Mortgage Pre-Approval: What It Actually Guarantees (and Doesn't)

A pre-approval involves a lender reviewing your income, debt, and credit to estimate what you'd qualify for, and typically holds a specific interest rate for a set window — commonly 90-120 days — protecting you if rates rise while you shop.

This is different from pre-qualification, a much rougher, often self-reported estimate with no real underwriting behind it and no rate hold — useful for a very early sense of range, not for shopping with confidence.

A pre-approval is not a guarantee of final approval. Your actual mortgage still requires full underwriting once you have a specific property — including an appraisal, and verification that nothing about your financial situation changed between pre-approval and closing (a new car loan or job change in between can genuinely derail things).

Getting pre-approved before house-hunting seriously is still worth doing — it sets a realistic price range and signals to sellers that you're a serious, qualified buyer — just don't treat the number as untouchable once you find a specific home.