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How Much Does a House Alarm System Cost?

Burglar alarm systems for home installation, fitted by a professional, range in cost depending on a number of factors. We’ll explain what everything we’ve listed here means on this page:

Type of alarm Number of sensors/contacts Number of keyfobs Supply only cost Supply and install cost Monthly fees
Bell-only wireless 2 1 £69-£250 £169-£350 none
Bell-only wired 2/1 1 Not available £400 none
Monitored wireless 2/1 1 Not available £100-£200 £15-45
Auto-dialler alarm 1/1 1 £190-£310 £290-£410 none
Smart alarm 1 0 (your smartphone acts as keyfob) £159 £259 none

Which type of burglar alarm should I choose?

When people think of burglar alarms, ADT alarms often springs to mind. They are the market leader in burglar alarms for houses and have been for years. But are they the right company offering the right system for you?

Burglar alarms have evolved a lot since they first became popular additions to people’s homes in the 1980s and 1990s. At that time, sensors were sometimes a little too sensitive, and your burglar alarm might go off in the middle of the night for no reason at all. Wireless systems had a limited range, so if you had any outhouses, sheds, or other outside buildings that needed protecting, it was difficult to find a sensor that was powerful enough. Nowadays, burglar alarms are far more technologically advanced. We’ll cover everything you need to know on this page, including:

  • The benefits of burglar alarms
  • The difference between wired and wireless alarms
  • The different kinds of Monitored alarms
  • What are DIY alarms?
  • An explanation of how a burglar alarm works
  • Questions to ask your installer
  • Other frequently asked questions
Houses in Clayton Lane with burglar alarm
Person securely opening a window

What are the benefits of a Burglar Alarm?

The reasons for getting a burglar alarm installed have not changed:

  • Protect your home and all its possessions
  • Protect your family from harm
  • Notify your neighbours and the Police of a break-in
  • Protect yourself from confrontation

It doesn’t matter to most homeowners that the number of burglaries has been dropping. The fact is that it’s still happening. And you never know when it’s your household that’s drawn the short straw this time around.

The sad fact is that most people don’t think about having an alarm fitted to their home until after they have been the victim of a burglary. So, if you don’t have an alarm on your home just yet, or you want to replace your old system with a modern home security system, please read on.

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Wired Burglar Alarms vs Wireless Burglar Alarms

The burglar alarm costs shown at the top of the page are for basic supply only and supply plus installation work.

Each of the types of systems listed is customisable. So, you can add extra sensors, extra contacts, and extra keyfobs for absolute convenience. You can also specify to a monitored alarm installer whether you want police response in the event of a triggered alarm. However, this normally costs extra at the time of installation.

What are wired burglar alarms?

With a wired burglar alarm system, everything, including the sensors, is hardwired into the mains. It means that you never have to worry about a battery running low. However, the installation prices are a lot higher because of the amount of wiring that needs to be run. Of course, this will increase your overall burglar alarm costs.

What are wireless burglar alarms?

More homeowners have wireless burglar alarms fitted than any other type of alarm. The main control panel is hooked up to the mains but the sensors are battery-powered. Because they use so little electricity, the batteries used in sensors tend to last for a long time – many, many years in some cases. If the battery in a sensor is beginning to run low, it will either:

  • Send a message back to the control panel
  • Continuously flash until you replace the battery

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Monitored Burglar Alarms

Also known as a keyholder response alarm, you can choose to have your burglar alarm monitored. What that means is that, should something happen and the alarm is set off, your control panel will tell you or someone else.

What are bell-only alarms?

A system with no monitoring attached to it is called a “bell-only” alarm. It’s given that name because the only way it signals a disturbance is via the sound of the bell or siren from the box attached to the outside of your home.

For many years, British Telecom has run a system called BT RedCare. BT RedCare informs either the Police and/or named people you want to know that an alarm has been triggered. Police will generally respond. However, if there are too many false alarms, they have been known to refuse to attend.

What a monitored alarm can do has progressed a lot in recent years. You can now wire microphones up in your home so that, when the alarm is activated, a monitoring station can listen to what’s happening. Some companies will install speakers too, to challenge any intruder who has broken into your property.

What is an auto-dialler system?

You also have the option to select an “auto-dialler” system. When your alarm is triggered, the control panel uses either a fixed line or a mobile phone card to call someone you nominate to let them know that there has been an incident. For this to work, you need a landline phone connection, or you need to live in an area with good mobile phone reception.

What are smart alarms?

There is also a new type of monitoring linked to your mobile phone. These “smart alarms” contact you or someone you’ve nominated by smartphone if your burglar alarm goes off. Smart alarm systems typically show you live video from your home of the rooms where a break-in’s been detected. As with the “auto-dialler” system, you will need to make sure that your home gets a strong mobile phone signal before you invest in one of these alarm systems. Otherwise, you could end up with unnecessary burglar alarm costs.

Alarm Keypad

DIY burglar alarms

Many people looking to install their burglar alarm system will go down to one of the major DIY chains to pick out a system. The hope here is that installing it themselves will keep their burglar alarm costs down. B&Q burglar alarms are a particular bestseller, although a wide range of alarm systems are now available online.

If you feel confident installing either a wired or wireless burglar alarm, you can do this for yourself. It will probably take about 6-8 hours. However, we urge you to please make sure that you are certain of what you’re doing when connecting the burglar alarm panel (or the sensors) to your mains electricity.

If you later decide that you want your alarm to be monitored, you’ll need to pre-plan. You’ll need to buy an alarm panel that allows a monitoring function to be added. If it doesn’t allow this, you will have to scrap your old alarm and replace it with a new one. This means you’ll have spent more on your burglar alarm costs overall. Speaking to an expert about all the options in advance and deciding on the best one for you could help to avoid unnecessary costs.

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How do Burglar Alarms Work?

There are four main parts to your burglar alarm:

Burglar alarm control panel

The burglar alarm control panel is the box on the wall (usually positioned by the front door) that switches the system off and on. Burglar alarm control panels receive signals from all the sensors in your home. Because the sensors use slightly different frequencies, you can switch the alarm on in certain parts of your home (while leaving it off in others). Your alarm system will only be looking out for alerts from the sensors it’s monitoring.

Alarm sensors and contacts

Sensors are placed around your home which looks for movement in a room. They do this using Passive Infrared Detectors (PIRs). PIRs look for moving objects that give off body heat. When it detects them, and the burglar alarm is switched on, it will then go into emergency mode. In emergency mode, it will ring the bell box, contact the Police, send a text message, or do whatever it is you’ve requested to your installer.

You can also attach contacts to your doors and windows. If your alarm is switched on and someone tries to open a door or a window, the contact will detect this, and it will then trigger the alarm.

Wireless alarm keyfobs

Keyfobs look like the type of car keys you press to open and shut the doors. You can use them to switch your alarm on or off.

Alarm “bell box”

The bell boxes are attached to the outside of your home, generally at the front and the back. They show a burglar that an alarm protects your home. If your alarm system is triggered, it’s the bell box that makes the loud noise alerting people that something may be wrong. Although still called a bell box by many in the trade, it’s more usual now to have a siren sound than a clanging bell.

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What questions should I ask a potential installer?

Before you commit to a system and to a company, it’s best to check with a potential installer that the system they propose to install really will do the job you want it to do.

What is the lead time?

You might want to ask for “lead time”. In other words: if you place an order for a system, how long will it be before you can install it? If you’ve signed up for a monitoring package, find out how long they take to respond to alarm activations. Most companies should be able to produce statistics from the last twelve months for you.

What if my pet keeps setting off my burglar alarm?

Another scenario: you’re installing pet-friendly PIRs and, after installation, your cat keeps waking up the whole household by jumping on a sideboard at 3 in the morning! What remedial action will the company take if they told you that your pet will never set off the alarm?

Will a burglar alarm system protect me?

On the subject of coverage, go through with an installer why they think that the layout of the sensors they propose is going to protect you.

Does your alarm installer have any accreditations?

On a business front, you might want to ask for testimonials from existing customers who live near you. Top tip – online reviews are great for finding reliable companies, so do your research before you commit.

Does your burglar alarm system come with a guarantee?

Despite the best intentions, even really good businesses cease trading so you should ask if the company provides an insurance-backed guarantee that your system will still be serviced and repaired by a professional if the company goes into liquidation.

burglar alarm

Should my installer belong to a trade organisation?

There are three main trade bodies in the UK which burglar alarm companies can join. Those bodies are the Security Systems and Alarms Inspection Board, National Security Inspectorate, and the British Security Industry Association.

Membership of these bodies provides homeowners with peace of mind that, in the event of a dispute, there is an independent arbiter that can force the installer to put things right. Otherwise, the installer may be ejected from the membership. If they are thrown out, most business-to-business and insurance work will be denied to them, so continued membership is really important.

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Get 3 to 4 burglar alarm quotes from trusted suppliers

You can get connected with three or four burglar alarm companies in your area which have great reputations, keen prices, and superb customer care. How do we know? Because we’ve checked them out ourselves!

We’ll put you in touch with these companies who’ll be happy to provide you with a quote on the system you want. The quote you receive is free and you’re under no obligation to accept any offer from any of the companies we put you in touch with. We’re simply here to help you find the best burglar alarm cost for you. For more information, please feel free to contact us.

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Your questions answered

How much does a burglar alarm cost?

A basic DIY burglar alarm will cost around £150. More sophisticated alarms can be priced upwards of £1,000, with additional monthly monitoring fees.

Is a burglar alarm a good investment?

Burglar alarms give you peace of mind and can mean that intruders are deterred from your property, saving you money. With a burglar alarm installed, your home or business insurance may become cheaper too.

What is a dialer burglar alarm?

In the event of a break-in or attempted break-in, a dialer burglar alarm dials a list of several numbers of your choice to alert them. This can also be used to raise the alarm in the event of a fire or other emergency.

How much does CCTV cost?

The price of CCTV can vary significantly depending on the sophistication of the system you choose. The cost can start as low as £20 and can run into hundreds of pounds.

Are monitored alarms worth the money?

Monitored alarms cost more than bell-only alarms and less than auto-dialler alarms initially. However, they have monthly fees to consider but give you peace of mind that professionals are monitoring your alarm at all times.

Can you install burglar alarms for sheds and other outbuildings?

If you store items in your shed or any other outbuilding that are valuable and personal to you, it would be terrible if you went to all of the trouble and expense of fitting a burglar alarm to your main home only to find that, if you were burgled, the thieves went for the shed or another outbuilding instead.

It is possible to connect PIRs to your home system from a distance. However, the further the building or shed you're trying to protect is from your home, the more difficult it gets. It would be wise to ask a professional installer for advice in these situations.

Are burglar alarms pet friendly?

If you have small pets in your home, ask your installer about pet-friendly PIRs. This is a clever system which monitors your room except for the first metre or so of height in the room from the floor. So if your cat is just wandering around your front room in the dead of night, the PIR sensor frequencies won't see them because they're too low down.

If you have a large pet or your small pet likes to jump on furniture, tables, breakfast bars, and so on, a pet-friendly PIR may not actually provide the solution you're hoping for. In these cases, it's better to go for a door or window contact instead of a PIR. Speak to an alarm expert to find out how much pet-friendly burglar alarms cost.

Do you need planning permission for a burglar alarm?

Burglar alarm installations (including the box on the outside of your home) are considered minor installations. This means they are not covered by planning regulations.

However, if you live in a listed building, in a conservation area, or your home is subject to an Article 4 Direction, then it's always advisable to contact someone from the planning department of your local council prior to committing any money. This ensures you don't spend out on any burglar alarm costs that could become unnecessary or unable to be installed in your home.

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Privacy Notice

Leads2Trade Limited and our associated consumer brands (Trading as [Compare Companies/Double Glazing on the web/ Conservatory Online Prices/ Leads2Trade]) of A18, The Embankment Business Park, Vale Road, Heaton, Mersey, Stockport, Cheshire, SK4 3GN Company No 05987279 have created this Privacy Notice to help you understand what personal data we process and how we use it in our business dealings with you. We are registered with the ICO (Registration No: Z9692711).

If you have any questions about this Privacy Statement, you can contact us by email at  For the purposes of Data Protection legislation in the UK, we are a Data Controller. Our website is not intended, and we do not knowingly collect data relating to children.

This Privacy Notice is intended for:

  • Our Website Visitors
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How do we process your personal data?

So that we can provide a service to you need to process some of your personal data.  We make sure that we only collect what we need and have outlined below the various ways in which we process your personal data:

When you visit our website: We use cookies on our website which collect various types of personal data. This will include details about your visits to our website; page views, downloads, navigation and exit; IP address; geographical location; browser type and version; operating system; referral source; length of your visit.

Some of these cookies are necessary to ensure that the website works correctly, and other cookies require your consent.  You can find out more about our cookies and how you can manage your consent in our cookie policy here.

Our website may contain links to other external websites.  We aren’t responsible for the practices, policies or content of such websites and suggest that you check their privacy policies to ensure that you are happy to continue browsing.

When you become one of our consumer customers: We will process your name and contact details (phone number, email and postal address) so that we can fulfil our contract to you by providing you with the home improvement quotes you have requested, to answer any enquiries you may have and to monitor how the suppliers we work with are performing.

For certain home improvement enquiries where we are unable to reach you by telephone we will send you an email to introduce you to a potential company who can help you with the specific product that you are looking to receive quotes for. We currently work with one company (WarmZilla Ltd) for Boiler enquiries, one company (Safestyle UK plc) for double glazing enquiries and one company (Verisure Services UK Ltd) for Alarm enquiries.

We will call you to check that we have the correct information and learn about how we can connect you with the best quotes in your geographical area. We may send you an SMS message if your enquiry is received outside our operational hours or to provide an update on the progress of your enquiry. An SMS opt will be provided after failure to connect via phone.

Our phone calls are recorded for training purposes however, if you are uncomfortable with this, we will not proceed with the call and delete the recording.  We also use aggregated and anonymised data to keep records for our own business use.

When you become one of our business customers: We will process your name and business contact details (phone number, email and postal address) so that we register you and put you in touch with our consumer customers who have requested home improvements quotes from you.  Our contract is with your business however we will process the personal data of our business customers under our legitimate interest.  We have done a balancing test to ensure that we are processing your personal data fairly and respectfully.

When you send us an enquiry: You may have sent us an enquiry via the contact page on our website.  We will collect your name and contact details as it is in our legitimate interest to do so that we can enter into correspondence with you and answer your enquiry.

How long do we keep your personal data?

If you have consented to non-essential cookies:  You can find out more about our cookies and update your preference on our Cookies Consent Management Platform.

If you are a consumer customer of ours: we will keep your personal data for as long as we have business dealings with you and then for a further 12 months.  This is because the quotes that you obtain are valid for up to a period of 12 months and it is important for us to be able to assist with any enquiries you have during that time.

If you have consented to receive email marketing from us, we will keep your personal data until you unsubscribe. If you choose not to engage with our email marketing messages for a period of 12 months, we will not email you again and put your personal data on a suppression list.

If you are a business customer of ours: we will keep your personal data for as long as we have a contract with you and then for a further 7 years in accordance with HMRC guidelines.

How do we use your personal data to communicate with you?

Non-Marketing Communications include: service messages regarding quotes or appointments from our third party services to enquiries and other communications to ensure that we deliver the services you expect from us.

If you are one of business customers, you will receive emails regarding your registration, services messages and invoices.  You will have access to our members area dashboard portal where you can find more information about your account details with us.

Marketing Communications include: Emails regarding other services we offer as well as content marketing we hope you will find useful. If you are one of our consumer customers, you will only receive email marketing from us if you have given us your consent. We do send out unsolicited email marketing messages to our business customers when we feel we have a legitimate interest to do so. You are welcome to unsubscribe from marketing messages at any time.

If you have consented to marketing cookies such as Facebook Pixels you may be served Facebook Ads regarding our services.  You can change your cookies consent at any time by visiting our Cookie Consent Management Platform.  You may also wish to change your Facebook settings if you don’t want to see targeted advertising.

Social Media: We use Facebook, and Linkedin (for business purposes). We sometimes use paid advertising on these platforms, but we will only use custom audiences with your consent.  You can find a copy of this Privacy Notice on our Facebook page in the ‘About’ section.

Social Plugins: We use social plugins on our website pages which allow you to share products with your friends and families.  These buttons are deactivated by default and only activated once you click on them.  When you click on these buttons your personal data will be transferred to the plugin provider.  This will include IP addresses which are then used to serve you relevant ads.

Who has access to your personal data?

We share your personal data with various organisations so we can fulfil our contract with you to help us run our business and to fulfil our legal obligations.

These include: Marketing Agencies, Accountants, Webhosts, IT and CRM Agencies. We also use Microsoft, DropBox, and Infonotes to ensure that we run our business efficiently.

If you are one of our consumer customers: we will share your details with the suppliers in your geographical area who are able to give you a quote for the work, you require.  Our suppliers are registered with us and we ensure that they are reputable and certified where appropriate.  We will discuss this with you in our phone call so that you are aware of what is happening every step of the way.

We ensure that our systems are robust, and we will only share your data with organisations who have appropriate safeguarding mechanisms in place such as Standard Contractual Clauses.  We have Data Processing Agreements with our Data Processors and never sell personal data to third parties unless we have your agreement to do so.

If Leads 2 Trade is sold or transfers its assets to another party, your personal data could be one of the transferred assets.  If your personal data is transferred it will remain subject to this Privacy Notice.  Your personal data will be passed onto a successor in the event of a liquidation or administration.

What are your rights?

You have several rights which you can access free of charge.  In certain circumstances we reserve the right to charge a reasonable fee if your requests are unfounded or excessive.

You have the right:

  • To be informed about the collection and use of your personal data.
  • To access your personal data via a Data Subject Access Request (DSAR)
  • To have inaccurate personal data corrected or completed
  • To have your personal data erased
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  • To object at any time to direct marketing
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We don’t use any automated decision making.

For more information about these rights and when you can request them, please visit the Information Commissioners Guide to Data Subject Rights

If you wish to exercise any of these rights, please contact us by email at We will respond to you within one month.  If your request is complex and we require more time, we will contact you and let you know within the first month.

How can you submit a query or a complaint?

We are always happy to answer your queries regarding privacy.  Please contact us by email at 0800 124 4308

If you have a complaint, please get in touch with us so that we can resolve any concerns.  You also have a right to lodge a complaint with the Information Commissioner’s Office if you believe your personal data has been processed in a way which does not comply with Data Protection Legislation.  You can call the ICO helpline on 0303 123 1113 or visit their website here.

Changes to this Privacy Notice

We keep this Privacy Notice under regular review.  The most recent update is 4th April 2022