London regional pricing

How Much Does an Alarm Installer Cost in London?

Updated prices for . London prices are typically 24% above the national average.

12 services priced
London region
Updated

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Adjusts prices for: Wireless Burglar Alarm, Wired Burglar Alarm

Price summary

London Price Summary

Service Low Average High
Wireless Burglar Alarm £375 £620 £995
Wired Burglar Alarm £620 £995 £1,490
Smart Alarm System £495 £870 £1,365

Prices include labour and materials. VAT may apply. Based on London regional pricing.

Full pricing

All Alarm Installer Prices in London

With a population of 8.8 million, London is in Greater London and alarm installer costs here are 24% above the national average. Prices are based on real regional wage data from the Office for National Statistics.

All prices include materials and labour unless stated otherwise. Prices verified 2026

Wireless Burglar Alarm

Low

£375

Average

£620

High

£995

2-4 hours

More details

Supply and installation of a wireless burglar alarm for an average 3-bed house. Includes the main control box, a keypad, 2-3 sensors on doors, 2 motion detectors, and an alarm box on the outside wall.

~45% labour, ~55% materials

What affects the price

  • Number of sensors and door contacts
  • Brand (Yale, Texecom, Honeywell, Risco)
  • Whether the system includes a smartphone app
  • Property size and number of entry points

Wired Burglar Alarm

Low

£620

Average

£995

High

£1,490

1 day

More details

Supply and installation of a hardwired intruder alarm system. Includes control panel, keypad, sensors, door contacts and external sounder. More reliable than wireless but requires cable runs through the property.

~56% labour, ~44% materials

What affects the price

  • Number of zones and sensors needed
  • Cable routing complexity (surface or concealed)
  • Panel type and grade
  • Property size and construction

Smart Alarm System

Low

£495

Average

£870

High

£1,365

2-4 hours

More details

Supply and installation of a smart alarm system with app control, push notifications and integration with smart home devices. Includes hub, sensors, contacts, keypad and sounder.

~43% labour, ~57% materials

What affects the price

  • Brand (Ring Alarm, Yale Sync, ADT Smart Home)
  • Number of sensors and devices included
  • Whether professional monitoring is added
  • Integration with cameras and smart locks

Alarm Maintenance and Service

Low

£100

Average

£160

High

£250

1-2 hours

More details

Annual service of an existing intruder alarm system. Includes testing all sensors and contacts, checking sounder and battery, updating firmware and issuing a service certificate.

~88% labour, ~12% materials

What affects the price

  • Number of sensors in the system
  • Whether replacement batteries are needed
  • Age and condition of the system
  • Whether the system is NSI or SSAIB accredited

Alarm Repair

Low

£75

Average

£150

High

£310

1-2 hours

More details

Diagnosing and repairing a fault with an existing burglar alarm. Common issues include false triggers, faulty sensors, dead batteries, panel errors and sounder failures.

~58% labour, ~42% materials

What affects the price

  • Type and complexity of the fault
  • Whether replacement parts are needed
  • Age of the system and parts availability
  • Whether the system is a proprietary brand

Additional Sensor or Zone

Low

£60

Average

£110

High

£185

30-60 minutes

More details

Adding an extra motion sensor, door sensor, or vibration sensor to your existing alarm system. Includes the sensor itself, setting it up on the control panel, and testing.

~63% labour, ~37% materials

What affects the price

  • Type of sensor (PIR, door contact, vibration, glass break)
  • Whether the system is wired or wireless
  • Spare zone capacity on the control panel
  • Cable run distance for wired sensors

Fire Alarm System (Domestic)

Low

£185

Average

£310

High

£560

2-4 hours

More details

Supply and installation of an interlinked mains-powered fire alarm system for a domestic property. Typically includes smoke detectors on each floor and a heat detector in the kitchen.

~50% labour, ~50% materials

What affects the price

  • Number of detectors needed (one per floor minimum)
  • Wired or wireless interlinked system
  • Whether heat detectors are needed for kitchen/garage
  • Property size and number of storeys

Carbon Monoxide Alarm System

Low

£60

Average

£125

High

£225

30-60 minutes

More details

Supply and installation of carbon monoxide detectors near gas appliances. Legally required in all rented properties. Includes battery or mains-powered units positioned per manufacturer guidelines.

~50% labour, ~50% materials

What affects the price

  • Number of CO detectors needed
  • Battery powered vs mains wired
  • Whether interlinked with existing fire alarms
  • Number of rooms with gas appliances

Alarm Monitoring Setup

Low

£125

Average

£250

High

£435

1-2 hours

More details

Setting up your alarm to be monitored by a 24/7 security centre who will contact you (and the police if needed) when the alarm goes off. Includes fitting a device that sends the alert via phone or broadband and registering with the monitoring service.

~68% labour, ~32% materials

What affects the price

  • Type of communicator needed (GSM dialler, dual-path)
  • Monthly monitoring subscription (typically £15-£40/month)
  • Whether police response URN is included
  • Alarm panel compatibility

Key Holder Response Service

Low

£250

Average

£435

High

£745

1 hour setup

More details

Setup of a key holder response service where a security guard responds to your alarm activation. Includes initial setup, key safe installation, registration with the monitoring centre and first year response.

~93% labour, ~7% materials

What affects the price

  • Monthly or annual subscription cost (typically £25-£35/month)
  • Whether a key safe needs installing at your property
  • Response time guarantees
  • Whether combined with alarm monitoring

Safe Installation

Low

£100

Average

£185

High

£375

1-3 hours

More details

Professional installation and bolting down of a home safe. Includes fixing to the floor or wall using masonry bolts and concealment where possible. Safe not included in price.

~83% labour, ~17% materials

What affects the price

  • Size and weight of the safe
  • Floor or wall mounting
  • Floor type (concrete, timber, tile)
  • Whether the safe needs concealing in a cupboard or wall

Security Light Installation

Low

£100

Average

£185

High

£310

1-2 hours

More details

Supply and installation of a motion-sensor security light that turns on automatically when someone approaches. Includes the LED floodlight, wiring it into your electrics, and testing. Price is per light.

~65% labour, ~35% materials

What affects the price

  • Type of light (LED floodlight, twin spots, soffit light)
  • Wattage and brightness
  • Whether new wiring is needed from the consumer unit
  • Number of lights being installed

Step by step

What's Involved in Hiring an Alarm Installation

Having a burglar alarm professionally installed typically involves a home survey, system design, installation, and handover, usually completed within a single day.

1

Home security survey

The installer visits your property to assess its layout, entry points, and any existing security measures. They will check doors, windows, and vulnerable areas to determine how many sensors and contacts are needed for proper coverage.

2

System recommendation and quote

Based on the survey, the installer recommends a system type (wired, wireless, or hybrid) and provides a detailed quote. They will explain the options including brands, monitoring services, and smart features so you can make an informed decision.

3

Installation and wiring

The installer fits the control panel, sensors, door contacts, and the external sounder box. For wireless systems this takes 2-4 hours; wired systems take longer as cables need routing through the property. The installer keeps disruption to a minimum and tidies up after.

4

Programming and zone setup

Each sensor is assigned to a zone on the control panel, and entry and exit times are programmed. The installer configures settings like part-set mode (for arming downstairs while you are upstairs) and any smart app connections.

5

Testing and handover

Every sensor and contact is walk-tested to confirm it triggers correctly. The external sounder is tested, and if monitoring is included, the connection to the Alarm Receiving Centre is verified. You are shown how to arm, disarm, and manage the system day-to-day.

Regional comparison

How London Compares

Average cost of wireless burglar alarm across regions.

London
+24% £620
National Average
baseline £500

Local insights

What Affects Alarm Installer Costs in London?

London's housing stock ranges from Georgian and Victorian terraces to post-war estates and modern new-builds, with a wide mix of Victorian terraces, modern flats, high-rise apartments and new-build estates across the borough. Properties in areas like Islington, Hackney and Brixton vary enormously in age, layout and condition, all of which directly affect alarm installer costs. With a population of 8.8 million, London is one of the more expensive areas for alarm installer work in the UK. Older properties tend to need more preparation work and present access challenges that push prices toward the higher end — for example, wired burglar alarm here averages around £995.

London is the most expensive part of the UK for trade work, with labour rates running around 24% above the national average. This reflects the high cost of living, congestion charges, and expensive parking that tradespeople factor into their quotes. As a major city with a population of 8.8 million, demand for alarm installer services is consistently high, and there is no shortage of qualified alarm installer professionals across the capital. The larger population means more tradespeople operate in the area, which generally keeps pricing competitive. Prices still vary by 30-50% between tradespeople for the same job, making multiple quotes essential.

Several factors affect what you will pay for alarm installer work in London. The scope and complexity of the job is the biggest driver — straightforward work in accessible locations will be at the lower end, while anything involving older properties, difficult access, or structural complications will cost more. Material choices also make a significant difference; opting for premium brands or higher-spec products can add 20-40% to the total. As one of the more expensive areas for trade work, London residents typically pay around £620 for wireless burglar alarm and £620 to £1,490 for wired burglar alarm.

When getting quotes in London, aim for at least three from different qualified professionals. The larger population means more tradespeople operate in the area, which generally keeps pricing competitive. Ask each one to visit and assess the work in person rather than quoting over the phone. A good alarm installer will check the existing setup, identify any potential complications, and give you a detailed breakdown of costs. In a major city like London, there is plenty of choice, so do not settle for the first quote you receive. Be wary of quotes that seem significantly cheaper than others — they may be cutting corners on materials or not including everything in the price. Always check qualifications, insurance and recent reviews before hiring.

Depending on the work involved, you may also need cctv installation (£435–£870), locksmith (£75–£185), or aerial & satellite installation (£185–£375) in London.

Common questions

Frequently Asked Questions

Common questions about alarm installer costs in London.

What is the difference between a wired and wireless burglar alarm?
Wired alarms are more reliable and harder to tamper with, but require cables run through walls so installation takes longer. Wireless alarms are quicker to fit and easier to expand, but rely on batteries and can occasionally suffer signal interference.
Do burglar alarms need regular servicing?
Yes. Most alarm manufacturers recommend an annual service to check sensors, batteries and the control panel. If your alarm is monitored by an Alarm Receiving Centre (ARC), annual servicing is usually a requirement to maintain the monitoring contract.
Will a burglar alarm reduce my home insurance?
Many insurers offer a discount of 5-15% for homes with a professionally installed alarm system, especially if it is monitored. Check with your insurer first, as some require a specific grade of alarm (e.g. Grade 2 to BS EN 50131) to qualify for the discount.
What is a smart alarm system?
A smart alarm connects to your home Wi-Fi and sends alerts to your phone when triggered. You can arm, disarm and monitor the system remotely via an app. Some systems integrate with smart doorbells, cameras and voice assistants for whole-home security.
What is NSI or SSAIB accreditation and does it matter?
NSI (National Security Inspectorate) and SSAIB (Security Systems and Alarms Inspection Board) are UKAS-accredited bodies that audit alarm installers to ensure they meet British Standards. Using an NSI or SSAIB-approved installer is often required by insurers and is essential if you want police response to alarm activations.
How long does a burglar alarm installation take?
A wireless alarm for a typical 3-bed house takes 2-4 hours. A wired system takes a full day as cables need routing through walls and ceilings. Smart alarm systems sit somewhere in between. The installer should give you a clear timescale before starting.
Do I need monitored alarm or is bells-only sufficient?
A bells-only alarm relies on the siren deterring intruders and neighbours noticing. Monitored alarms send an alert to a 24/7 security centre who contact you and can dispatch police or a keyholder. Monitored systems cost £15-£40 per month on top of installation but provide significantly better protection, especially when you are away from home.
Can I keep my existing alarm and just upgrade it?
In many cases, yes. An installer can replace the control panel and add smart features while keeping existing wired sensors. However, if your system is over 10-15 years old, the sensors themselves may be unreliable and a full replacement is usually better value than patching an ageing system.
Are fire and smoke alarms a legal requirement in the UK?
In England, all rented properties must have a smoke alarm on each storey and a carbon monoxide alarm in rooms with a solid fuel appliance. Scotland requires interlinked alarms in all homes, not just rentals. Homeowners are strongly advised to fit interlinked smoke and CO alarms even where not legally required.
How much does an alarm installer cost in London in 2026?
Wireless Burglar Alarm in London typically costs between £375 and £995, with the average being around £620. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are alarm installer prices cheaper in London than London?
London is the most expensive area in the UK for alarm installer work, with prices running around 24% above the national average. You may find cheaper quotes in outer London boroughs or by comparing multiple professionals.
How do I find a good alarm installer in London?
Get at least three quotes from different tradespeople, check recent reviews, and ask whether the quote includes VAT and everything you need. A detailed written quote that breaks down all costs is a good sign. Always check qualifications, insurance and recent reviews before hiring.
What affects alarm installer prices in London?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. London rates are 24% above the national average. Getting multiple quotes is the best way to ensure a fair price.
Do alarm installer prices include materials in London?
The prices shown on this page include all typical costs. However, when getting real quotes, always confirm what is and isn't included. Some tradespeople break out costs separately, while others give an all-in price. Ask for a detailed breakdown before agreeing to any work.