Safety and security of a property is an important matter if it is a detached house. In this case, you should think of:
Installing an alarm system. The cost of this service depends on the location and the features of a property. It is recommended to choose a big company with a good reputation to make sure that the alarm won’t be set up by the strong wind or small animals.
As for apartments, as a rule the development projects have surveillance cameras in the common areas. Keys to the common door are very often incompiable which means that you can’t make any copies. That ensures that strangers won’t get access to your home.