PlotHow to Trace a Mortgage Through County Records
From the deed of trust to its assignments and release: how to follow one loan through the clerk's index and know who holds it now.
A mortgage leaves a trail in the county clerk's index. The deed of trust starts it, assignments move it, a modification changes it, and a release ends it. Reading that trail tells you who holds a loan today and whether it is still open, which is most of what an investor needs to know about the debt on a property.
Start at the deed of trust
Find the deed of trust for the loan you care about. On a foreclosure, the notice gives its instrument number directly. Otherwise, list every deed of trust recorded against the parcel; the grantor is the borrower and the grantee is the lender. The recorded date is when the loan was made.
Follow the assignments
An assignment of deed of trust (Dallas County often indexes it as an assignment of lien) transfers the loan to a new holder. The grantor is the party giving it up and the grantee the new holder. Assignments recorded after the deed of trust, naming the same borrower or the same lender, belong to that loan. A chain such as original lender to MERS to a securitization trust is normal; a gap in the chain is worth noting but does not stop a foreclosure.
Look for a modification
A modification agreement changes the terms of an existing loan, often to cure a default. It is recorded between the borrower and the current holder and is an early distress signal.
Find the release
A release of lien recorded by the holder and naming the borrower ends the loan: it was paid off or refinanced. When a property is refinanced, the new deed of trust and the release of the old one are usually recorded within days of each other.
A deed of trust with no later release from its holder is treated as open. That is the honest reading of the index, not proof that money is still owed.
What the index never says
Balances. The deed of trust may state the original principal on its first page, but no recorded instrument states the current payoff. Payments, arrears, escrow advances and fees are invisible in public records. The original-principal guide is about exactly this.
A worked example
On a Dallas home researched by PlotCipher, the 2005 purchase-money deed of trust to New Century Mortgage was assigned in 2010 to HSBC Bank USA as trustee for a securitization. No release was ever recorded. In 2026 a notice of sale referencing the 2005 deed of trust was filed by that trust. The chain explains why a bank the owner never borrowed from is the one foreclosing, and confirms the loan being foreclosed is the original first lien.
Doing it for any address
PlotCipher's property research reconstructs each mortgage this way for any Dallas or Collin County address, with its assignments, modifications and release status, for $1.
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