Investor Profile - CO
Matthew Grabau
Matthew Grabau is a real estate investor and operator based in Denver-Boulder, CO. Public filings show activity across 13 properties held through 4 holding companies. Recent mortgage relationships include AMG National Trust, Blue Federal Credit Union, and FirstBank.
Matthew's Activity
As of May 2026, public records show approximately $7.1M in recorded mortgage exposure linked to this investor across at least 11 mortgage filings and 13 properties held through 4 holding companies. Activity appears concentrated in residential assets recorded between 2016 and 2026.
Primary Geography
Denver-Boulder, CO
ZIP codes: 80030, 80206, 80503, 80203, and 80211
Most activity in WESTMINSTER, DENVER, LONGMONT, and ERIE.
Property Type Breakdown
Associated Entities (4)
CO · 3 properties · 7 mortgages
CO · 1 property · 2 mortgages
+2 more entities not shown
Mortgages (11)
Top Lenders
| Date | Amount | Status | Lender | Borrower | Address |
|---|---|---|---|---|---|
| 02/19/2026 | $2.0M | Open | AMG National Trust | G5 CAPITAL 1437 CLAYTON STREET LLC | 1275 N WASHINGTON ST, DENVER, CO 80203 |
| 01/06/2026 | $322k | Open | Blue Federal Credit Union | JENIA GRABAU | 1720 CAMBRIDGE DR, LONGMONT, CO 80503 |
+9 more not shown
Owned Properties (13)
| Address | Deeded owner | Status | Consideration |
|---|---|---|---|
| 1275 N WASHINGTON ST, DENVER, CO 80203 | G5 CAPITAL 1437 CLAYTON STREET LLC | Owns - 3 mos | $2.9M |
| 1720 CAMBRIDGE DR, LONGMONT, CO 80503 | G5 CAPITAL 1437 CLAYTON STREET LLC | Owns - 5 mos | $461k |
+11 more not shown
FAQ
What type of real estate does this investor focus on?
Associated mortgages and deeds show activity in residential properties across Denver-Boulder, CO.
What companies is Matthew Grabau associated with?
Matthew Grabau is associated with 4 entities based on extracted signatures from public records. Key entities include GRABAU PROPERTIES LLC, G5 CAPITAL LLC, GRABAU INVESTMENTS LLC, and G5 CAPITAL 1437 CLAYTON STREET LLC.
How many properties are associated with this investor?
At least 13 properties are associated with Matthew Grabau and the entities they control, based on signatures extracted from recorded documents connecting Matthew Grabau to the entities.
Which lenders has this investor worked with?
Recent mortgage activity references AMG National Trust, Blue Federal Credit Union, and FirstBank, indicating a mix of lending relationships.
How recent is their activity?
Records show activity from 2016 through 2026, with the most recent mortgage recorded in 2026.
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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