Investor profile - NY
William Zeckendorf
William Zeckendorf is a real estate investor and operator based in New York City, NY-NJ-CT. Public filings show activity across 112 properties held through 9 holding companies. Recent mortgage relationships include CSI GREENWAY 31, HSBC Bank USA, and HSBC MORTGAGE.
William's Activity
As of December 2025, public records show approximately $1.9B in recorded mortgage exposure linked to this investor across at least 52 mortgage filings and 112 properties held through 9 holding companies. Activity appears concentrated in residential and misc assets recorded between 2013 and 2025.
Primary Geography
New York City, NY-NJ-CT
ZIP codes: 10017, 10028, 10022, 10003, and 10014
Most recorded activity for this investor appears in NEW YORK.
Property Type Breakdown
Associated Entities (9)
NY · 0 properties · 17 mortgages
NY · 0 properties · 16 mortgages
NY · 4 properties · 7 mortgages
+6 more not shown
Mortgages (52)
Top Lenders
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 03/31/2025 | $3.1M | Open | JPMorgan Chase Bank, National Association | 86LEX OWNER LLC | 1289 LEXINGTON AVE, NEW YORK, NY 10028 |
| 02/19/2025 | $3.4M | Open | JPMorgan Chase Bank, National Association | 86LEX OWNER LLC | 1289 LEXINGTON AVE, NEW YORK, NY 10028 |
| 09/30/2024 | $2.0M | Open | JPMorgan Chase Bank, National Association | 86LEX OWNER LLC | 1289 LEXINGTON AVE, NEW YORK, NY 10028 |
+49 more not shown
Owned Properties (112)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 1289 LEXINGTON AVE, NEW YORK, NY 10028 | MICHAEL SCHWARTZ | Sold | $5.0M |
| 1289 LEXINGTON AVE, NEW YORK, NY 10028 | LISA BROWN | Sold | $8.5M |
| 1289 LEXINGTON AVE, NEW YORK, NY 10028 | ROCIOSALAS WHALEN | Sold | $4.5M |
+109 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in residential, misc, and office properties across New York City, NY-NJ-CT.
What companies is William Zeckendorf associated with?
William Zeckendorf is associated with 9 entities based on extracted signatures from public records. Key entities include G Z10 UNP REALTY LLC, 86LEX OWNER LLC, ACI VI CLARKSON LLC, 41 45 PROPERTY OWNER LLC, and SH CLARKSON HOUSING DEVELOPMENT FUND CORP.
How many properties are associated with this investor?
At least 112 properties are associated with William Zeckendorf and the entities they control, based on signatures extracted from recorded documents connecting William Zeckendorf to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references CSI GREENWAY 31, HSBC Bank USA, and HSBC MORTGAGE, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2013 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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