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21 Hosmer St, Boston MA 02126

Boston, MA 02126 • Mattapan
$1,350,000
Est. $8,022/month
9
Beds
3
Baths
4,056
Sq Ft
$333
Price/Sq Ft
0.10
Acres
1900
Year Built
12 hours 34 minutes
Time on Market
Active Open House Listed May 14, 2026 • MLS# 73519103 Copied!

About this home

A rare, fully turn-key Mattapan multi-family delivering scale, flexibility, and immediate income in a high-demand Boston market. This oversized 3-family features three expansive 3 bed/1 bath units, each with layouts that can easily function as 4-bedroom apartments maximizing rental potential. Designed for today’s buyer, the property offers central air, updated electrical, hardwood floors, modern kitchens & baths, new siding, newer rubber roof, & decks throughout. The building is well-maintained with a strong in-place rent roll, creating a true plug-and-play investment or an ideal opportunity for an owner-occupant to offset their mortgage with substantial income. ***NOTE***Additional upside: the identical neighboring property at 19 Hosmer St is also available...purchase one or secure both for a scalable $240K+ gross annual rent play. Positioned near public transit, retail, and many amenities, this is a high-performing Boston multi-family with long-term appreciation and income growth!

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Property Overview

Property Type
3 Family
Listing Type
For Sale
Year Built
1900
Bedrooms
9
Full Bathrooms
3
Living Area
4,056 sq ft
Total Rooms
18
Stories
3
Levels
3

Open House Schedule

17
May
Sunday, May 17
1:00 PM - 2:00 PM EDT
16
May
Saturday, May 16
1:00 PM - 2:00 PM EDT

Facts & Features

Home Facts

Type Residential Income
Style 3 Family
Year Built 1900
Living Area 4,056 sq ft
Lot Size 0.10 acres
Bedrooms 9
Full Baths 3
Total Rooms 18

Interior

Heating None
Cooling None
Flooring Hardwood
Appliances None
Fireplace None
Basement Full
Laundry None
Features None

Exterior

Construction See Remarks
Architecture None
Roof Shingle
Features None
Pool None
Spa None
Fencing None
Patio/Porch Porch

Parking

Features Off Street
Total Spaces 6

Utilities

Electric 200+ Amp Service
Water Public
Sewer Public Sewer
Gas None
Other For Gas Range

Financial

Annual Tax $11,949
Assessed Value $1,031,900

Interior Features

Flooring: Hardwood
Appliances:
Interior Features:
Windows:
Basement: Full
Laundry:
Security:

Construction & Materials

Year Built: 1900
Structure Type:
Exterior Materials: See Remarks
Roof: Shingle
Foundation: Other
Stories: 3

Heating, Cooling & Utilities

Heating:
Cooling:
Hot Water: Natural Gas
Water Source: Public
Sewer: Public Sewer
Energy Features:

Exterior & Lot

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

Parking & Garage

Total Parking Spaces: 6
Parking Features: Off Street

Location

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Neighborhood

Mattapan

21 Hosmer St, Boston MA 02126

Boston, MA 02126

Walkability

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Nearby Schools

School information not available for this location.

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 $996
Homeowners Insurance $200
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 14, 2026
$1,350,000
Original listing
Agent: Markese Daise Office: Stony Brook & Lennox Realty Advisors

Price & Status History

Date Event Price Change
May 14, 2026 New Listing Added $1,350,000

Market Statistics

Time on Market
12 hours 34 minutes
Price per Sq Ft
$333

Tax History

Year Taxes Assessment
2025 $11,949 $1,031,900

Financial Details

Annual Property Tax
$11,949
Tax Year 2025
Assessed Value
$1,031,900

Listing Information

Listing Agent Markese Daise
Listing Office Stony Brook & Lennox Realty Advisors
Agent MLS ID CN211128
Office MLS ID AN7064
Listing Data Updated May 14, 2026 12:50 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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