Recently I read a post with this situation put up as a question. As a licensed Locksmith and Realtor I can say 100% re-key. As you will see by the end of post, I am not saying this to help the locksmith but to help the Realtor and Homeowner. With today's locks the Homeowner can change the key in 15 seconds all by them self, no locksmith needed.
The lock is pick and bump resistant, yet easily change when ever needed, All you need is a spare set of keys and the learning tool. I have attached a video to show the process.
I will follow up by saying the burglar will look for the soft spot to enter your house. If the front door looks hard they go find another way in, backdoor or window. Putting top of the line locks on the door may keep them from entering through the front door, but may not keep them out all together.
These lock are great for rentals and property managers, fast re-key done on the spot.
If any one has any question feel free to drop me a line and I will do my best to get you an answer.