I installed this deadbolt on the door that connects my laundry room and garage. Previously, the lock on there was in a little rough condition and I wanted to have an extra layer of security, just in case we forget to close the overhead garage door. This was fairly easy to install if you just follow the instructions. I would say the only extra work you might have to do is making sure that the deadbolt latch and faceplate fit securely in the current hole/spacing on your door. The SmartKey actually works too and your able to rekey your own door, to a certain extent. Pretty cool deadbolt and easy to install.