Investor profile - TX
William Koltun
William Koltun is a real estate investor and operator based in Austin, TX. Public filings show activity across 4 properties held through 1 holding companies. Recent mortgage relationships include ROUND TOP STATE BANK, Citizens National Bank, and EXPRESS CREATIVE SOLUTIONS.
William's Activity
As of December 2025, public records show approximately $7.5M in recorded mortgage exposure linked to this investor across at least 12 mortgage filings and 4 properties held through 1 holding companies. Activity appears concentrated in commercial and multifamily assets recorded between 2012 and 2024.
Associated People
Primary Geography
Austin, TX
ZIP codes: 78613, 78664, 78681, and 78704
Most recorded activity for this investor appears in ROUND ROCK, CEDAR PARK, and AUSTIN.
Property Type Breakdown
Associated Entities (1)
TX · 5 properties · 12 mortgages
Mortgages (12)
Top Lenders
$4.7M · 7 loans
$2.3M · 2 loans
$376k · 2 loans
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 12/20/2021 | $275k | Open | ROUND TOP STATE BANK | QUADRA PROPERTIES LLC | - |
| 12/20/2021 | $675k | Open | ROUND TOP STATE BANK | QUADRA PROPERTIES LLC | 1001 SAM BASS RD, ROUND ROCK, TX 78681 |
| 12/30/2020 | $575k | Open | ROUND TOP STATE BANK | QUADRA PROPERTIES LLC | 2013 N MAYS ST, ROUND ROCK, TX 78664 |
+9 more not shown
Owned Properties (4)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 2013 N MAYS ST, ROUND ROCK, TX 78664 | QUADRA PROPERTIES LLC | Owns - 7.7 yrs | $0 |
| 1114 ALGARITA AVE, AUSTIN, TX 78704 | QUADRA PROPERTIES LLC | Owns - 13.2 yrs | $328k |
| 306 S BELL BLVD, CEDAR PARK, TX 78613 | QUADRA PROPERTIES LLC | Owns - 13.4 yrs | $1.5M |
+1 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in commercial and multifamily properties across Austin, TX.
What companies is William Koltun associated with?
William Koltun is associated with 1 entity based on extracted signatures from public records. Key entities include QUADRA PROPERTIES LLC.
How many properties are associated with this investor?
At least 4 properties are associated with William Koltun and the entities they control, based on signatures extracted from recorded documents connecting William Koltun to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references ROUND TOP STATE BANK, Citizens National Bank, and EXPRESS CREATIVE SOLUTIONS, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2012 through 2024, 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.
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