Investor Profile - MA
Seth Alexander
Seth Alexander is a real estate investor and operator based in Boston-Worcester, MA-NH. Public filings show activity across 65 properties held through 37 holding companies. Recent mortgage relationships include MetLife, JPMorgan Chase Bank, and Teachers FCU.
Seth's Activity
As of June 2026, public records show approximately $2.6B in recorded mortgage exposure linked to this investor across at least 16 mortgage filings and 65 properties held through 37 holding companies. Activity appears concentrated in residential and industrial assets recorded between 2015 and 2026.
Associated People
Primary Geography
Boston-Worcester, MA-NH
ZIP codes: 02139, 02142, 02748, 02150, and 01845
Most activity in CAMBRIDGE, SOUTH DARTMOUTH, CHELSEA, NORTH ANDOVER, and QUINCY.
Property Type Breakdown
Associated Entities (37)
MA · 2 properties · 3 mortgages
MA · 1 property · 1 mortgage
+35 more entities not shown
Mortgages (16)
Top Lenders
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 06/06/2025 | $1 | Open | JPMorgan Chase Bank | BRE BMR 35 LANDSDOWNE LLC | 35 LANDSDOWNE ST, CAMBRIDGE, MA 02139 |
| 03/24/2025 | $1 | Open | NATIXIS NY BRANK | KC 75 BROADWAY JV LEASEHOLD LLC | 75 BROADWAY, MALDEN, MA 02148 |
+14 more not shown
Owned Properties (65)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 35 LANDSDOWNE ST, CAMBRIDGE, MA 02139 | CITI REAL ESTATE FUNDING INC | Owns - 12 mos | $0 |
| 20 POTTER ST, SOUTH DARTMOUTH, MA 02748 | MIT VOLPE OPERATING CO LLC | Owns - 14 mos | $0 |
+63 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 Seth Alexander associated with?
Seth Alexander is associated with 37 entities based on extracted signatures from public records. Key entities include FIREHOUSE INN LLC, MIT 238 MAIN STREET LEASEHOLD LLC, KC 75 BROADWAY JV LEASEHOLD LLC, MIT 139 MAIN STREET LEASEHOLD LLC, and MIT 314 MAIN STREET LEASEHOLD LLC.
How many properties are associated with this investor?
At least 65 properties are associated with Seth Alexander and the entities they control, based on signatures extracted from recorded documents connecting Seth Alexander to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references MetLife, JPMorgan Chase Bank, and Teachers FCU, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2015 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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