Investor profile - MA
J Obrien
J Obrien is a real estate investor and operator based in Boston-Worcester, MA-NH. Public filings show activity across 9 properties held through 10 holding companies. Recent mortgage relationships include Citizens Bank, NEW YORK LIFE INS, and BRIMSTONE FAMILY DEVELOPMENT.
J's Activity
As of December 2025, public records show approximately $374.3M in recorded mortgage exposure linked to this investor across at least 14 mortgage filings and 9 properties held through 10 holding companies. Activity appears concentrated in industrial and office assets recorded between 2015 and 2023.
Primary Geography
Boston-Worcester, MA-NH
ZIP codes: 02038, 02116, 01887, 02322, and 02421
Most recorded activity for this investor appears in FRANKLIN, BOSTON, WILMINGTON, AVON, and LEXINGTON.
Property Type Breakdown
Associated Entities (10)
MA · 0 properties · 6 mortgages
MA · 0 properties · 2 mortgages
MA · 4 properties · 2 mortgages
+7 more not shown
Mortgages (14)
Top Lenders
$130.9M · 3 loans
$111.2M · 3 loans
$48.8M · 2 loans
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 08/23/2023 | $24.4M | Open | BRIMSTONE FAMILY DEVELOPMENT | BOSTON INFILL LL LLC | 25 KENWOOD CIR, FRANKLIN, MA 02038 |
| 08/23/2023 | $24.4M | Open | BRIMSTONE FAMILY DEVELOPMENT | BOSTON INFILL LL LLC | 25 KENWOOD CIR, FRANKLIN, MA 02038 |
| 01/15/2020 | $84.7M | Closed | MetLife Investment Management | BOYLSTON LL LLC | 535 BOYLSTON ST, BOSTON, MA 02116 8 |
+11 more not shown
Owned Properties (9)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 40 KENWOOD CIR, FRANKLIN, MA 02038 | BOSTON INFILL LL LLC | Owns - 2.3 yrs | $37.5M |
| 25 KENWOOD CIR, FRANKLIN, MA 02038 | BOSTON INFILL LL LLC | Owns - 2.3 yrs | $37.5M |
| 543 BOYLSTON ST, BOSTON, MA 02116 | BOYLSTON LL LLC | Sold | $128.0M |
+6 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in industrial and office properties across Boston-Worcester, MA-NH.
What companies is J Obrien associated with?
J Obrien is associated with 10 entities based on extracted signatures from public records. Key entities include BMIP LL LLC, MAIND LL LLC, BOSTON INFILL LL LLC, BSS LL LLC, and 181 BOP LL LLC.
How many properties are associated with this investor?
At least 9 properties are associated with J Obrien and the entities they control, based on signatures extracted from recorded documents connecting J Obrien to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references Citizens Bank, NEW YORK LIFE INS, and BRIMSTONE FAMILY DEVELOPMENT, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2015 through 2023, with the most recent mortgage recorded in 2023.
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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