5 costly mortgage renewal mistakes

Mistake 1 — Signing the first offer

Lenders count on inertia. The rate printed on your renewal letter is typically higher than what the same lender offers new clients that week. Simply asking — or having an agent shop the market — routinely beats the letter.

Mistake 2 — Starting too late

Begin 4–6 months before maturity. Rate holds last up to 120 days; starting early means you can lock a rate, keep watching the market, and never negotiate under deadline pressure.

Mistake 3 — Ignoring the rest of the market

At renewal you can move your mortgage to any lender with no prepayment penalty, and most new lenders cover standard transfer costs. Not comparing banks, monolines, and credit unions is leaving money on the table.

Mistake 4 — Renewing the same structure on autopilot

Your life has changed since you signed. Renewal is the free moment to change amortization, consolidate high-interest debt into the mortgage, add a HELOC, or adjust fixed vs variable — with no penalty to restructure.

Mistake 5 — Assuming you won’t qualify elsewhere

Even if your income situation changed, you may have more options than you think — and if staying put truly is best, an honest agent will tell you exactly that. My renewal review is free: I only recommend switching when the math wins.