Investor Profile - MA
Brian Mahoney
Brian Mahoney is a real estate investor and operator based in Boston-Worcester, MA-NH. Public filings show activity across 55 properties held through 12 holding companies. Recent mortgage relationships include Eastern Bank, Bluestone Bank, and Clinton Savings Bank.
Brian's Activity
As of June 2026, public records show approximately $13.5M in recorded mortgage exposure linked to this investor across at least 17 mortgage filings and 55 properties held through 12 holding companies. Activity appears concentrated in residential and office assets recorded between 2015 and 2025.
Associated People
Primary Geography
Boston-Worcester, MA-NH
ZIP codes: 02169, 02127, 02116, 01749, and 02170
Most activity in QUINCY, BOSTON, SOUTH BOSTON, HUDSON, and MEDFORD.
Property Type Breakdown
Associated Entities (12)
MA · 4 properties · 4 mortgages
MA · 0 properties · 3 mortgages
+10 more entities not shown
Mortgages (17)
Top Lenders
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 12/30/2025 | $968k | Open | M&T Bank | QUINCY 02169 SOUTH STREET LLC | 91 S ST, QUINCY, MA 02169 |
| 10/21/2025 | $2.6M | Open | Eastern Bank | 36 BIGELOW STREET LLC | 36 BIGELOW ST, QUINCY, MA 02169 |
+15 more not shown
Owned Properties (55)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 36 BIGELOW ST, QUINCY, MA 02169 | 36 BIGELOW STREET LLC | Owns - 7 mos | $3.6M |
| 10 DELL ST, SOMERVILLE, MA 02145 | BRIAN MAHONEY | Owns - 8 mos | $830k |
+53 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in residential, office, and exempt properties across Boston-Worcester, MA-NH.
What companies is Brian Mahoney associated with?
Brian Mahoney is associated with 12 entities based on extracted signatures from public records. Key entities include QW HOLDINGS LLC, QUINCY 02169 SOUTH STREET LLC, 645 HANCOCK LLC, 363 WEST THIRD LLC, and 55 59 SOUTH STREET LLC.
How many properties are associated with this investor?
At least 55 properties are associated with Brian Mahoney and the entities they control, based on signatures extracted from recorded documents connecting Brian Mahoney to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references Eastern Bank, Bluestone Bank, and Clinton Savings Bank, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2015 through 2025, with the most recent mortgage recorded in 2025.
How is associated activity determined?
Elementix uses AI to extract signatures from recorded documents. These signatures are used to determine the relationships between people and entities. This is a novel approach that goes beyond looking at corporate filings and skip-tracing.
The information displayed on this page is compiled from recorded real estate documents, business filings, and other lawfully available sources. Elementix summarizes and analyzes public record activity related to investment real estate and associated business entities. Any contact indicators shown (such as email domain references or partial phone digits) are provided solely as unverified signals and may be incomplete or outdated.
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