A rate lock is a lender’s written agreement to hold a specific mortgage interest rate for you for a set period, usually 30 to 60 days, while your home loan moves toward closing. Whether you should lock in now or wait depends on where rates are trending, how close you are to closing, and how much risk you’re willing to carry on your monthly payment.
We’ve helped thousands of Utah families finance new homes since 2008, and the rate lock decision comes up in nearly every conversation we have. It’s one of the few moments in the homebuying process where timing genuinely affects what you’ll pay each month for the next 30 years.
Here’s what you need to know to make the call with confidence.
What’s a Rate Lock, Exactly?
A rate lock is a guarantee from your lender. Once locked, your interest rate won’t change between application and closing, even if the market shifts. According to the Consumer Financial Protection Bureau, most rate locks last 30, 45, or 60 days, though longer locks are available for new construction.
A few specifics that matter:
- Lock period: Typically 30 to 60 days for resale homes. For new construction, lenders often offer 90, 180, or even 360-day locks.
- Lock fee: Short locks are usually free. Extended locks may cost 0.25% to 1% of the loan amount.
- What’s locked: Your interest rate, points, and sometimes the loan program. Closing costs aren’t locked.
- Float-down option: Some lenders let you lower your rate once if the market drops before closing. This usually costs extra.
Without a lock, your rate floats with the market until closing day. That works in your favor when rates are dropping. It works against you when they’re climbing.
Should You Lock In Now or Wait?
This is the question that keeps buyers up at night. The honest answer: lock when you’re within your closing window and the rate works for your budget.
Here’s a simple framework we share with buyers shopping our Utah communities:
- Lock now if: You’re within 60 days of closing, the current rate fits your budget, and you’d lose sleep if rates jumped half a point next week.
- Wait if: You’re more than 60 days out, you can comfortably afford a higher payment, or your lender offers a free float-down if rates drop.
- Consider an extended lock if: You’re building new and closing is 4 to 9 months away. The fee is often worth the peace of mind.
The Federal Reserve’s decisions influence mortgage rates, but not directly. Mortgage rates track the 10-year Treasury yield more closely. Trying to time the bottom is a losing game, even for professionals.
A 1% rate change on a $450,000 loan adds or subtracts roughly $280 a month. Over 30 years, that’s about $100,000. Locking when the math works for your family budget beats waiting for a perfect rate that may never come.
What Happens If Rates Drop After You Lock?
If you don’t have a float-down option, you’re locked into the higher rate. Some buyers refinance later if rates fall significantly, usually 0.75% or more below their locked rate. Refinancing carries its own costs, so it only makes sense when your savings clearly outweigh them.
How Rate Locks Work for New Construction Homes
New construction adds a wrinkle: you’re often 4 to 9 months from closing when you sign. A standard 60-day lock won’t cover your timeline.
For buyers in our master-planned communities, we work with First Colony Mortgage and other lenders who offer extended locks designed for new builds. These typically include:
- 180 to 360-day lock periods
- An optional float-down if rates fall before your closing
- Your locked rate plus a small premium for the extended timeline
If you’re a first-time buyer working through our first-time home buyer checklist, ask your loan officer about extended locks early. Knowing your payment ceiling makes it easier to plan everything else, from closing costs to your design studio choices.
How We Support You Through the Financing Process
We’ve been building in Utah since 2008, and we know the financing piece of homebuying can feel overwhelming. That’s why we’ve built relationships with mortgage partners who understand new construction timelines and offer rate lock products that fit how we build.
Our team walks you through the financing conversation alongside your floorplan and design choices. You won’t get handed off and told to figure out the loan on your own. We connect the dots between your budget, your closing timeline, and your rate lock options so the numbers make sense before you sign.
With 30+ floor plans across single-family homes, townhomes, and condos in Salt Lake and Utah Counties, we have an option for nearly every budget, starting in the high $300s. Designed For Life means designed for your real financial picture, too.
FAQs
How long does a typical rate lock last?
Most rate locks last 30 to 60 days, which covers a standard resale closing timeline. For new construction, extended locks of 90, 180, or 360 days are common because builds take longer. Your lender will quote different rates and fees for each lock length, so ask for a side-by-side comparison before you decide.
Does a rate lock cost money?
Short locks of 30 to 60 days are usually free. Extended locks for new construction typically cost 0.25% to 1% of the loan amount, depending on length and whether you want a float-down option. On a $400,000 loan, that’s $1,000 to $4,000, often rolled into your closing costs.
Can I break a rate lock if rates drop?
Technically yes, but it usually means switching lenders and starting over, which costs you time and money. The smarter move is asking upfront about a float-down option, which lets you lower your rate once before closing if the market drops. Some lenders include it free; others charge a small fee.
What happens if my closing is delayed past the lock expiration?
You’ll typically need to extend the lock, which costs a fee, or relock at current market rates, which could be higher or lower than your original rate. This is why you should choose a lock period with built-in buffer time when you’re building. We help our buyers align their lock timing with realistic build schedules so you’re not caught off guard.
Should first-time buyers lock in or wait?
If you’re a first-time buyer, you should usually lock as soon as you’re under contract and within your lender’s lock window. Budget certainty matters more than chasing a slightly better rate. Our guide for first-time home buyers walks you through how to evaluate your full payment, not just the rate.
Conclusion
A rate lock protects your monthly payment from market swings between application and closing. Lock when you’re inside your closing window, and the rate fits your budget. Don’t try to time the bottom, because nobody consistently wins that game.
Ready to see what your payment could look like in one of our communities? Schedule a visit to tour our floor plans, meet our team, and connect with a lender who can walk you through your rate lock options. Designed For Life starts with a home and a payment built around your life.