Small House
Here's how a surveillance camera system for a smaller home would look: (assume a house that is less than 50 foot across).
Goals: The goal of this surveillance system is to guard the front of the house and the passageways to the back yard.
A camera on either side of the house prevents unauthorized access to the back of the yard, as well as the side entrances to the house. In this scenario the home owner has five separate entrances, which gives an intruder more options to enter.