Investor profile - NY
Guillermo Santiago
Guillermo Santiago is a real estate investor and operator based in New York City, NY-NJ-CT. Public filings show activity across 312 properties held through 40 holding companies. Recent mortgage relationships include Valley Bank, Bayport Funding, and Upright.
Guillermo's Activity
As of December 2025, public records show approximately $33.7M in recorded mortgage exposure linked to this investor across at least 29 mortgage filings and 312 properties held through 40 holding companies. Activity appears concentrated in residential and commercial assets recorded between 2011 and 2025.
Primary Geography
New York City, NY-NJ-CT
ZIP codes: 11226, 11215, 11229, 11238, and 10031
Most recorded activity for this investor appears in BROOKLYN and NEW YORK.
Property Type Breakdown
Associated Entities (40)
NY · 0 properties · 8 mortgages
NY · 0 properties · 5 mortgages
NY · 0 properties · 4 mortgages
+37 more not shown
Mortgages (29)
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 12/15/2020 | $792k | Open | ROSENTHAL AND ROSENTHAL | 206 POWERS MANAGEMENT LLC | 206 POWERS ST, BROOKLYN, NY 11211 3A |
| 12/15/2020 | $700k | Open | ROSENTHAL AND ROSENTHAL | 206 POWERS MANAGEMENT LLC | 206 POWERS ST, BROOKLYN, NY 11211 3A |
| 02/14/2020 | $620k | Open | Bayport Funding | 32 LAIGHT LLC | 32 LAIGHT ST, NEW YORK, NY 10013 |
+26 more not shown
Owned Properties (312)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 524 HALSEY ST, BROOKLYN, NY 11233 207 | LISA WANG | Sold | $1.3M |
| 524 HALSEY ST, BROOKLYN, NY 11233 207 | KATHLEEN MCGRATH | Sold | $1.4M |
| 524 HALSEY ST, BROOKLYN, NY 11233 207 | JEREMY COHEN | Sold | $0 |
+309 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in residential and commercial properties across New York City, NY-NJ-CT.
What companies is Guillermo Santiago associated with?
Guillermo Santiago is associated with 40 entities based on extracted signatures from public records. Key entities include 762 PARK LLC, 246 WEST 16TH STREET LLC, 206 POWERS MANAGEMENT LLC, NORTHROCK 2 LLC, and 32 LAIGHT LLC.
How many properties are associated with this investor?
At least 312 properties are associated with Guillermo Santiago and the entities they control, based on signatures extracted from recorded documents connecting Guillermo Santiago to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references Valley Bank, Bayport Funding, and Upright, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2011 through 2025, with the most recent mortgage recorded in 2020.
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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