Mortgage credit is different from consumer credit
Mortgage lenders pull a tri-merge report from Experian, Equifax, and TransUnion using older FICO models (FICO 2, 4, and 5) — not the FICO 8/9 score you see on Credit Karma or your bank app. The mortgage-median score (middle of the three) is what qualifies you.
The practical effect: your mortgage score is often 20–40 points lower than your app score. Don't be surprised. Underwriters use the middle score of the primary borrower for pricing.
The five highest-impact moves, ranked
1. Pay revolving balances below 30% of limits, ideally under 10%. Utilization is 30% of your score. This alone can move a score 20–50 points in one billing cycle.
2. Do not close any accounts. Closing a card lowers your available credit (raising utilization) and eventually shortens average account age.
3. Dispute stale collections and re-aged tradelines. Anything older than 7 years should be off your report. Medical collections under $500 should not appear at all.
4. Become an authorized user on a spotless family card. Adds age and lowers utilization instantly.
5. Rapid rescore after paydowns. Ask your loan officer — a rapid rescore updates all three bureaus in 5–10 business days after you've paid down balances, so you get credit for the changes before locking.
What to avoid during a mortgage credit build
Do not open new tradelines in the 6 months before you apply. Every hard inquiry costs 3–8 points, and a brand-new card lowers average account age.
Do not pay off and close — pay off and keep open. Closing a paid card is one of the most common self-inflicted score drops.
Do not settle old debts for less than owed without checking with your loan officer first. A settled collection can re-age (become recent) and drop your score in the short term.
Is this path right for you?
Frequently asked questions
How long does it take to raise a mortgage credit score?
Utilization moves show up in 1 billing cycle (~30 days). Dispute resolutions take 30–45 days. Rapid rescore updates all three bureaus in 5–10 business days.
Should I pay off my car loan to improve my score?
Only if it also improves DTI. Paying off an installment loan often causes a small temporary score drop (loss of credit mix), but the DTI improvement usually matters more for qualification.
Do credit-repair companies actually help?
Rarely. Anything a paid credit-repair company can do, you can do free — dispute directly, pay down revolving, negotiate directly. Loan officers can rapid-rescore for free at application.
Related guides
- The Complete First-Time Homebuyer's Readiness Guide
- How much home you can actually afford
- Pre-approval checklist
- Back to the Knowledge Base
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