Investor profile - NY
Mateusz Rostek
Mateusz Rostek is a real estate investor and operator based in New York City, NY-NJ-CT. Public filings show activity across 2 properties held through 2 holding companies. Recent mortgage relationships include Roc Capital / Roc360 and Emerald Creek Capital.
Mateusz's Activity
As of December 2025, public records show approximately $5.0M in recorded mortgage exposure linked to this investor across at least 4 mortgage filings and 2 properties held through 2 holding companies. Activity appears concentrated in residential and multifamily assets recorded between 2020 and 2023.
Primary Geography
New York City, NY-NJ-CT
ZIP codes: 11215 and 11238
Most recorded activity for this investor appears in BROOKLYN.
Property Type Breakdown
Associated Entities (2)
NY · 0 properties · 2 mortgages
NY · 0 properties · 2 mortgages
Mortgages (4)
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 09/03/2021 | $1.3M | Open | Roc Capital / Roc360 | EAGLE STREET DEVELOPMENT 2 LLC | 189 PROSPECT PL, BROOKLYN, NY 11238 |
| 08/30/2021 | $2.4M | Open | Roc Capital / Roc360 | EAGLE STREET DEVELOPMENT 2 LLC | 189 PROSPECT PL, BROOKLYN, NY 11238 |
| 11/20/2020 | $1.2M | Open | Emerald Creek Capital | 543 11TH STREET LLC | 543 11TH ST, BROOKLYN, NY 11215 |
+1 more not shown
Owned Properties (2)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 189 PROSPECT PL, BROOKLYN, NY 11238 | EAGLE STREET DEVELOPMENT 2 LLC | Sold | $3.2M |
| 543 11TH ST, BROOKLYN, NY 11215 | 543 11TH STREET LLC | Sold | $2.3M |
+0 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in residential and multifamily properties across New York City, NY-NJ-CT.
What companies is Mateusz Rostek associated with?
Mateusz Rostek is associated with 2 entities based on extracted signatures from public records. Key entities include EAGLE STREET DEVELOPMENT 2 LLC and 543 11TH STREET LLC.
How many properties are associated with this investor?
At least 2 properties are associated with Mateusz Rostek and the entities they control, based on signatures extracted from recorded documents connecting Mateusz Rostek to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references Roc Capital / Roc360 and Emerald Creek Capital, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2020 through 2023, with the most recent mortgage recorded in 2021.
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.
Elementix is not a consumer reporting agency, and this information does not constitute a consumer report. The data may not be used to make decisions about an individual's eligibility for personal credit, consumer housing, employment, insurance, or any other purpose governed by the Fair Credit Reporting Act.
Elementix may suppress certain contact indicators where legally required or where appropriate for safety or privacy reasons. Requests for removal, suppression, or correction of information must be submitted to compliance@elementix.ai. Elementix reviews such requests only where required by applicable law or where information is factually inaccurate. General objections or unsupported demands do not create a removal obligation.