Mortgage Rate Lock in Northern Virginia: Lock Now or Float?
Mortgage Rate Lock in Northern Virginia: Lock Now or Float?
Mortgage Rate Lock in Northern Virginia: When to Lock, Float & Extend
Lock your mortgage rate as soon as your Northern Virginia contract is ratified, and choose a lock that runs at least 10 days past your scheduled settlement date. Freddie Mac's 30-year average jumped to 7.28% this week, up from 7.03% the week before, so floating is a bet against a market that's moving the wrong way. Most Fairfax and Loudoun resale contracts settle 30–45 days after ratification, which makes a 45-day lock the usual fit, while jumbo loans, condos, and new construction often need 60 days. If settlement slips past your lock, you'll pay an extension fee that scales with the delay, so ask your lender for that price in writing before you need it.
- A quarter-point rate move on a $560,000 loan changes your payment by about $94 a month.
- Fairfax and Loudoun resale settlements usually land 30–45 days after ratification, so lock 45–60 days.
- Float-downs are not standard, and the rate drop required is often bigger than buyers expect.
- Appraisals, condo reviews, and HOA packets are the usual causes of delays that burn through a lock.
- Ask your lender for the extension price in writing, then request a free home valuation or consultation.
Lock vs. Float: Why Waiting Costs More Than It Saves & When It Makes Sense
Here's what I tell every buyer who asks whether to wait for a better rate: you're not timing the market, you're guessing at it. Freddie Mac's weekly survey put the 30-year fixed at 7.28% on October 1, 2026 — up from 7.03% a week earlier and 6.34% a year ago, and the highest reading since November 2023. When rates move a quarter point in a single week, one bad week can erase whatever you hoped to save by waiting. (For the bigger picture on what these rates mean for your search, read my breakdown of what 7%+ rates mean for Northern Virginia buyers and sellers.)
The math is what makes floating risky. On a $700,000 home with 20% down, you're financing $560,000. Here's how much each move costs you in principal and interest on a 30-year fixed:
- +0.25% (7.28% to roughly 7.53%): about $94 more per month, or roughly $1,100 a year.
- +0.50%: about $190 more per month, or roughly $2,300 a year.
- On a $1,000,000 home with a $800,000 loan, a quarter point is about $135 a month.
Floating can make sense in narrow cases: you're weeks from a rate-sensitive data release your lender expects to help, you have real cushion in your debt-to-income ratio, and a higher rate wouldn't change whether you can close. If a rate jump would push you over your qualifying limit, don't float. A denied loan costs far more than a missed dip.
Timing matters, too. Most lenders can't lock a rate until you have a ratified contract and an identified property, so your real decision point is the day your offer is accepted. Call your loan officer that day, not the day your inspection ends. If you're weighing an adjustable product to soften today's rate, compare it against a fixed loan in my guide to ARM vs. 30-year fixed in Northern Virginia, and ask whether a seller-paid buydown beats a price cut using this buydown comparison.
Lock Length: Matching 30, 45 & 60 Days to a Northern Virginia Settlement Date
A lock only protects you if it outlasts your settlement date. Common lock periods run 30, 45, and 60 days, and longer locks cost slightly more because your lender prices in the cost of holding that rate longer. That difference is generally modest. Running out of lock is not. Your contract sets the settlement date, so build the lock from the contract, not the other way around.
$700,000 Home: Reston, Vienna & Loudoun County Corridors
A standard conventional purchase in Reston, Vienna, or Ashburn typically settles 30–45 days after ratification. A 45-day lock is the usual default. If your contract includes a radon contingency, a repair negotiation, or an HOA Resale Disclosure Packet with its 3-day right of rescission, pad the lock to 60 days instead of hoping nothing slips.
$1,000,000+ Home: McLean, Tysons & Arlington
Loans above the 2026 conforming limit for our area — $1,249,125 — are jumbo loans, and they usually come with deeper underwriting and tighter appraisal scrutiny. One-of-a-kind properties in McLean and Arlington can be harder for an appraiser to compare, which adds days. Plan on a 60-day lock for jumbo purchases and ask your lender whether it's priced differently from a 45-day lock.
$450,000 Condo: Burke, Annandale & Parts of Fairfax
Condos add a second review: your lender examines the building, not just you. In Virginia, the Condo Resale Certificate and HOA documents also start a 3-day right of rescission, as I explain in my guide to the 3-day right of rescission for condo and HOA buyers. If the project is flagged, read about non-warrantable condo financing before you pick a lock length. A 60-day lock is the safer choice for any condo with questions.
New construction is its own animal. Builders often run their own extended lock programs tied to the completion date, so don't assume a standard 45-day lock fits.
When Closing Slips: Lock Extensions, Float-Downs & Who Pays in a Virginia Contract
Most lock problems are delay problems. The usual culprits in Fairfax, Loudoun, and Prince William transactions: a slow appraisal, a low appraisal that forces renegotiation, a condo or HOA document that arrives late, a repair negotiation after the inspection, or a Title/Settlement Company still clearing a lien. Virginia is a caveat emptor state, so buyers carry the responsibility to investigate. That's why the due diligence work you do after ratification is also the work that protects your lock.
If your lock expires before settlement, you have three options, and none of them is free:
- Extend the lock. Extensions are usually available, with a cost that scales with the number of days. Some lenders absorb short extensions when the delay is on their side, but you shouldn't count on that.
- Re-lock at the current rate. If rates have risen, you take the higher rate. If they've fallen, you may actually benefit.
- Negotiate who pays. If the delay stems from the seller or a missing document the seller controls, your agent can ask the seller to cover the extension through a credit at the Title/Settlement Company.
Float-down provisions let you take a one-time lower rate if the market improves during your lock. They aren't standard, they usually carry a fee or conditions, and the improvement needed to trigger one is often larger than buyers assume. Ask whether the lender offers one and read the trigger threshold before paying for it.
Sellers have a stake here, too. The buyer's lock is the clock on your closing date. If a buyer's lock is about to expire, a short settlement extension in writing is usually cheaper for both sides than a failed closing. And if you're a seller, remember your own costs: the grantor's tax of $0.25 per $100 plus the NoVA Regional Congestion Relief Fee of $0.15 per $100 add up to $0.40 per $100 at settlement, so a $700,000 sale carries about $2,800 in those two items alone.
Here's the process I walk buyers through, step by step:
- On ratification day, send your lender the executed contract and ask for a lock the same day.
- Match the lock to your settlement date plus a 10-day cushion; choose 60 days for jumbo, condo, or new construction.
- Get the extension price and any float-down terms in writing before you sign the lock agreement.
- Track every contingency deadline, including radon, appraisal, and HOA packet review, and flag slips to your agent and lender immediately.
- If delay looks likely, request the extension early, before the final days when you have the least leverage.
Frequently Asked Questions: Mortgage Rate Locks in Northern Virginia
Q: Should I lock my mortgage rate in Northern Virginia right away?
A: In most cases, yes: lock when your contract is ratified. With the 30-year rate at 7.28% and rising about a quarter point in one week, waiting adds risk without a guaranteed payoff. A quarter-point jump on a $560,000 loan costs about $94 a month. If you're buying in Fairfax County, your lender can usually lock the same day you send the contract.
Q: How long should my rate lock be in Fairfax or Loudoun County?
A: Match it to your settlement date and add about 10 days. Most resale contracts settle 30–45 days after ratification, so a 45-day lock fits most purchases in Leesburg and Fairfax. Choose 60 days for jumbo loans, condos, new construction, or anything with a radon or repair negotiation that could push closing back.
Q: What happens if my rate lock expires before settlement in Virginia?
A: You'll typically pay an extension fee that grows with the number of days, or re-lock at the current market rate. Ask your lender for the extension price in writing when you lock. If the seller caused the delay, your agent can ask for a credit at the Title/Settlement Company. Delays on low appraisals are one of the most common triggers.
Q: Can I lower my rate after I lock it?
A: Only if your lender offers a float-down, and many don't. Float-downs are not standard, often carry a fee, and usually require rates to fall by a meaningful margin before they apply. Compare the cost of a float-down against simply starting with a slightly longer lock, and ask your loan officer for the exact trigger threshold.
Q: Does a rate lock cover my rate and my points?
A: Ask. Virginia Housing advises getting the rate commitment in writing and confirming whether the lock includes both the rate and points. If you're negotiating a seller-paid buydown, confirm the lock reflects it. My comparison of a rate buydown vs. a price reduction shows how to weigh the two. I'm not a lender, so confirm every lock term with your loan officer.
Next Step: Protect Your Rate & Know Your Numbers
If you're also thinking about selling, or want to know what your current home could net in this rate environment, I'd be glad to put together a free home valuation with a personalized net sheet. Find out what your home is worth today. Prefer to talk through your lock and timeline first? Schedule a consultation.
About Samantha Bard, REALTOR®
Samantha Bard is a licensed REALTOR® with Coldwell Banker Realty specializing in the Fairfax County and broader DC Metro real estate markets. As an Accredited Buyer's Representative (ABR) and Seller Representative Specialist (SRS), she provides strategic, detail-oriented guidance to buyers, sellers, and investors navigating everything from first-time purchases to probate sales and out-of-state relocations. She is dedicated to helping clients across Northern Virginia make informed, confident real estate decisions.
License #0225198344 VA | Coldwell Banker Realty | (703) 471-7220
Equal Housing Opportunity
This article is general information, not mortgage, tax, or legal advice. Rates, lock terms, and fees vary by lender; confirm all terms with your loan officer. Rate data: Freddie Mac Primary Mortgage Market Survey, week of October 1, 2026.