When Should You Lock a Mortgage Rate in Alberta?
Short answer
Lock a mortgage rate when you are seriously shopping and market rates are acceptable for your budget — typically at pre-approval or when you have an accepted offer approaching closing. Most holds last 90–120 days. Locking too early without a clear timeline risks expiry; locking too late risks repricing if rates rise.
The plain-English version
A rate hold is a lender's promise to honour a quoted rate for a set period while your application progresses. It is not final approval — income, credit, property, and appraisal still must pass. The best time to lock depends on your closing timeline: resale buyers often hold at pre-approval; new-build buyers may need extended or renewable holds.
If rates are rising quickly, locking earlier protects your payment estimate. If rates are falling, some lenders let you access the lower of the held rate or current rate at funding — but that is lender-specific, not guaranteed. Have a plan for both directions before you lock.
Alberta-specific considerations
- Alberta resale transactions often close in 30–60 days — a standard 120-day hold at pre-approval usually covers the search and closing window.
- New-build and acreage purchases with longer timelines should confirm hold length and extension fees before committing.
- Self-employed buyers may need documents ready before locking — a hold without an underwritten pre-approval is weaker protection.
Example scenario
You get pre-approved in March with a 120-day hold at 5.24% fixed while shopping in Calgary. You find a home in May and close in July — within the hold window. If rates rose to 5.49% during your search, the hold saved roughly $60/month on a $400,000 mortgage compared to repricing at closing.
Common mistakes to avoid
- Treating a rate hold as guaranteed final approval.
- Letting a hold expire during a delayed closing without requesting an extension.
- Locking at one lender and assuming another will match without a new application.
- Locking a rate before confirming you can afford payments at the stress-tested qualifying rate.