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21 Hosmer St, 
Boston, MA 02126

$1,350,000

9

Beds

3

Baths

4,056

Sq Ft

Multi-Family

Active

Listed by

Markese Daise

Stony Brook & Lennox Realty Advisors

617-531-9077

Last updated:

May 24, 2026, 01:18 AM

MLS#

73519103

Source:

MLSPIN

About This Home

21 Hosmer St

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!

Home Facts

Multi-Family

3 Baths

9 Bedrooms

Built in 1900

Price Summary

1,350,000

$332 per Sq. Ft.

MLS #:

73519103

Last Updated:

May 24, 2026, 01:18 AM

Rooms & Interior

Bedrooms

Total Bedrooms:

9

Bathrooms

Total Bathrooms:

3

Full Bathrooms:

3

Interior

Living Area:

4,056 Sq. Ft.

Structure

Structure

Building Area:

4,056 Sq. Ft.

Year Built:

1900

Lot

Lot Size (Sq. Ft):

4,225

Finances & Disclosures

Finances

Price:

$1,350,000

Price per Sq. Ft:

$332 per Sq. Ft.

Source:MLSPIN
The property listing data and information, or the Images, set forth herein were provided to MLS Property Information Network, Inc. from third party sources, including sellers, lessors and public records, and were compiled by MLS Property Information Network, Inc. The property listing data and information, and the Images, are for the personal, non-commercial use of consumers having a good faith interest in purchasing or leasing listed properties of the type displayed to them and may not be used for any purpose other than to identify prospective properties which such consumers may have a good faith interest in purchasing or leasing. MLS Property Information Network, Inc. and its subscribers disclaim any and all representations and warranties as to the accuracy of the property listing data and information, or as to the accuracy of any of the Images, set forth herein.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.