Absolutely. Residential Mortgage Solutions provides a variety of options to lock in your interest rate. Locking your rate means that the lender is agreeing to provide you with your mortgage at that particular rate, and that it won’t go up (or down) between the time you lock it and the time that you close on your home. If your mortgage is fixed-rate, your interest rate will remain the same throughout the life of the loan. Mortgage interest rates fluctuate constantly, and you don’t want to start shopping for a house operating under a certain interest rate assumption, only to be unpleasantly surprised that interest rates have risen during your house hunt.