127 - Preview 8 100 Old Harbor St # 3, Boston MA 02127 - Preview 9 100 Old Harbor St # 3, Boston MA 02127 - Preview 10 100 Old Harbor St # 3, Boston MA 02127 - Preview 11 100 Old Harbor St # 3, Boston MA 02127 - Preview 12 100 Old Harbor St # 3, Boston MA 02127 - Preview 13 100 Old Harbor St # 3, Boston MA 02127 - Preview 14

100 Old Harbor St # 3, Boston MA 02127

Boston, MA 02127
$550,000
Est. $3,561/month
1
Beds
1
Baths
569
Sq Ft
$967
Price/Sq Ft
0.01
Acres
1873
Year Built
Condominium
Type
12 hours 17 minutes
Time on Market
Active Open House Listed May 26, 2026 • MLS# 73524001 Copied!

About this home

OPEN HOUSE SATURDAY MAY 30th 9-10am. CHECK OUT THE VIEW from your private roof deck! This adorable 1BR penthouse unit with granite counters and stainless steel appliances is located in the heart of Southie. Soaring cathedral ceilings and a custom walk in closet with washer and dryer in unit. Close to many shops and restaurants as well as the beach and ocean! Close to 11 bus with access to financial district and seaport. Showings begin immediately!

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Property Overview

Property Type
Condominium
Listing Type
For Sale
Year Built
1873
Bedrooms
1
Full Bathrooms
1
Living Area
569 sq ft
Total Rooms
4
Stories
1
Entry Level
3
Main Level Bedrooms
1

Open House Schedule

30
May
Saturday, May 30
9:00 AM - 10:00 AM EDT

Facts & Features

Home Facts

Type Residential
Style Condominium
Year Built 1873
Living Area 569 sq ft
Lot Size 0.01 acres
Bedrooms 1
Full Baths 1
Total Rooms 4

Interior

Heating Forced Air, Natural Gas
Cooling Window Unit(s)
Flooring Hardwood
Appliances Range, Oven, Dishwasher, Disposal, Refrigerator, Washer
Fireplace None
Basement N
Laundry Flooring - Hardwood, Main Level, Third Floor, In Unit
Features None

Exterior

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

Parking

Features On Street

Utilities

Electric 100 Amp Service
Water Public
Sewer Public Sewer
Gas None
Other For Gas Range

Financial

Annual Tax $5,541
Assessed Value $478,500

Interior Features

Flooring: Hardwood
Appliances: Range, Oven, Dishwasher, Disposal, Refrigerator, Washer
Interior Features:
Windows:
Basement: N
Laundry: Flooring - Hardwood, Main Level, Third Floor, In Unit
Security:

Construction & Materials

Year Built: 1873
Structure Type: 2/3 Family
Exterior Materials:
Roof:
Foundation:
Stories: 1

Heating, Cooling & Utilities

Heating: Forced Air, Natural Gas
Heating Zones: 1
Cooling: Window Unit(s)
Cooling Zones: 1
Hot Water:
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

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

Parking & Garage

Parking Features: On Street

Location

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Neighborhood

100 Old Harbor St # 3, Boston MA 02127

Boston, MA 02127

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

3 schools
Perkins Elementary
0.2 mi
St. Peter Academy School
0.4 mi
Grades PK-08
F
Tynan Elementary School
0.5 mi | #816 of 824 | Score: 24.8
Dropped 23 spots from last year
-33.5 below state avg
227 students Very Diverse
Diverse Student Body
Grades PK-06
M

Middle Schools

3 schools
Middle School Academy
0.2 mi
UP Academy
0.2 mi
McCormack Middle
1.0 mi
H

High Schools

3 schools
Excel High
0.2 mi
F
Excel High School
0.2 mi | #332 of 346 | Score: 26.2
Improved 28 spots from last year
-32.1 below state avg
301 students Very Diverse
11 sports • 241 athletes
Rising School Diverse Student Body
Grades 10-12
F
Boston Collaborative High School
0.2 mi | #389 of 346 | Score: 22.8
Dropped 2 spots from last year
210 students Diverse
Grades 09-12
Learn about these ratings
School data provided by BMN Schools

Monthly Payment Calculator

Monthly Payment
$0
Principal, interest, taxes & insurance
Loan Amount
$0
After down payment
Total Interest
$0
Over life of loan
Total Cost
$0
Including down payment
%
Down: $0
%

Monthly Payment Breakdown

Principal & Interest $0
Property Tax $462
Homeowners Insurance $200
HOA Fee $118/mo
PMI (if <20% down) $0

Loan Summary

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

Rate Impact

-0.5% Rate
$0/mo
Save $0/mo
Current Rate
$0/mo
+0.5% Rate
$0/mo
Cost $0/mo

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

Property Timeline

🏠
Listed for Sale
May 26, 2026
$550,000
Original listing
Agent: Kimberly O'Neil Mara Office: Century 21 North East

Price & Status History

Date Event Price Change
May 26, 2026 New Listing Added $550,000 —

Market Statistics

Time on Market
12 hours 17 minutes
Price per Sq Ft
$967

Tax History

Year Taxes Assessment
2025 $5,541 $478,500

Financial Details

Annual Property Tax
$5,541
Tax Year 2025
HOA Fee
$118
Monthly
Assessed Value
$478,500

Listing Information

Listing Agent Kimberly O'Neil Mara
Listing Office Century 21 North East
Agent MLS ID B8000844
Office MLS ID AN8462
Listing Data Updated May 26, 2026 1:19 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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Market Analytics for Boston, MA

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