When you move into a new home or apartment, the first thing on your checklist should be to have the changed. (5 Letters)

When you move into a new home or apartment, the first thing on your checklist should be to have the locks changed

Explanation:

Changing the locks

Given that the way the previous owners of the new home or apartment made use of the locks and the keys are usually not completely known to the new owners, one may never know all those that have a key or a means to gain access into the apartment or home. Therefore, in order to guarantee proper security, it is a good practice to have as one of the first thing on the checklist, the changing of the locks of the entrance doors and windows of the new home or apartment.