Security — Pricing Guide
Alarm System Installation Cost UK
Realistic pricing for home and commercial alarm systems. From basic burglar alarms at £350–£600 to fully monitored commercial systems at £2,000–£5,000+.
How Much Does an Alarm System Cost in the UK?
Alarm system prices vary depending on property size, system type, and features. Here are realistic UK price ranges for fully installed systems, including all equipment and labour.
Basic Home Alarm
£350–£600Wired or wireless bell-only system with 2–4 sensors, a keypad, and an external siren. Ideal for smaller homes needing a visible deterrent.
Typical Home Alarm
£600–£1,200Wireless system with 4–8 sensors, internal and external sirens, keypad, and optional smartphone alerts. Suits most 3–4 bedroom homes.
Smart Alarm System
£1,000–£2,000App-controlled system with real-time notifications, smart home integration, HD verification cameras, and remote arming. Popular with tech-savvy homeowners.
Commercial Intruder Alarm
£2,000–£5,000+Zoned, graded system for offices, warehouses, and retail. Includes multiple detection zones, 24/7 monitoring options, and compliance with insurance requirements.
All prices include supply, installation, testing, and handover. VAT may apply to commercial installations.
Example Alarm Installation Pricing
Every property is different. These examples give you a realistic idea of what to expect for common alarm installations in the South East.
Basic Residential Alarm
A 3-bedroom semi-detached home in Horsham. Wireless bell-only system with 3 door contacts, 1 PIR sensor, keypad, and external siren.
- ✓3 door contacts
- ✓1 PIR motion sensor
- ✓External siren
- ✓Keypad entry
Smart Home Alarm with App Control
A 4-bedroom detached home in Crawley. Wireless smart system with 5 door contacts, 3 PIR sensors, smartphone app, and real-time push notifications.
- ✓5 door contacts
- ✓3 PIR sensors
- ✓Smartphone app control
- ✓Push notifications
- ✓Internal & external sirens
Commercial Alarm System
A medium-sized warehouse in Worthing. Graded wired system with 12 detection zones, multiple keypads, 24/7 monitoring connection, and insurance-compliant specification.
- ✓12 detection zones
- ✓Multiple keypads
- ✓24/7 monitoring ready
- ✓Insurance compliant
- ✓Zoned access control integration
What Affects Alarm Installation Cost?
No two properties are the same. These are the main factors that determine the final price of your alarm system.
Number of Sensors
More doors and rooms means more contacts and PIR sensors. A 2-bed flat may need 3–4 sensors; a large detached home could need 10+.
Wired vs Wireless
Wireless systems are faster to install and cost less in labour. Wired systems are more reliable long-term and suit new builds or renovations where cables can be hidden.
App Control & Smart Features
Smartphone notifications, remote arming, and smart home integration add £200–£500 to the system cost but give you full control from anywhere.
Sirens & Keypads
Most systems include one external siren and keypad. Larger properties or multiple entry points may need additional units.
Monitoring Requirements
Self-monitored systems (app alerts) are included in the install price. 24/7 professional monitoring from an ARC adds an ongoing monthly fee, typically £20–£40/month.
Commercial Zoning
Commercial systems require multiple detection zones, graded equipment, and compliance with insurance and BS EN standards — all of which increase cost.
Installation Complexity
Listed buildings, solid walls, long cable runs, or difficult access points increase installation time and cost. A site survey identifies these before quoting.
What's Included in the Price
Our alarm installation quotes are fully inclusive. No hidden extras, no surprise charges.
Site Survey
We assess your property, identify vulnerable entry points, and recommend the right system.
Alarm Panel
The brain of your system — controls all sensors, sirens, and communication.
Door & Window Sensors
Magnetic contacts fitted to all vulnerable doors and accessible windows.
PIR Motion Sensors
Infrared detectors covering key internal areas, pet-friendly options available.
External Siren
Visible deterrent with audible alarm and flashing strobe.
Professional Installation
Fitted by NICEIC-approved engineers to manufacturer and British Standards.
System Setup & Programming
Zones configured, user codes set, and app connected if applicable.
Full Testing & Handover
Every sensor tested, system demonstrated, and user guide provided.
Wired vs Wireless Alarm Systems
Both wired and wireless alarms are effective. The right choice depends on your property, budget, and how the system will be used.
Wired Alarm Systems
- ✓Extremely reliable — no batteries to replace
- ✓Harder to tamper with or jam
- ✓Ideal for new builds and major renovations
- —Higher installation cost due to cabling
- —More disruptive to install in finished properties
Wireless Alarm Systems
- ✓Quick, clean installation — no drilling through walls
- ✓Easy to expand or relocate sensors
- ✓Lower upfront cost in most cases
- —Batteries need replacing every 2–5 years
- —Signal range can be affected by thick walls
Not sure which is right for your property? We'll recommend the best option during your free site survey.
How to Get an Accurate Quote
Online estimates can only go so far. Every property has different entry points, construction types, and security risks. That's why we always carry out a free site survey before quoting.
1. Book a Free Survey
We visit your property, assess vulnerable areas, and discuss your requirements — no obligation, no pressure.
2. Receive a Fixed Quote
You get a clear, itemised quote with no hidden costs. The price we quote is the price you pay.
3. Professional Installation
Our NICEIC-approved engineers install, test, and hand over your system — typically within 1–2 days for residential properties.
Book your free survey or call us on 01798 263333.
Frequently Asked Questions
Get a Free Alarm System Quote
Book a free site survey and receive a clear, fixed-price quote for your alarm installation. No hidden costs, no obligation.