Investor Profile - MA
Brendan Sullivan
Brendan Sullivan is a real estate investor and operator based in Boston-Worcester, MA-NH. Public filings show activity across 151 properties held through 18 holding companies. Recent mortgage relationships include NewPoint Real Estate Capital, Reading Cooperative Bank, and QS Private Lending.
Brendan's Activity
As of June 2026, public records show approximately $367.3M in recorded mortgage exposure linked to this investor across at least 37 mortgage filings and 151 properties held through 18 holding companies. Activity appears concentrated in residential and industrial assets recorded between 2016 and 2026.
Associated People
Primary Geography
Boston-Worcester, MA-NH
ZIP codes: 02138, 02139, 02155, 02140, and 02141
Most activity in CAMBRIDGE, MEDFORD, BOSTON, ARLINGTON, and MELROSE.
Property Type Breakdown
Associated Entities (18)
MA · 13 properties · 22 mortgages
MA · 0 properties · 4 mortgages
+16 more entities not shown
Mortgages (37)
Top Lenders
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 05/21/2025 | $350.0M | Open | NewPoint Real Estate Capital | SEAPORT BC RESIDENTIAL LLC | 5 FAN PIER BLVD, BOSTON, MA 02210 |
| 06/28/2024 | $3.5M | Closed | Needham Bank | TREETOP INVESTMENTS LLC | 14 SYLVAN ST, MELROSE, MA 02176 |
+35 more not shown
Owned Properties (151)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 133 5TH ST #5, CAMBRIDGE, MA 02141 | TREETOP INVESTMENTS LLC | Owns - 12 mos | $0 |
| 133 5TH ST, CAMBRIDGE, MA 02141 | - | Sold | $0 |
+149 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in residential, industrial, and commercial properties across Boston-Worcester, MA-NH.
What companies is Brendan Sullivan associated with?
Brendan Sullivan is associated with 18 entities based on extracted signatures from public records. Key entities include TREETOP INVESTMENTS LLC, 2 TREE LLC, MY BROTHERS KEEPER INC, SEAPORT BC TITLE HOLDER LLC, and 14 REGENT STREET LLC.
How many properties are associated with this investor?
At least 151 properties are associated with Brendan Sullivan and the entities they control, based on signatures extracted from recorded documents connecting Brendan Sullivan to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references NewPoint Real Estate Capital, Reading Cooperative Bank, and QS Private Lending, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2016 through 2026, 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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