No matter what you do to a property, there will always be weaknesses which can be exploited to gain access, but the priority for every home owner should be to improve security in the first point of call for any burglar; the door:
Secure doors aren’t a new invention, but they are reinvented all of the time, adding additional layers of security all the time. Recently, the trend finding its way into the designs of secure doors are ones which add additional layers of materials layered on top of each other. The purpose of this is to distribute the force of any attempted break-in among the many different layers, which would include ones which are very flexible and other which are very strong.
In addition to making the actual door secure, secure doors will also include more complex locking mechanisms to make picking them considerable more difficult. Some even do away with manual locks completely and requiring a digital key instead.