Security begins with site planning, not cameras.
Who can approach the house? Which entrances exist? What can someone see from the street, side yard, neighboring second floor, or backyard?
Front door, garage, service entrance, pool gate, and side-yard access all create security decisions.
Large windows create both views and exposure.
During the day, you see out. At night, everyone may see in.
Landscaping, fences, walls, shades, orientation, and lighting can solve many privacy problems before electronics are needed.
If you want cameras, gates, access control, doorbells, sensors, and alarms, run wiring during construction.
Privacy itself is a form of luxury.
Being able to sit in your backyard without feeling watched has real value.
Design it.