[header] How to install a security camera system for a house [title] Make a diagram of your surveillance needs. [step] It is both expensive and inefficient to monitor every square inch of your house, so you need to prioritize what areas you want to watch the most. Draw up a rough diagram of your house or print out the blueprints and note where you might want to place cameras. 
When you are done, check out each location to make sure it is not blocked by anything and provides the best view possible. You may want cameras for : [substeps] Front and back doors.