If you find yourself with lost or stolen house keys the first thing you will want to do is change out the locks to your house. While a locksmith would be capable of fitting a key for your lock if you don’t know where the original key is then you will definitely want a different lock so you know where the only keys are.
Changing door locks is a pretty simple process, the screws attaching the knob to the door will be on the inside of the house and you will want to keep it that way when you fit the new lock in, other than that just make sure the bolts fit into the hole in the frame known as the mortise. This will restore the lock security to your home and make it so you can get back to going in and out of your home again.