
An exterior door should have a solid construction made of a solid wood core or steel. It is much easier to break through a lightweight, hollow-core wooden door. You also want to check the condition of the door and ensure there is no cracking, warping, or rotting.
Door locks should be a good quality deadbolt lock. While chains could be used in addition to the deadbolt lock, they should not be used instead of it. You may also want to think about installing a bump-resistant lock as bump keys are an easy way for intruders to enter a home. If the door has glass panes in it, be sure that the lock is positioned far from the glass so that if an intruder breaks the glass, they still cannot reach the lock.
If your front door has a mail slot in it you should have a box or cage surrounding it. The mail slot can enable burglars to unlock a door from the inside if there is no box.
Another safety measure is to have a peephole in the door. This way, the homeowner will be able to see who is at the door and decide whether they should open the door or not.
This are just a few of the features that a secure exterior door should have to keep you and your household safe inside.