You are locked into a mortgage lender at one specific moment: when you sign the promissory note and the mortgage (or deed of trust) at closing. Every stage before that signature raises the financial cost of walking away, but none of them create a legal obligation to go through with the loan. Knowing exactly where each step falls on that spectrum is what lets you shop without feeling trapped early and without switching so late that it wrecks your purchase.
Before You Signal Intent to Proceed
The earliest stage carries almost no commitment. When you apply for a mortgage, the lender must give you a Loan Estimate showing projected rates, fees, and monthly payments. The only fee a lender is allowed to charge before delivering that estimate is the cost of pulling your credit report.1Consumer Financial Protection Bureau. How Much Does It Cost to Receive a Loan Estimate? Appraisal fees, underwriting charges, application costs: all off-limits until later.
Once a Loan Estimate is in your hands, the lender must honor those terms for 10 business days.2Consumer Financial Protection Bureau. Intent to Proceed – What Does That Mean? If you don’t respond, the lender can revise the terms and reissue. You owe nothing beyond the credit report fee, and you can walk with zero consequences.
After You Signal Intent to Proceed
When you tell the lender you want to move forward, that is “intent to proceed.” It can happen however you choose: signing a form, sending an email, calling your loan officer, or clicking a button on a portal.3Consumer Financial Protection Bureau. 12 CFR 1026.19 – Certain Mortgage and Variable-Rate Transactions Nothing about this step requires a formal contract and nothing about it locks you in.
What changes is what the lender can charge. After you signal intent, the lender can order an appraisal, run underwriting, and bill you for those services.3Consumer Financial Protection Bureau. 12 CFR 1026.19 – Certain Mortgage and Variable-Rate Transactions A single-family appraisal typically runs $500 to $800, and the combined early fees can reach $1,000 or more depending on the property and loan type. Those costs are usually nonrefundable, so they become your first real financial stake. They are not a legal tie. If you walk, you lose the fees and nothing else.
After You Lock Your Rate
A rate lock freezes your interest rate for a set period while underwriting and closing proceed. Most locks last 30, 45, or 60 days.4Consumer Financial Protection Bureau. What’s a Lock-In or a Rate Lock on a Mortgage? The agreement spells out the rate, the duration, and the expiration. If market rates climb while your lock is in effect, your rate stays put.
Standard 30- to 45-day locks at many lenders carry no separate upfront fee, because the cost is baked into the rate. Longer locks of 60 days and beyond more commonly carry an explicit fee, often 0.125% to 1% of the loan amount depending on how long you need the rate held. Your Loan Estimate will show whether your rate is locked but won’t spell out the cost of extending it, so ask upfront.4Consumer Financial Protection Bureau. What’s a Lock-In or a Rate Lock on a Mortgage?
If closing is delayed and the lock expires, you’ll typically pay an extension fee of 0.25% to 1% of the loan amount, sometimes a flat fee instead. Some lenders split that cost with you if the delay wasn’t your fault; a few don’t charge for extensions at all. A rate lock still doesn’t legally bind you to the lender. Walking away means forfeiting the lock fee and your other sunk costs, but the lender cannot force you to close.
After the Commitment Letter and Clear to Close
A loan commitment letter means the lender has finished underwriting and agreed to fund your mortgage, with conditions. Common conditions include a final employment verification, proof of homeowner’s insurance, or resolution of a title issue. The letter lays out the approved loan amount, repayment term, and interest rate, but it is not yet a green light to close.
The real milestone is the clear-to-close notice that follows. Every condition in the commitment letter has been satisfied, the lender has granted full approval, and the file moves to the closing department for document preparation. Read both documents carefully and confirm the numbers match what you were originally quoted. Discrepancies are far easier to resolve now than at the closing table.
Even with a clear to close in hand, you are not legally committed. You could switch lenders or abandon the loan. The practical cost of doing so is steep by this point, because the appraisal and processing fees have already been paid and a new lender would restart underwriting from scratch.
The Closing Disclosure Waiting Period
Federal rules require the lender to deliver your Closing Disclosure at least three business days before the scheduled closing.5eCFR. 12 CFR 1026.19 – Certain Mortgage and Variable-Rate Transactions This document shows every final number: your actual interest rate, monthly payment, closing costs, and cash needed at the table. Compare it line by line against your original Loan Estimate.
Three specific changes reset the three-day clock, forcing the lender to issue a corrected disclosure and start the waiting period over: the APR becomes inaccurate, the loan product changes, or a prepayment penalty is added.6Consumer Financial Protection Bureau. TILA-RESPA Integrated Disclosure FAQs Other revisions, like a shift in closing costs, can appear on a corrected disclosure without resetting the clock. This waiting period is your last off-ramp before signing creates a legal obligation.
At Closing: The Legal Line
This is where the answer flips. When you sign the promissory note, you make a legally enforceable promise to repay the debt. When you sign the mortgage or deed of trust, you pledge your property as collateral for that promise. These documents are typically signed in front of a notary at a title company or attorney’s office and are recorded at the local land records office afterward.
Closing costs at this stage generally run 2% to 5% of the loan amount, not the purchase price.7Fannie Mae. Closing Costs Calculator They cover lender fees, title insurance, prepaid taxes and insurance, and recording fees. Once the documents are signed and recorded, the lender holds a lien on your property and can enforce repayment through foreclosure if you default. Before this moment, you were a borrower who could leave. After it, you have a mortgage.
The Narrow Three-Day Cancellation Window
Federal law carves out one narrow exception to the finality of closing. For certain loans secured by your primary home, including refinances, home equity loans, and home equity lines of credit, you have three business days after closing to cancel the transaction without penalty.8Office of the Law Revision Counsel. 15 USC 1635 – Right of Rescission as to Certain Transactions The clock starts on the latest of three events: the day you close, the day you receive the rescission notice, or the day you receive your final Truth in Lending disclosures.
For rescission purposes, “business day” means every calendar day except Sundays and federal public holidays.9Consumer Financial Protection Bureau. 12 CFR 1026.2 – Definitions and Rules of Construction Saturdays count. Close on a Wednesday and receive every required disclosure the same day, and your window runs through Saturday at midnight, not Monday.
To cancel, send written notice to the lender by midnight of the third business day. Once you do, the lender has 20 days to return every fee you paid and release any security interest in your property.8Office of the Law Revision Counsel. 15 USC 1635 – Right of Rescission as to Certain Transactions
This right does not apply to purchase mortgages. The statute specifically exempts any transaction that finances the initial acquisition of a dwelling, and the protection is limited to your principal residence, so loans on second homes and investment properties are also excluded. If you’re buying your first home or a vacation house, the signatures at closing are final.
What It Costs to Switch Lenders at Each Stage
Because nothing before closing legally binds you, switching lenders is always technically possible. Whether it’s practical depends on timing.
Sunk costs come first. Application charges, the appraisal, and the credit report fee are almost certainly gone. On the appraisal, you may catch a break: Freddie Mac’s selling guide allows a new lender to accept an appraisal originally ordered by a different lender if certain independence requirements are met.10Freddie Mac. Appraiser Independence Requirements (AIR) FAQ FHA loans have a formal case transfer process that can move both the case number and the appraisal to a new FHA-approved lender.11FHA Connection. Case/Appraisal Transfer – Processing – Help Neither transfer is guaranteed, since the new lender has to accept it, but ask before paying for a second appraisal.
Time is the bigger risk. A new lender restarts underwriting from the beginning, which typically takes 30 to 45 days. If you have a purchase contract with a closing deadline, missing that date has real consequences. The seller can cancel the deal and keep your earnest money, or may grant an extension with a per-diem fee for every day of delay. The earlier you switch, the smaller the risk. Swapping lenders while still comparing Loan Estimates costs nothing. Swapping after you’ve locked a rate and received a commitment letter can cost thousands in forfeited fees and put the purchase itself in jeopardy.