For Mortgage Loan Processors ·
What you'll accomplish
By the end of this guide, you'll have a personal prompt library in ChatGPT — a saved collection of tested, ready-to-use prompts for every common condition type you handle. Instead of thinking about how to phrase a prompt, you'll copy-paste from your library, fill in the borrower details, and get a finished letter in under 2 minutes.
What you'll need
What you should see: The main ChatGPT chat interface.
Think about the condition letter you write most often. For most processors, it's one of these:
Start with whichever one you wrote most recently.
In the ChatGPT chat box, type this prompt with real details from a recent file (use a closed file so you're not testing with live borrower PII):
Draft a condition letter to [BORROWER NAME] explaining that underwriting needs [SPECIFIC CONDITION]. The borrower is [BRIEF DESCRIPTION]. Our target closing date is [DATE]. Use professional business letter format. End with "[YOUR NAME], Loan Processor."
Read the output. Is the tone right? Is it the right length? Does it need any adjustments?
If the letter is too long: add "Keep it under 200 words." If it's too formal: add "Use a warm, approachable tone — borrowers are often anxious." If it's not specific enough: add more details about the condition type.
Once you get a letter you'd actually send (with just a name change), that's your working prompt.
Open Google Docs or a Word document. Create a section called your most common condition type. Paste the working prompt with [BRACKETS] for the parts that change each time:
Example saved prompt — Large Deposit LOE:
Draft a condition letter to [BORROWER NAME] explaining that underwriting needs a Letter of Explanation for the $[AMOUNT] deposit in their [BANK NAME] account on [DATE]. Explain what an LOE is, what it needs to cover (source and nature of the deposit), and that they need to sign and date it. Target closing: [DATE]. Tone: professional but approachable. Keep under 200 words. End with "[YOUR NAME], Loan Processor, [LENDER NAME]."
Repeat steps 3-5 for each of your most common condition types. Typical set for a conventional/FHA processor:
What you should see: A document with 5-8 tested, ready-to-use prompts, each with clear [BRACKETS] for the parts you fill in per borrower.
Every time you write a condition letter: