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Fire alarm installation cost

Fire alarms provide an important safety function in homes and commercial spaces. In this fire alarm installation cost guide, we’ve put together the average UK prices for installing a fire alarm system.

Not only is it important to have a fire alarm system in your home or commercial space, it’s equally important to make sure that it’s kept up-to-date.

We spoke to the online estimators at My Build Estimate – a professional estimating company monitored by the Royal Institute of Chartered Surveyors (RICS). They’ve provided us with their estimated average prices for fire alarm system installations in the UK.

How much does fire alarm installation cost?

Fire alarm installation costsRange - LowRange - HighAverage
Battery-powered fire alarms£25£75£50
Wired fire alarms£150£250£200
App-enabled fire alarms£175£300£250
Grade A fire alarm system£1,750£3,000£2,500
Commercial fire alarm system (8 zones, 20 detectors)£3,000£6,000£4,000
Magnetic door release system£175£250£200
Manual call points / Break glass£100£200£150
The main factors affecting the cost of a fire alarm system and installation in the UK include:

  • Size of the home or business
  • Complexity of the alarm system
  • The type of connection
  • Time it takes to install

An average domestic fire alarm system installation will cost between £50-£250.

The prices shown in this guide don’t cover:

  • making good of walls or ceilings for cabled system
  • trunking and containment for surface mounted cabled systems
  • multiple units (in average UK homes you may often need two or three units)

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Different types of fire alarm system

Nowadays there’s a range of fire alarm systems available at different prices and with varying features.


Average battery-powered fire alarm system installation cost: £50

These are the most popular fire alarm systems for homeowners – commonly know as ‘smoke detectors’. They’re very easy to install and the cheapest option for your home.

You can connect different battery-powered detectors together so that when one is activated it will set off then others in a ‘daisy chain’ effect. This is particularly recommended in larger properties to ensure maximum safety.

The major downside of battery-powered fire alarm systems is that they’re completely dependent on the battery. If the battery dies then the system stops working, so it’s crucial to test them regularly.

Fire alarm installation cost guide

Wired smoke alarms

Average wired fire alarm system installation cost: £200

A wired smoke alarm is a more robust system than the battery-powered option, as it is powered by the main electricity but also features a back-up battery power supply.

Similar to battery-powered alarms, they can also be connected together to all sound when one of the detectors is activated.

App-enabled smoke alarm systems

Average app-enable fire alarm system installation cost: £250

The most modern version of a smoke alarm, this system will send a message straight to your phone so you’re immediately aware of a detector being activated.

Through the app you can also turn the alarm off if you know it’s not a real fire or serious incident. And if you’re a real tech fan you can even connect the smoke alarm to a home camera system, such as Nest, for ultimate peace of mind.

Grade A fire alarm system cost

Average cost of a grade A fire alarm system: £2,500

In 2019, British standard revised the fire alarm grading system and recommendations for fire alarm systems in domestic homes. Grade A is the most comprehensive type of fire alarm system available.

Grade A fire alarm systems have separate detectors, sounders and a central control with indicating equipment and a back-up power supply, e.g. battery back-up.

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Commercial fire alarm system costs

Commercial fire alarm systems by their nature are more complex and expensive systems to install. They generally cover much larger spaces and involve more zones than a domestic fire alarm system, as such the prices will often vary considerably.

An average commercial fire alarm system installation will cost around £4,000 for materials and labour, which includes 8 zones and 20 detectors.

Other elements that you might need to consider are:

  • Magnetic door release and door holding devices – £200 (materials and labour)
  • Manual call points / break glass points – £150 each

Do I need to install a fire alarm system?

Fire alarm installation cost

If you’re responsible for a business property then you are required by law to have a fully functioning fire alarm system in place. Also, if you’re a landlord then you are also required to have a smoke detector system in place.

For your own home it’s not a legal requirement to have a fire alarm system, but it is strongly recommended for the safety of you and your family.

A fire alarm is invaluable as it:

  • Provides early warning of a potential fire
  • Gives occupants of a building time to escape in the event of a fire
  • Can reduce the extent of fire damage through early warning, in the event of a fire

How long does it take to install a fire alarm system?

The time it takes to install your fire alarm system will depend on the type of system you choose, as some are much more complex than others.

On average it can range from 2 hours to more than one day.

Can I install my own fire alarm system?

If you’re installing a battery-powered alarm system then you should be able to easily and quickly do the job yourself. However, more complex fire alarm system installations require experience with electrical projects and are often best left to the professionals.

For any of the wired alarm systems, we would recommend hiring a local fire alarm expert to carry out the installation. That way you know it’s installed safely and securely.

Find a fire alarm expert near you

Useful fire alarm installation checklist

  • Speak with local fire alarm system experts to get professional advice on which system is best suited for your home or commercial space.
  • If installing the alarm system yourself, always follow the manufacturer’s instructions.
  • For complex fire alarm systems, hire a professional to carry out the installation.
  • When hiring a local fire alarm expert, choose a tradesperson with experience and appropriate qualifications/accreditations.
  • Shop around for fair and competitive prices for your fire alarm system installation.

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