Most burglars don’t break into the house they watch. They break into the house they studied. This guide to CCTV installation is about making sure you can see that happening. They break into the house they studied. And the only way to know a house has been studied is to watch it yourself.
But here’s the uncomfortable truth most homeowners in Nigeria won’t admit: most of the CCTV cameras installed today are close to useless. Not because the hardware is bad — because nobody planned where they should go. You end up with four cameras covering the same front gate, and total blindness at the back door where the actual break-in happens.
Start With an Assessment, Not a Camera
Before buying a single camera, walk your property and ask one question of every corner: “If I were a thief, would this camera stop me, record me, or identify me?”
A camera that records nothing useful is a decoration. A camera that captures a clear face at the point of entry is evidence. A camera facing a door at chest height gives you a blurred shoulder at 2am.
A proper home security assessment maps three things: your entry points (doors, windows, gates, compound walls, roof access), your blind spots, and your lighting conditions at the exact hours an intruder would use them — which is almost never when you’re standing there with the lights on.
The Three Camera Tiers
Not every camera needs to be the same. Matching the type to the job is the difference between a system that works and an expensive pile of hardware.
| Camera type | Best for | Strength | Weakness |
|---|---|---|---|
| Dome | Corridors, living rooms, above the main door | 360° view, hard to tamper with | Weak at one distant specific point |
| Bullet | Gates, side alleys, car parks | Long lens, visible deterrent | Fixed direction, needs mounting space |
| PTZ | Large compounds, main gates | One camera covers a wide area, zooms to a face | Costlier, slower to review, blind while moving |
1. Dome cameras — ceiling or eave mounted, 360° view, and hard to knock over or grab. Ideal for corridors, living rooms, and the space above your main door. Their weakness is a long lens reaching a specific point; pair them with a bullet camera for that.
2. Bullet cameras — the workhorse. Long, visible, and excellent at locking onto a specific target: a gate, a side alley, a car park. The visible barrel itself is a deterrent; most intruders will move to the next compound rather than push past a camera pointing directly at them.
3. PTZ (pan-tilt-zoom) cameras — one camera that can watch a wide compound and zoom into a face on command. Use them for large compounds and gates, not for the room your children sleep in; a fixed wide-angle is cheaper and better there.
Five Rules That Decide Whether Your System Works
1. Height beats range. Mount bullet cameras roughly 2.5 to 3 metres up. Lower and a mask defeats them; higher and you get the top of a head and a lot of sky.
2. Look at the light before the lens. A 4MP camera pointed at a wall at dusk is a 0MP camera. Check the actual night performance with the IR cut, and mount a light where a face will be lit, not where the whole compound is flooded.
3. Record locally, not just to the cloud. Cloud-only means a thief with a ladder and an hour of patience deletes everything. An NVR or a local microSD card means the footage survives the incident.
4. Get the footage off the CCTV network. A camera with a default password on your home Wi-Fi is a camera streaming into a stranger’s living room. Change every default password, and put the cameras on a separate network from the devices your family uses every day.
5. Check the footage weekly, not once after installation. The most common failure isn’t a broken camera — it’s a camera quietly pointed at a wall for two years because it was knocked and nobody noticed. Five minutes a month reviewing a clip solves that entirely.
What a Professional Assessment Actually Changes
Guessing your layout is how people end up with eleven cameras and no coverage. A real assessment gives you a map: which entry point gets which camera type, at what height, with what lighting, storing where, and for how long.
It also tells you the truth about budget. Most compounds don’t need more cameras — they need better-placed cameras, one good recorder, and lighting on two gates. That’s frequently half the cost of the setup people actually buy.
Frequently Asked Questions
How many CCTV cameras does a Nigerian house need?
Most compounds need three to five, placed by entry point rather than by quantity. Two covering the same front gate and nothing at the back door is the classic mistake. Walk the property and count entry points first.
What height should I mount security cameras?
Mount bullet cameras about 2.5 to 3 metres above ground. Any lower and a mask defeats them; any higher and you record the top of a head and a lot of sky.
Do I need night vision for CCTV in Nigeria?
Yes, and you need to check real low-light performance rather than trusting a resolution number. Look for infrared or colour night vision, and mount a light where a face will actually be lit — flooding the whole compound usually produces glare and worse results.
Should CCTV footage go to the cloud or a local recorder?
Local. Cloud-only storage means someone with time and access can delete the footage. An NVR or a microSD card in a locked location survives the incident, which is the only reason to have recorded at all.
Are CCTV cameras safe from hacking?
They are network devices, and factory default passwords are the usual way they are compromised. Change every default password, update firmware, and place cameras on a separate network from the devices your family uses daily. Our guide to inverter and smart device security covers the same principles in more depth.
Visible, for almost every exterior position. The camera itself is a deterrent, and most intruders will choose the neighbouring compound. Reserve hidden cameras for the one position where you need footage without tipping anyone off.
How long should CCTV footage be kept?
At least 30 days, and longer if a dispute is likely. On an eight-camera system that is substantial storage, so plan the recorder size before buying cameras rather than after. Check your local retention requirement as well, since some estates and landlords specify a minimum.
CCTV Installation: Getting the Placement Right
The detail that follows matters more than it sounds, because it is the part most systems get wrong.
Sources and Further Reading
A short primer on the technology if you want to understand what the different camera types are actually doing. the fundamentals of closed-circuit television.
How much does a CCTV installation cost in Nigeria?
It depends entirely on how many cameras, the camera type, and whether you need local recording. A small two-camera setup with a recorder and installation is a fraction of the cost of a six-camera system with PTZ units. The single biggest cost error is buying more cameras than the property needs, so get the assessment first.
Do I need a DVR or NVR as part of a CCTV installation?
You need some form of recording, and this is the part most cheap CCTV installation quotes skip. A modern camera that streams to an app and stores nothing locally is only useful while the internet is up. An NVR or a microSD card keeps the footage on your premises, which is the only reason to have recorded it at all.
Can I do a CCTV installation myself, or do I need a professional?
Mounting the cameras and running cable is within reach of a competent DIYer. The parts worth paying for are the placement assessment, the cable run, weatherproofing every entry point, and the recorder configuration. If you get placement wrong, no amount of camera quality will rescue the footage.
How long does a CCTV installation take?
A straightforward two-camera home system is usually a single day. Larger compounds with PTZ cameras, longer cable runs, and multiple entry points take longer, and trenching or roof work can add a day or two. Ask for a timeline in writing before work starts.
Key Takeaways for a CCTV Installation
- Assess the property before buying cameras: map entry points, blind spots and night lighting first.
- Match camera type to position. Dome for overhead coverage, bullet for a specific target, PTZ for a large compound.
- Record locally on an NVR or microSD card. Cloud-only storage means footage can be deleted before you need it.
- Mount bullet cameras 2.5 to 3 metres up. Lower and a mask defeats them; higher and you record sky.
- Change every default camera password and isolate cameras on a separate network.
- Review the footage weekly. A camera quietly aimed at a wall for two years is the most common failure.
What is the most common CCTV installation mistake?
Covering one area repeatedly. Four cameras watching the same front gate while the back door and side alley are blind is the classic error, and it is entirely a planning failure rather than an equipment one.
What To Do Next
Book a free home security assessment with our team. We’ll walk your compound with you, mark every blind spot, and give you a camera layout with exact camera types, positions, and heights — plus an honest number for what it actually costs. No obligation, and we’ll tell you if your current setup is already good enough.
Book My Free Security Assessment
Because the truth is simple: a camera is not security on its own — it’s a security system that was planned, installed properly, and still running six months later.
That’s the difference we build.
Read Next
- Securing Smart Inverters and Monitoring Accounts — your other networked devices, and the defaults that leave them open.
- Installation Wiring, Protection and Safety — the same discipline applied to a solar system’s cabling and protection.
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