The timeline to protect
Before the event: Get the complete lock terms in writing
At the trigger: Build schedule margin before expiration
Afterward: Separate market movement from application changes
Before: Identify exactly what has been locked
Do not treat a verbal rate quote as the complete commitment. Confirm the interest rate, points or credits, loan type, lock date and expiration. Ask whether the lock depends on a property type, occupancy, credit profile or loan-to-value assumption. If one of those inputs changes, the pricing may change even though market rates did not.
During: Work backward from a realistic closing date
Map appraisal, underwriting, title work, insurance, document review and any contingency deadlines. A lock that expires on the optimistic closing date has no operating margin. Compare the cost of a longer initial lock with the risk and price of extending later. Clarify whether weekends, holidays or a delayed signing affect the expiration.
After: Define the delay rules before a delay happens
Ask how an extension is requested, how it is priced and whether a lender-caused delay is treated differently from a borrower or property delay. Also ask whether a float-down option exists and what it costs. The goal is not to predict rates; it is to know the consequences of the schedule you are accepting.
Dates and conditions to capture
- Which rate, points and credits are locked?
- What date and time does the lock expire?
- What is the extension price and approval process?
- Which application changes permit repricing?
Save the dates and trigger points
Keep the lock confirmation beside the Loan Estimate and closing calendar. Note every changed assumption and schedule delay in writing. When a revised estimate arrives, compare it with both documents so you can distinguish a justified application change from an unexplained pricing change.
Primary source: CFPB mortgage resources.
Build a lock calendar before relying on the rate
Write the lock date, expiration date, scheduled closing date and the last practical day for underwriting conditions. Leave room for appraisal, document and title delays. A lock that expires on closing day has no operational buffer, even when its number of days initially looked sufficient.
Ask what happens in three delay cases
- Lender-caused delay: who pays for an extension and what evidence is required?
- Borrower-caused delay: what is the extension price and can the rate change?
- Market improvement: is there a float-down option, and what fee or threshold applies?
Get the answers in the lender's lock confirmation, not only in a call summary. Confirm the locked rate, points or credits, loan program, property address and expiration. If any of those differ from the application, request correction promptly. Recheck the Loan Estimate after the lock because lender credits and cash to close can change with the selected pricing.
Coordinate the surrounding dates: Put the related deadlines on the same calendar so one delayed step does not invalidate another. Use the same loan amount, holding period and cash assumptions when moving from the lender-credit and rate tradeoff to a line-by-line Loan Estimate comparison; otherwise two apparently different choices may only reflect different inputs. See the mortgage quote and rate comparison path for the complete sequence.
Put every date and condition in one place
A timing decision is only reliable when dates, notices and fallback actions are recorded.
Protect the deadline and the fallback
A mortgage rate lock is useful only when the locked rate, points, lender credits and expiration date are documented and the closing plan fits inside the lock period. Ask what can change the lock and who pays when a provider-caused delay requires an extension.
Build your mortgage comparison brief →This guide provides general education. Examples are illustrative, not market quotes. Verify current product terms and obtain individualized advice when needed.