Video doorbell vs a proper CCTV system: do you need both?
6 min read · Written by Mustafa Husain, Founder of SAS4HomeIT · Published August 26, 2026
A video doorbell covers one job well, the front door, alerting you the moment someone approaches and letting you see and speak to them before opening the door. It doesn't cover side gates, back doors, or the rest of the property, so for full property coverage it's a good addition to a CCTV system, not a replacement for one, and the confusion between the two is one of the more common gaps we find on new-customer security assessments.
What a video doorbell is actually good at
A doorbell camera covers one thing well: the front door. You get an alert the moment someone approaches, can speak to them remotely, and see who's there before opening the door. It's not designed to monitor a driveway, garden, side entrance, or the rest of the property, and it was never intended to, the entire product category is built around answering one specific question well: who's at my door right now.
What it doesn't cover
Anything outside the doorbell's narrow field of view is a blind spot, side gates, back doors, parked cars, and garden access are all invisible to it. This matters more than people initially assume, since a meaningful share of property incidents don't happen at the clearly visible, well-lit front door at all, they happen at the side gate or the less visible rear of the property specifically because that's less exposed.
Storage and retention differences worth knowing
Most doorbell footage also has a shorter retention window than a proper NVR-based system, and many standalone doorbells rely on cloud storage with its own subscription, separate from a home's main CCTV storage approach. If you're relying on doorbell footage for anything beyond the immediate live alert, it's worth checking specifically how long that footage is actually kept before being overwritten or deleted.
Access control is where doorbells sometimes go further than basic CCTV
Some doorbell products (particularly combined doorbell-lock devices) add smart lock functionality that standard CCTV cameras don't offer at all, letting you remotely unlock the door for a visitor or delivery. This is a genuine functional advantage specific to the doorbell category, worth factoring in if remote access control at the front door specifically is something you want.
Our honest answer
"For full property coverage, a doorbell camera is a good addition to a CCTV system, not a replacement for one. If budget only allows one right now, I'll help you decide based on which entry point actually matters most for your specific home, for many properties that's still the front door, for others with a less visible side or rear entrance, the priority may genuinely be different," says Mustafa Husain, Founder of SAS4HomeIT.
Frequently asked questions
Is a video doorbell enough for home security on its own?
No, a doorbell camera covers one job well, the front door, alerting you the moment someone approaches and letting you see and speak to them before opening the door, but it isn't designed to monitor the driveway, garden, or side entrances.
What doesn't a video doorbell cover?
Anything outside its narrow field of view is a blind spot, side gates, back doors, parked cars, and garden access are all invisible to it, and a meaningful share of property incidents happen at less visible spots like these rather than the front door.
Do I need both a doorbell camera and a CCTV system?
For full property coverage, yes, a doorbell camera is a good addition to a CCTV system, not a replacement for one. If budget only allows one, the priority should be based on which entry point actually matters most for your specific home.