How long does CCTV footage last? Learn what controls retention, from storage capacity and recording settings to legal needs for homes and businesses alike.

A missing parcel, damage to a vehicle or stock that cannot be accounted for often raises the same urgent question: how long does CCTV footage last? The answer is rarely a fixed number of days. Most systems automatically overwrite older recordings once their storage is full, so retention depends on how the system has been designed, configured and used.
For many homes and small businesses, footage is kept for around 14 to 31 days. A well-specified commercial system may retain recordings for longer, while a high-traffic system recording continuously in high resolution may overwrite footage much sooner. The right period is not simply the longest one possible. It is long enough to investigate a genuine incident, while remaining practical, lawful and affordable.
How Long Does CCTV Footage Last in Practice?
A CCTV recorder uses a hard drive or other storage device to save video. When the available space is used, it usually records over the oldest footage first. This is called loop recording or overwrite recording. Unless a clip is exported or protected, it will eventually be replaced by newer video.
As a broad guide, a domestic system with a few cameras recording on motion detection can often hold several weeks of footage. A shop, yard or office with multiple cameras running continuously may have a noticeably shorter retention period on the same-sized hard drive. The number shown by a manufacturer is only an estimate because every site creates a different amount of video data.
A practical target for many properties is 30 days, particularly where an incident may not be discovered immediately. That said, 30 days is not automatically necessary for every camera or every site. A camera covering a quiet side gate has very different recording needs from one covering a busy entrance, till area or loading bay.
What Determines CCTV Retention Time?
Storage duration comes down to the balance between the detail you need and the amount of video your system creates. Four main factors have the greatest effect:
Number of cameras: Each additional camera adds to the total amount of footage being recorded.
Resolution and image settings: Higher-resolution cameras preserve more useful detail, but create larger files. Frame rate, image quality and night-time recording also affect storage use.
Recording method: Continuous recording uses more capacity than motion detection or scheduled recording.
Hard-drive capacity and condition: A larger surveillance-grade drive retains more footage. An ageing or faulty drive can put recordings at risk regardless of its advertised size.
These factors work together. For example, a four-camera home system set to record movement may keep a month or more of video because the driveway and garden are quiet for much of the day. The same cameras facing a busy street, recording continuous video at maximum settings, could fill the drive far faster.
Continuous Recording Versus Motion Detection
Continuous recording provides a complete timeline. It can be the right choice for an entrance, business premises, vehicle yard or other area where missing even a few seconds could matter. Its trade-off is storage demand.
Motion detection records only when activity is detected. This can extend retention considerably, but it needs careful setup. Trees moving in the wind, headlights, rain, insects and passing traffic can trigger unwanted recordings. If the detection area or sensitivity is poorly configured, the system may either fill its drive with unnecessary clips or miss activity that should have been captured.
A professional installation considers what each camera is meant to achieve. It may make sense to use continuous recording at a key entrance and motion recording for a quieter perimeter area, rather than applying one setting everywhere.
Resolution Is Useful Only if Storage Supports It
It is tempting to set every camera to its highest possible resolution and frame rate. More detail can be valuable when identifying a person, vehicle or registration plate, but settings that are too demanding for the available drive shorten retention time sharply.
The better approach is to set cameras according to their role. A camera covering a front door may require clear facial detail. A wider camera used for general awareness in a large yard may not need identical settings. This gives you footage that is fit for purpose without using storage unnecessarily.
How Long Should Businesses Keep CCTV Footage?
There is no single UK rule requiring all businesses to keep CCTV footage for a set number of days. Under UK data protection law, recordings should not be kept for longer than necessary for the reason they were collected. In practical terms, a business should be able to explain its retention period and review whether it remains appropriate.
For many premises, 30 days is a sensible starting point. It gives managers time to identify a problem, check a date and secure relevant video. Some businesses may need less. Others may have a genuine reason to retain footage longer, such as a site where incidents are identified only after stock checks, where there are long periods between visits, or where insurance and operational requirements justify it.
The key is to have a clear policy. Decide who can access recordings, how footage is requested, when clips are exported and how long exported evidence is retained. Restricting access is just as important as the retention period. CCTV footage can contain personal data, and it should be handled with care.
If an incident occurs, export the relevant clip as soon as possible. Do not assume it will still be available next week. Save enough footage to show what happened before, during and after the event, and keep the original recording where possible. Make a note of the camera, date, time and person who created the export.
What Homeowners and Landlords Need to Consider
For homeowners, the priority is normally reliable evidence around entrances, driveways, garages and vulnerable boundaries. A system retaining two to four weeks of recordings is often suitable, provided it captures useful images and is checked periodically.
If your cameras record beyond your own boundary, such as a public pavement or a neighbour's property, privacy responsibilities can apply. Keep the camera view as focused as possible, use privacy masking where appropriate and make sure you can locate and export footage if you need to respond to a request.
Landlords should also think about how quickly an issue is likely to be reported. Damage in a communal area may not be noticed immediately, so a retention period of only a few days can be inadequate. On the other hand, retaining months of routine footage without a clear reason is unlikely to be proportionate.
How to Check Your Actual Retention Period
Do not rely on the original quote or a guess based on the hard-drive size. The quickest test is to log into the recorder and view the oldest available recording for each camera. Compare that date and time with the present. This shows how many days your system is actually retaining under normal use.
Check again after changes such as adding cameras, increasing image quality, changing motion settings or replacing the recorder. Retention can change without being obvious, especially after a camera is set to continuous recording or an area begins generating more movement than before.
It is also worth checking that the recorder date and time are correct. Accurate timestamps matter when footage is used to investigate a crime, deal with a dispute or support an insurance claim. A system that records for 30 days is of limited value if the time is wrong or a drive has failed without anyone noticing.
Extending CCTV Footage Storage Safely
The straightforward option is to install a larger, suitable hard drive. However, more capacity is not always the best first answer. Reviewing recording schedules, motion settings and camera quality can often create a better balance between coverage, image detail and retention.
Cloud storage can provide an additional copy of selected footage, but it usually involves ongoing costs and may be limited by upload speed, subscription terms and camera settings. It should be chosen for a clear reason, not treated as a substitute for a properly specified local recorder.
For sites across the North East, Supersurveillance can assess expected storage at the design stage and configure recording around how the property is actually used. That avoids the common problem of installing quality cameras, only to find that the evidence has already been overwritten when it is needed.
The most useful CCTV system is one you can depend on after an incident, not just one that looks impressive on installation day. Check your oldest footage now, then set a retention period that gives you a realistic opportunity to act when it matters.