Pull your credit before anyone else does
Get all three reports — Equifax, Experian, TransUnion — at annualcreditreport.com. Lenders price loans off the middle score. A 620 gets you in the door for FHA; a 740+ unlocks the best conventional pricing.
Dispute errors now. Pay down revolving balances below 30% of the limit. Do not close old accounts — length of history matters.