Help with security system for 2.5 storey terrace

[quarkz 2]

Hi,

My cousin is asking me for help regarding the installation of security system for her 2.5 storey terrace. Her electrician recommend a company doing CCTV and security system.

They recommended 7 CCTV cameras (HikVision, UniFi) with NVR video recorder with 14TB HDD. Total cost between $3500 to $5500.

I have some experiences in installing internet cctv for my hdb home and  father's shop and hence she asked me. I remember setting up 4 cameras and it records 24/7 using a computer. Cost is only a few hundreds using an old PC which is already there. But I have no experience in the installation of security system for her 2.5 storey terrace.

I thought that nowaday with so many internet cctv, it should be quite simple and cheap. I wonder if the recommended setup is an overkill for a terrace, or is this quite standard?

Can someone advise?

Thanks!