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29 June 2021

Burglar alarm and installation costs

Discover the average price of a burglar alarm system, maintenance and monitoring contracts, and how you could save on your alarm and installation.
Liz Ransome-Croker

Which? members can log in to unlock this page and find out what you should be paying for a burglar alarm and installation. If you're not yet a member, you can join Which? to get instant access.

As well as average prices, we present our tips about burglar alarms, including what to look out for, what not to compromise on, and how to get the best price. 

We've found that the advice given by installers varies greatly, and so do the charges they apply for useful extras. Plus, we'll explain whether a burglar alarm is worth installing to get a discount on your home insurance.

By logging in you will also gain access to our best burglar alarms guide, which gives customer scores to seven burglar alarm brands, including ADT, Yale, and Honeywell alarms, as well as local independent companies.

We've rated two types of burglar alarms. The first are monitored by the company and you pay an annual or monthly fee for this service. The company will then call you or alert the police if the burglar alarm goes off.

The second type are bells-only or those that auto-dial you if there's a break-in. These don't come with a contract and can often be bought from DIY shops.