If your mortgage rate lock is about to expire, you have options besides panicking or accepting whatever new rate a lender offers. Suppose you locked $420,000 at 6.75% thirty days ago and your closing slipped past the deadline. Left unmanaged, that delay could push you to a rate near 7.125%, adding roughly $100 to your monthly payment and about $6,000 over five years. This guide walks through exactly what to check, who to call, and how to decide between an extension, a relock, or shopping the market, with the math laid out so you can see what’s actually at stake.
Duane Buziak, Mortgage Maestro, NMLS #1110647
Step 1: Confirm Your Exact Lock Expiration Date and Terms
Pull the lock confirmation your loan officer emailed you when you locked the rate. It should list the exact expiration date and, often, the exact time of day the lock lapses, not just a month or a “closing window.” Read it line by line: the locked rate, any points you paid or were credited, and whether the agreement includes a float-down provision or an automatic short extension if closing slips by a day or two.
The most common mistake at this stage is assuming “closing by end of month” is the same as the lock deadline. It isn’t. Most locks expire several business days before the scheduled closing date to give underwriting, the title company, and the lender’s closing department time to finish processing. If your closing is scheduled for the 30th and your lock expires on the 27th, you have less breathing room than you think.
A rate lock is a lender’s commitment to hold a specific interest rate and point structure for a defined period, typically 15, 30, 45, or 60 days. A basis point is one one-hundredth of a percentage point (0.01%), the unit lenders use to price extensions and adjustments. If your lock confirmation doesn’t spell out these terms clearly, or if you can’t find the original email, ask your loan officer to resend it in writing before you do anything else. Verbal assurances about “we’ll take care of it” don’t hold up if there’s a dispute later about which rate applies at closing. Get the paperwork in hand first, then move to the next step.
Step 2: Contact Your Loan Officer Before the Lock Lapses
Reach out at least 5 to 10 business days before your lock expires. Extensions and relocks are far easier to negotiate before the deadline passes than after; once a lock lapses, you lose leverage and may be quoted whatever the current market rate happens to be, with no room to negotiate the fee.
Ask directly: “What happens if we close after the lock expires?” Get the answer in writing, ideally as an email you can reference later, not a phone call you’ll have to reconstruct from memory. Lenders handle expired locks differently. Some automatically relock at the worse of the original rate or the current market rate. Others simply move you to whatever rate is available that day. You want to know which policy applies to your loan before it becomes relevant.
Before you call, have your loan number and a rough sense of where your file stands in underwriting or closing prep. If your loan officer can see that closing disclosures are already out and the file is in final review, the delay may be a formality that resolves with a short, low-cost extension. If underwriting conditions are still outstanding, that changes the conversation and possibly the cost of an extension.
This is also the moment to ask about a float-down option, if your lock agreement includes one. A float-down lets you capture a lower rate if the market has improved since you locked, usually for a one-time fee or a small rate adjustment. Not every lock includes this feature, and it’s worth confirming rather than assuming.
Step 3: Ask About Extension Options and What They Cost
Lock extensions are typically priced in short increments, commonly 7, 15, or 30 additional days, with a cost expressed in basis points added to your rate or as a flat fee added to closing costs. A 15-day extension might run somewhere in the range of an eighth to a quarter of a point, though pricing varies by lender, loan program, and how far rates have moved since you locked.
The question that matters most here is who pays. Ask your loan officer directly whether the extension fee can be absorbed by the lender or loan officer rather than passed to you. This varies by lender and, importantly, by the reason for the delay. If the holdup is on your end (slow document turnaround, a title issue you needed to resolve, a late appraisal you requested), you may reasonably be expected to cover it. If the delay originated with the lender, such as an underwriting backlog or a processing bottleneck, you have grounds to ask for a no-out-of-pocket closing option for the extension instead of assuming the cost falls on you by default.
Don’t accept a vague answer like “it depends” without a follow-up. Ask for the specific extension increments available, the cost of each, and whether that cost is negotiable given the circumstances. A loan officer working in your interest should be able to answer this within a day, not string you along past the deadline. If you’re getting evasive answers this close to expiration, that’s itself useful information about how the rest of the transaction is likely to go.
Step 4: Run the Numbers, Extend, Relock, or Take a New Rate
Once you know the extension cost, compare it against the cost of simply relocking at today’s rate or starting fresh with a new application elsewhere. Here’s a worked illustration. On a $420,000 loan, moving from a locked 6.75% to a new rate of 7.125%, a 0.375 percentage point increase, adds roughly $100 to the monthly principal and interest payment, or about $6,000 over five years. Compare that to a typical short-term extension fee, which is usually a fraction of that cost if your closing is only a few days out.
Current mortgage rates move week to week, so check the Freddie Mac Primary Mortgage Market Survey before deciding. If market rates have dropped since your original lock, a relock at the new lower rate may actually work in your favor, and there’s no reason to pay extra to hold your original rate. If rates have risen, an extension that preserves your original rate is usually the cheaper path, assuming your closing timeline is short.
- Lock Extension: Cost is typically a small fee or basis-point adjustment for 7 to 30 extra days; timeline is fast since your file stays with the same underwriter; rate risk is low because you keep your original rate.
- Relock: Cost resets to current market pricing, which could be better or worse; timeline is moderate, often requiring updated disclosures; rate risk depends entirely on where the market has moved.
- New Application Elsewhere: Cost includes a fresh appraisal, title work, and underwriting fees in some cases; timeline is the longest, often 20 to 35 days; rate risk is offset by the ability to shop terms across multiple lenders before committing.
Weigh these three side by side against your actual closing date, not a hypothetical one. If you’re five days from closing, a new application isn’t realistic. If your closing has already slipped once, it might be exactly the reset you need.
Step 5: Gather Any Updated Documents the Lender Requests
Both relocks and extensions can trigger a documentation refresh. Underwriters often require recent pay stubs, updated bank statements, or a new verification of employment if enough time has passed since your original approval. This is standard, not a sign that something has gone wrong with your file.
Respond within 24 to 48 hours. Every day you sit on a document request is a day closer to a second expiration, and second delays are harder to negotiate favorably because they suggest a pattern rather than a one-time hiccup. If you’re self-employed or have variable income, expect the document list to be longer, potentially including updated profit-and-loss statements or additional bank statement cycles, and plan your response time accordingly.
Ask specifically whether a new credit pull is required as part of the relock. Some lenders require it, particularly if more than 90 to 120 days have passed since the original pull; others don’t, especially for short extensions. This matters because an additional hard inquiry can have a small, temporary effect on your credit score, and you’ll want to know that going in rather than being surprised by a credit alert mid-transaction. If a new pull is required, ask whether it will be a hard or soft inquiry and how it fits into the underwriting timeline you’re already working against.
Step 6: Decide Whether to Stay or Shop Your Rate
If your current lender’s extension or relock terms feel unfavorable, an independent comparison across hundreds of wholesale lenders can reveal alternatives without a hard credit pull. This is worth doing even under time pressure, because a lock expiration sometimes exposes that your current pricing was never as competitive as it could have been. Services like Grand Rates run this kind of comparison at no cost and without impacting your credit, so you can see where you stand before committing to a new lock with your existing lender.
Switching lenders isn’t free of friction, though. A new lender may require a fresh appraisal, new title work, or a full timeline reset, which can add weeks rather than days. Factor that cost and delay into any rate savings you’re weighing. If the difference is a quarter point and your current transaction is close to closing, staying put and paying a modest extension fee is usually the more practical choice. If the gap is wider, or your current lender’s communication has been unreliable, a switch may be worth the extra time.
Loan program eligibility is also part of this decision. The FHFA conforming loan limit for most of Virginia sits at the national baseline for 2026, with higher limits in certain higher-cost counties; verify the figure for your specific county before assuming your loan amount qualifies for standard conforming pricing rather than a jumbo tier, since that affects which rate bracket and lender pool you’re comparing against.
Step 7: Get the New Lock Confirmed in Writing
Whatever you decide, extension, relock, or a new lender, request a new written lock confirmation before closing. It should show the updated rate, any points paid or credited, and the new expiration date spelled out clearly. Don’t rely on a verbal confirmation from a phone call or a text message summary.
Check the new expiration date against your actual closing date and build in a buffer of at least 3 to 5 business days. If your closing slips again, even slightly, you want margin so you’re not back in the same situation a second time. Ask your loan officer to flag the new expiration date on their end as well, so it isn’t something you’re tracking alone.
Save every piece of correspondence related to the lock: the original confirmation, the extension or relock request, and the new written confirmation. If there’s ever a dispute about which rate applies at closing, and it does happen occasionally when files change hands between processors, having a clear paper trail resolves it quickly instead of turning into a last-minute argument at the closing table.
Frequently Asked Questions About Expiring Rate Locks
What happens if my rate lock expires before closing?
Depending on the lender’s policy, you may be relocked at the worse of your original rate or the current market rate, or simply moved to whatever rate is available that day. Ask your loan officer for the specific policy in writing before it becomes relevant.
Can I extend a mortgage rate lock for free?
Sometimes, particularly if the delay was caused by the lender rather than the borrower. Ask specifically whether a no-out-of-pocket closing option applies to your situation.
How much does a rate lock extension cost?
Costs vary by lender and by how many extra days you need, typically priced in small basis-point increments for 7, 15, or 30-day extensions. Get the exact figure in writing rather than an estimate.
Can I relock at a lower rate if rates dropped?
Often yes, since a relock resets pricing to current market levels. Check the Freddie Mac PMMS to see where rates stand before assuming your original locked rate is still the better deal.
Does a rate lock extension require a new credit check?
Not always. Short extensions frequently don’t trigger a new pull, but relocks after a longer gap, often 90 to 120 days, sometimes do. Ask your loan officer directly.
How long can a mortgage rate lock be extended?
Extensions are usually offered in increments of 7 to 30 days, and some lenders allow multiple sequential extensions if a file needs more time.
What is a float-down option?
A float-down lets you capture a lower rate if the market improves after you lock, usually for a fee or small rate adjustment. Not all lock agreements include one, so check your original confirmation.
Can I switch lenders if my lock is about to expire?
Yes, though a new lender typically means a fresh appraisal, new title work, and a longer timeline. Weigh potential rate savings against that added time before deciding.
Is a rate lock legally binding?
It’s a contractual commitment between you and the lender for the locked terms during the lock period, subject to the conditions in your specific agreement. Review your lock confirmation for the exact language that applies.
What documents does the CFPB require lenders to disclose about locks?
Lenders must provide clear disclosures about loan terms and costs under federal rules; you can review consumer protections around mortgage disclosures at consumerfinance.gov.
What to Do Once Your New Lock Is Set
Check your lock expiration date today. If it falls within the next 10 business days, call your loan officer this week, not next week, and get the extension or relock policy in writing before the deadline passes. Compare your options before signing anything, including whatever your current lender offers. Get your free personalized rate comparison from an independent consultant recognized as one of Virginia’s top loan officers, with no obligation, no hidden fees, and no hard credit pull required to see where you stand.
