Home security technology has changed dramatically in the past five years. What used to require a professional alarm company installing proprietary hardware and a five-year monitoring contract can now be achieved with consumer-grade kit that you configure yourself, with no contract and no ongoing fees. The options range from simple battery-powered cameras to sophisticated professionally installed and monitored systems. Understanding what you actually need helps you avoid both under-investing (a dummy camera box on the corner of the house) and over-investing (an industrial-grade system for a suburban terraced house).
Deterrence vs. Detection
Most residential security is about deterrence: persuading a would-be intruder that your property is not a good target compared to the one next door. Visible cameras, alarm boxes, and good outdoor lighting are all deterrents. They don't prevent a determined professional burglar, but most domestic burglaries are opportunistic and respond well to visible deterrence.
Detection is different: it's about knowing when something has happened. Alarm systems detect entry and either alert you, alert a monitoring centre, or both. CCTV records events for review. The combination of deterrence (make the attempt seem risky) and detection (make the aftermath more likely to lead to identification and recovery) is the basis of effective domestic security.
Alarm Systems
Professionally installed and monitored alarms from NSI or SSAIB-approved companies (the two main professional security inspectorates in the UK) are the gold standard for residential security. They typically involve:
- Grade 2 (BS EN 50131) alarm equipment: higher quality than consumer alarms, tamper-protected, battery backup
- Monitored response: the alarm signals to a central monitoring station (ARG station), which contacts you and potentially the police
- Police response: ACPO-approved monitoring allows the alarm company to request a police response, which self-install systems generally cannot
- Annual maintenance contract and regular inspection
Cost: £800-£2,500 installation depending on property size and complexity, plus £15-£40 per month monitoring contract. Typically comes with a 3-5 year monitoring term. Insurance discounts for NSI/SSAIB-approved systems can partly offset the monitoring cost.
DIY smart alarms (Ajax, Ring, Yale Smart, Somfy One) are self-installed, self-monitored systems. They send notifications to your phone when triggered, optionally paying for a monitoring add-on. They don't typically qualify for police response through standard channels. For lower-risk properties or as a supplementary layer to other security measures, they're a reasonable and affordable option.
CCTV and Smart Cameras
Wired PoE (Power over Ethernet) cameras, connected back to a NVR (Network Video Recorder) or directly to a home server, are significantly more reliable than wireless cameras. They record continuously, don't depend on Wi-Fi, and don't rely on cloud storage subscriptions. The downside is installation complexity: cables need to be run to each camera position, which is much easier during building works.
Consumer options (Reolink, Hikvision, Dahua, Amcrest) at £80-£200 per camera provide 4K resolution, IR night vision, local and cloud storage, and mobile app access. A 4-8 camera wired system with a local NVR is a serious security setup that doesn't rely on any subscription service after initial purchase.
Wireless cameras (Ring, Arlo, Eufy) are easier to install and suitable if wiring is impractical. Battery life, Wi-Fi connectivity, and cloud storage costs are the main considerations. Most wireless systems require a monthly subscription for cloud video storage; without it, you get alerts but may not have recorded footage of what happened.
CCTV installation must comply with UK GDPR if cameras cover areas beyond your own property. Cameras that capture neighbours' gardens or public areas must be registered with the ICO, and signage must be displayed. This is straightforward but often overlooked.
Smart Access Control
Smart locks (Yale, Nuki, Yale Conexis L2, Schlage) replace or supplement standard cylinder locks with keypad codes, smartphone control, or key fob operation. They're genuinely useful for multi-person households, rental properties, and properties where you want to grant timed access (cleaners, trades) without handing out physical keys.
Install smart locks in addition to, not instead of, good quality physical security: a BS3621 deadlock or equivalent, reinforced strike plates, and door frames that are resistant to forced entry. The smart control system is a convenience layer, not the primary security mechanism.
Outdoor lighting on motion sensors is one of the most cost-effective security measures available. It costs very little, eliminates dark spots around the property that could conceal an intruder, and deters opportunistic entry in a way that no amount of electronic equipment fully replaces.
Integrating Security into Your Smart Home
Professional smart home systems (Control4, Loxone, Home Assistant) can integrate security cameras, alarm systems, and access control into a single interface. You can automate responses: lights turning on when motion is detected outside, the alarm arming automatically when the last person leaves, CCTV starting recording when the alarm is triggered.
Home Assistant in particular has strong integrations with most consumer security devices, allowing you to create rules without needing a cloud subscription for each individual device. If you're building a smart home infrastructure anyway, including security devices in the same ecosystem reduces management complexity.