Get pre-approved (not just pre-qualified) before you start seriously touring properties — it tells sellers you're a credible buyer and clarifies your actual budget including taxes and insurance, not just the loan amount.
Budget for closing costs (commonly 2-5% of the purchase price) and a cash reserve beyond the down payment — surprises come up in the first year of any property. Always get a professional inspection, and don't skip reading the full disclosure package. Rent estimates and rate quotes from any tool (including this calculator) are estimates — verify current, property-specific numbers with your lender and a local agent before making an offer.