17.1 Anatomy of Mortgage Lending

Most real estate purchases involve borrowed money. In this topic, you’ll learn the basic mechanics of mortgage financing, the key financial components of a loan, and the purpose of the promissory note and the mortgage (or deed of trust).

Mechanics of a Loan Transaction (Big Picture)

When a borrower signs a promissory note (promise to repay) and gives the lender a mortgage (or deed of trust) as security, the financing method is called mortgage financing.

The process of securing a loan by pledging property without giving up ownership is called hypothecation.

Two required instruments:

Note = evidence of the debt
Mortgage / deed of trust = evidence of the collateral pledge

Lien-Theory vs. Title-Theory (Ownership View)

Lien-theory states: the mortgage creates a lien against the property; the borrower retains title.
Title-theory states: the mortgage (or trust deed structure) is treated more like a conveyance of title to secure the loan.
Intermediate theory: combines aspects of both approaches.

Why it matters: The theory affects how states treat lender/borrower rights, especially during default and foreclosure.

Mortgage Transaction Flow

Exhibit 17.1 Flow of a Mortgage Transaction — **Exhibit 17.1:** Flow of a Mortgage Transaction

Initiation: borrower delivers the note and mortgage; lender delivers the loan funds.
Fulfillment: borrower makes payments over time.
Cancellation: once paid off, the note and mortgage are cancelled/released.

Deed of Trust Transaction Flow

A deed of trust involves a third party trustee. The borrower (trustor) conveys title to the trustee as security for the loan. The lender is the beneficiary.

Exhibit 17.2 Flow of a Trust Deed Transaction — **Exhibit 17.2:** Flow of a Trust Deed Transaction

Initiation: trustor signs note + deed of trust; lender funds the loan.
During the loan: trustee holds title on behalf of the beneficiary (lender).
When paid off: trustee issues a deed of reconveyance back to the borrower.

Financial Components of a Loan

Principal: the amount borrowed (original principal); remaining unpaid principal is the loan balance.
Interest: the charge for using the lender’s money; can be fixed or adjustable.
APR: required disclosure that reflects the interest rate plus certain finance charges.
Points: prepaid interest (1 point = 1% of the loan amount) used to increase lender yield.
Term: the length of time until the loan must be paid off (balloons can shorten payoff date).
Payments: usually monthly; in amortizing loans, each payment includes interest + principal.

Usury: Many states limit excessive interest rates by law.

Promissory Note vs. Mortgage/Trust Deed

Promissory Note

Evidence of the debt
Borrower’s promise to repay
States loan amount, term, repayment method, interest rate
Negotiable instrument (can be assigned to another party)

Mortgage / Deed of Trust

Evidence of the collateral pledge
Identifies the property (legal description + address)
Includes performance clauses (escrow, insurance, maintenance, due-on-sale, etc.)
Creates the lender’s security interest in the property

Topic 17.1 Check-In

Anatomy of a Loan

Choose the best answer for each question, then select Check Answers.

Hypothecation is best described as:

Hypothecation is pledging property as collateral while keeping ownership.

Which instrument is evidence of the debt?

The promissory note is evidence of the debt and the borrower’s promise to repay.

🔒 Mark Complete unlocks when every answer is correct.