CCTV for construction sites: wired and 4G cameras

The best CCTV for a construction site depends less on the camera than on what the site gives you: wired PoE cameras recording to an NVR suit sites with mains power and a network connection, while 4G, solar or battery-powered units suit sites with neither. Rural sites such as farm CCTV setups often face the same power and connectivity limits.

Whichever you choose, cameras only deter and record, and nobody responds to what they see unless you arrange that separately, through your own monitoring, keyholder or police-reporting process. Pick the setup that fits your power and connectivity first, then work out who acts on an alert.

Which CCTV is best for a construction site?

No single camera is best for every site; the power and connectivity you have on site decide which setup works.

Setup	Suits	Trade-off	Evidence
Mains available	Wired PoE cameras recorded to an NVR, where cabling can be routed and protected	Cable runs, and the risk of cable damage as the site changes	General practice; confirm against the camera and NVR datasheets
No mains or network	Wireless, solar or 4G units	Coverage depends on the unit's own power and signal, so check the datasheet	Milesight claims its units need no trenching, fixed power or network; Spot AI claims wall, pole or trailer mounting with no cabling (both manufacturer claims)
Mobile tower or trailer	Short-term work and layouts that keep changing, because the unit can be repositioned	The camera only covers where the tower stands, and someone has to move it	Tower suppliers describe them as repositionable, independent of mains and available on short hire
Mixed	Mains at the site cabin, none at the far perimeter	Two systems to view and maintain	General practice

If you can run mains, wired PoE is the more straightforward recording setup; if you can't, choose the unit built to run without it. A mixed approach can suit larger sites, with PoE cameras near the cabin and standalone units at the outer corners.

Wired kit is what we sell: cameras, NVRs, PoE switches and cable, with fitting left to your own electrician or installer. Browse the range at https://clearsecurity.co.uk or ask for a suggested system.

What makes a camera rugged and weatherproof enough for a building site?

Choose an IP66-or-better camera with an IK08–IK10 housing, a datasheet low-temperature rating, and total PoE draw inside the switch budget. Those thresholds are my guidance for site exposure, not a legal minimum, and every camera figure below is case- and model-dependent until you read the specific datasheet.

Pelco's construction page lists dome, bullet, rugged PTZ and explosion-proof devices. The housing style is your choice, so pick it for the mounting position first and then check the numbers.

Ingress and impact

• IP rating (BS EN 60529 / IEC 60529): the first digit covers dust, and 6 means dust-tight. The second covers water: 5 is water jets, 6 is powerful jets and 7 is temporary immersion. Each is tested separately, so IP67 does not automatically cover jets. Check the digits rather than the headline.
• IK rating (BS EN 62262): runs from IK00 to IK10, where IK08 is a 5 joule impact and IK10 is 20 joules. Mounting height protects a camera as much as the rating does.

Night and low light

Quoted IR range is a manufacturer's maximum, and dust, rain or a nearby hoarding can bounce infrared back into the lens. A larger sensor gathers more light at the same resolution. Lux figures from different makers may not be measured the same way, so compare them on datasheets, not on box claims.

Cold and condensation

Read the datasheet's low-end operating temperature, because an IP rating says nothing about moisture forming inside the housing. Seal the cable entry and leave a drip loop. Heated models draw more power, so use their maximum draw in the sum below.

PoE budget

Total the maximum draw of every camera and keep it under the switch's PoE budget.

Σ (maximum draw per camera, W) ≤ switch total PoE budget (W)

Take each figure from the datasheet, including IR, heater or PTZ loads, and leave headroom for later additions. Separately, each port has its own limit: 802.3af delivers up to 15.4 W and 802.3at up to 30 W at the switch. Distance limits are covered in our Cat5e and Cat6 articles.

How do you stop equipment theft rather than just record it?

Visible deterrence at gates, compounds and storage containers can cut the chance of theft, but no camera guarantees it. Detection-triggered lighting, two-way audio and sirens challenge intruders live, whereas recording alone only helps after the loss has occurred. For a wider look at what these systems actually do after an alert, see what do ANPR cameras do in the UK.

Deterrence works at the gate, the compound and the storage containers; recording alone only helps after the loss has happened. Milesight says recovery of stolen construction goods is often under 25%. That is a vendor figure quoted for US-dollar losses, not a verified UK statistic, but it still suggests footage is a poor substitute for stopping the van leaving.

Where to put cameras first

• Entry and exit points: capture every vehicle and person leaving, at a height where faces and plates are readable.
• Plant and materials stores: cover container doors and lay-down areas directly, not just the general yard.
• Fuel: tanks and bowsers are an easy target and need their own view.
• Blind spots behind hoarding: walk the perimeter from outside and cover any stretch the main cameras cannot see.

Active deterrents

Detection-triggered lighting tells an intruder they have been seen. Two-way audio and sirens go further by letting an operator challenge them live. Spot AI and Milesight both describe their construction offerings around theft prevention, but those are manufacturer claims, not proven outcomes. Check the datasheet for the specific model.

Shutdowns and weekends

Empty periods are among the highest-risk times, so set detection and alerts to be most sensitive when nobody is on site. That means weekends and any extended shutdown, such as the Christmas break. Restaurants with quiet trading days face the same risk, so see our restaurant CCTV guide for placement.

The honest limitation

Wind, wildlife and workers all trigger false alarms. Unmonitored cameras alert you but do not send anyone, so someone must verify alerts and decide who responds.

Finally, clear CCTV signs reinforce the deterrent and are expected under the ICO's CCTV guidance.

Can CCTV double as time-lapse, progress and dispute evidence?

CCTV can help settle disputes and track progress with time-stamped footage showing when damage occurred. Time-lapse is a separate product; continuous CCTV recording alone does not produce time-lapse film.

Yes for disputes and progress checks, but not for time-lapse: continuous CCTV recording and a time-lapse camera are different products. Time-stamped footage can help establish who damaged what and when, though it does not guarantee a particular outcome.

Dispute and back-charge evidence

Vendors describe this use directly. Spot AI says time-stamped clips show when an issue occurred, so you can back-charge subcontractors for site damage. Pelco lists time-stamped evidence for reconstructing incidents and for supporting insurance submissions. These are vendor-described uses, not guaranteed outcomes.

Time-lapse is a separate product

This is general guidance rather than a datasheet claim. Dedicated time-lapse cameras are a separate product category, and an NVR recording alone doesn't produce a time-lapse film. If you need one, specify it as its own requirement.

Sizing storage for retention

Use this formula, and don't trust a rule-of-thumb total:

TB = (bitrate in Mbps × 86,400 ÷ 8 ÷ 1,000,000) × number of cameras × retention days

It assumes continuous recording, so motion-triggered recording will need less. Take the bitrate from each camera's stream settings, then check the result against the hard drive range.

Retention is also a data protection decision. Under UK GDPR you should be able to justify how long you keep footage, so see our CCTV Law article before settling on a figure.

What do UK law, HSE and insurers expect?

CDM 2015 puts duties on site safety and controlling access, UK GDPR governs the footage, and insurers set their own conditions.

HSE and CDM 2015

On HSE requirements for construction site security, CDM 2015 is about managing site safety and keeping unauthorised people out, rather than prescribing particular cameras. That is general guidance, not a quoted rule, so check the wording against HSE's own CDM pages for your role on the project.

UK GDPR and the ICO CCTV code

• Workers and passers-by are both data subjects, so recorded footage of them is personal data.
• Signage is required where cameras operate.
• Privacy masking should cover neighbouring properties and public spaces within the field of view.

Our CCTV law (UK) and CCTV signage guides cover the detail, so it isn't repeated here.

Insurance and ROI

Insurers set their own conditions, and they differ between policies. Ask your insurer what they require before buying, and get it in writing. I'm giving no UK premium-reduction percentage or UK recovery rate. The only figures available, including the recovery figure quoted earlier, come from vendors and are not UK-verified, so treat them as indicative only.

You can still frame ROI with your own numbers:

Net benefit per year = (incidents per year × average cost per incident × share you expect to deter or recover) − (kit cost ÷ number of sites it will be reused on + running costs)

Take incident history and policy excess from your own claims records. Take kit cost from the live basket price, which includes VAT. Footage also has a value of its own: Pelco lists time-stamped evidence for disputed claims and insurance submissions among its job-site uses.

Related products

Related products from our own range:

• VIPER PRO 5MP 3K ColorVu Camera - 24-Hour Smart Light — VIPER PRO 5MP 3K ColorVu camera with 24-hour smart light for full-colour CCTV footage in low light. Prices include VAT. Free UK delivery over £100.
• Tiandy TC-C320N 2MP PoE IP Turret Camera, 2.8mm, IR 30m — 2MP 1080P PoE turret camera with a 2.8mm lens, 30m infrared night vision and a built-in microphone. Prices include VAT. Free UK delivery over £100.
• Hilook THC-T240-M-R 4MP Turret Camera, 40 m IR — 4 MP Turbo HD turret camera with 40 metres infrared night vision, IP66 housing and switchable video output. Prices include VAT. Free UK delivery over £100.
• Hilook 3 MP Fixed Mini Bullet Camera — The HiLook THC-B230-R is a compact 3MP Turbo HD bullet camera for home and business CCTV installations. Its bullet design makes it suitable for monitoring entrances, corridors and other areas where a