Can a contractor lock in a mortgage rate early?
Yes — when a lender issues your mortgage offer, the rate is held for a set period (often three to six months), so it won't change before you complete even if the market moves. Securing an offer early is how contractors protect against rate rises during a purchase.
What “locking a rate” really means
When people talk about locking in a mortgage rate, they usually mean reaching the point where a lender issues a formal mortgage offer. From that moment, the rate on that offer is held for you for a set period — so day-to-day market movements don’t change what you’ll pay, provided you complete within the window.
It isn’t a separate product you buy; it’s a consequence of getting to offer stage. That’s why, when rates look likely to rise, moving quickly to a full offer is the practical way to protect your position.
How long the lock lasts
Most offers are valid for three to six months, depending on the lender. That’s usually plenty for a straightforward purchase, but chains and new-build completions can run long. If your timeline looks tight, we identify it early — either choosing a lender with a longer offer validity, or planning for a possible extension or re-offer.
What happens if rates move
- If rates rise — you’re protected. Your held rate stands.
- If rates fall — some lenders let you switch down to a newer rate before completion. The policy varies, so it’s worth asking specifically.
Why this matters more for contractors
The whole benefit depends on reaching offer stage, and that’s exactly where contractors get stuck on the high street — a standard assessment can stall or under-read your income. Packaging your contract correctly, on the 46-week method, is what gets you to a firm offer quickly enough to lock in a good rate.
- A mortgage offer holds your rate for a fixed window, commonly 3–6 months.
- If rates fall before completion, some lenders let you switch to the lower rate.
- For contractors, getting to offer quickly depends on a well-packaged contract income case.
- Re-check timing if your purchase is delayed near the offer's expiry.
Rates, answered
How long is a mortgage rate locked for?+
Typically three to six months from the mortgage offer, though it varies by lender. If your completion is likely to fall outside that window, we flag it early and plan around it.
What if rates drop after I lock?+
Some lenders allow you to switch to a newer, lower rate before completion. The rules differ by lender, so it's worth asking at the point of offer.
Can a contractor lock a rate from day one of a contract?+
Often, yes — if a lender will assess your day-rate income and issue an offer, the rate is held like any other applicant's. The key is reaching offer stage, which is where contract-based underwriting matters.