Cost of Home Security System Installation in the UK (2025)
A professionally installed burglar alarm costs £400–£1,200. A 4-camera CCTV system runs £500–£1,500 installed. NSI/SSAIB-approved systems attract insurance discounts.
Burglar alarms
Professionally installed alarms can be bells-only (alarm sounds on the property), monitored (linked to an alarm receiving centre), or smart (alerts sent to your phone). Monitored systems require an annual contract but provide police response capability.
NSI and SSAIB certification
For a police-response or insurance-approved alarm, your installer must be NSI Gold or SSAIB certified. Many home insurers offer premium discounts for approved systems. Always ask about certification when requesting quotes.
Cost Breakdown
All prices are indicative UK averages for 2025. Actual costs vary by location, specification, and contractor. London and South East rates are typically 20–35% higher.
| Item | Low | High |
|---|---|---|
| Basic bells-only alarm | £300 | £600 |
| Smart alarm system | £400 | £900 |
| Monitored alarm system | £500 | £1,200 |
| Annual monitoring fee | £150 | £350 |
| Alarm servicing | £80 | £150 |
What Affects the Cost?
- ✓Type of system — bells-only, monitored, or smart
- ✓Number of sensors and detectors
- ✓Whether NSI/SSAIB certification is required
- ✓Property size and number of entry points
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Post a Job — It's FreeFrequently Asked Questions
Will a burglar alarm reduce my home insurance?
Many insurers offer discounts of 5–10% for professionally installed, NSI or SSAIB-approved alarm systems. For high-value homes, the saving can be significant. Check with your insurer before installation.
Do I need to notify anyone I have an alarm?
For monitored systems, you will register with the alarm receiving centre. Some local councils require a keyholder to be registered to reduce false alarm call-outs.