
Mortgage interest rates are still below 4% -- after having spent November 2016 through May 2017 between 4% and 4.5%. Today's buyers are enjoying the opportunity to lock in their monthly housing costs at historically low rates.
And -- let's look a bit further back -- at the past three years....

As you can see, above, mortgage interest rates have fluctuated between 3.5% (+/-) and 4.25% (+/-) over the past three years.
If you were prequalified for a loan nine months ago (when rates were at 4.3%) you might want to request some updated potential payment scenarios from your lender with the current mortgage rates.