Once the mortgage lender states they have locked your rate, make sure you get a written statement detailing the interest rate, the length of the rate lock, and other particulars about the program.
Option A
New Mortgage
You are looking for a new mortgage for a new home
Option B
Existing Mortgage
You are looking to get a better deal on your mortgage
Option C
Borrowing Extra
You are looking to borrow more from your home equity