Start with the view
Identify the details that matter: a face at the front door, activity along a side path or vehicles entering a driveway. A broad overview and a close identification view often need different camera positions.
Plan the installation
Roof access, wall construction and the location of power and network equipment influence the cable route. In double-storey buildings, access between floors may be restricted. External conduit may be required.
Finish with a usable system
Your quote should specify camera models, recorder capacity, storage and setup. At handover, ask to check live view, playback, exports and remote access on your own devices.