How is home CCTV installed?

Whether wired or wireless, a CCTV install follows the same broad stages — only the cabling step differs in length. This is a general overview of the UK process.

Survey and planning

Every good install starts with a survey, even a brief one. The installer walks the property to decide where the cameras go, and this is the most important decision of the whole job — it determines whether the footage is useful. Cameras are positioned to cover the weak points: the front door, the rear and side approaches, the driveway, and any vulnerable windows or outbuildings. The installer considers the field of view each camera will give, the lighting at different times of day (avoiding pointing into the sun or a bright window that washes out the image), and the mounting height — high enough to be out of reach, low enough to capture faces rather than the tops of heads.

Alongside camera positions, the survey plans the cable routes and the recorder location. The recorder needs to sit somewhere central, secure and ventilated, ideally out of sight so it can't be stolen along with the footage — a cupboard, loft or utility area is common. The installer works out how each cable will run from camera to recorder with the least disruption, identifying loft access, cavity routes and where holes will be needed. For a wireless system, the survey instead checks the Wi-Fi signal strength at each camera position, since a weak signal there will undermine the whole system.

This planning stage is what separates a good install from a poor one. A system designed at survey gives overlapping, non-conflicting coverage with no blind spots, cameras angled to capture what matters, and a tidy cable plan. A system slapped up without it tends to have gaps, glare, or cameras recording the wrong things. The time spent planning is part of the value, not an overhead, and it's why a professional install is worth more than the cost of the parts.

Mounting, cabling and the recorder

With the plan set, the installer mounts the cameras at the agreed points, fixing the brackets securely to the wall or soffit and aiming each camera to give the planned view. Weatherproofing matters here — outdoor cameras and their cable entries are sealed against rain, and connections are protected so they don't corrode. The cameras are angled and focused, and on systems with motorised lenses the zoom is set to frame the scene correctly.

Then comes the defining step of a wired install: running the cabling. Each camera connects back to the recorder by cable — coaxial for analogue/HD systems, or network cable for IP systems, which can also carry power over the same cable (Power over Ethernet). The installer routes these cables as invisibly as possible, threading them through the loft, down cavities, under floors and along existing service routes, drilling neat entry points and making good afterwards. This is the most time-consuming and skilled part of the job. For a wireless system, this step is replaced by pairing each camera to the hub and ensuring it has power — far quicker, with little or no structural work.

The cables (or wireless signals) all lead to the recorder — a DVR for analogue systems or an NVR for IP systems — which is fitted at its central location and fitted with a surveillance-grade hard drive sized for the desired retention. The recorder is connected to power and, usually, to the home network so footage can be viewed remotely. With every camera connected and the recorder in place, the physical install is complete and the system is ready to be brought to life through configuration.

Configuration, testing and handover

Hardware on the wall isn't a working CCTV system until it's configured. The installer sets the recording schedule — continuous, motion-triggered, or a mix — and draws motion zones so each camera alerts on the areas that matter (a doorway, a path) rather than every passing car or swaying tree. They name each camera, set the correct time and date stamp (vital for footage to be useful as evidence), and on capable systems enable analytics such as person or vehicle detection to cut false alerts. Then they set up remote viewing, linking the recorder to your phone app so you can see live and recorded footage from anywhere.

Next is testing. The installer checks every camera is recording and storing to the drive, confirms the night vision works after dark or in simulated low light, walks the coverage to check for blind spots, and verifies the app shows both live and playback views correctly. This is the stage that catches a camera that's slightly misaimed, a motion zone that's too sensitive, or a connection that's intermittent — far better found now than after an incident.

Finally, the handover. A good installer shows you how to use the system: viewing live footage, playing back recordings, exporting a clip if you ever need to give footage to the police, and what to do if a camera drops offline. They'll explain the retention — how many days of footage the drive holds before overwriting — and any maintenance, like cleaning lenses. This is also when a professional installer will mention the legal side: if any camera captures beyond your boundary (a neighbour's garden or the public pavement), the ICO's domestic CCTV guidance applies. With the handover done, the system is yours to use, set up to give clean, usable footage of the points that matter.

Frequently asked questions

Sources & further reading

• ICO — guidance on domestic CCTV and home security cameras
• Checkatrade — CCTV installation cost guide

Figures on this page are typical UK ranges drawn from published sources and depend on your specific property and system. They are guidance, not a quotation.