Burglar Alarm Servicing in Greater London (48)

Keeping your home secure isn’t just about locks and keys. A well-maintained burglar alarm gives you peace of mind that your family and belongings are safe.

Whether your alarm battery is due a change, your system needs a routine service, or you’re exploring the cost of a new burglar alarm installation, you’ll find checked tradespeople on Checkatrade to help in London.

Burglar alarm servicing in London

Every tradesperson listed has passed up to 12 checks before joining us. You can browse real, verified reviews, compare ratings, and contact them directly, so you know exactly who’s coming to your door.

What to expect from hiring a burglar alarm engineer in London

Most homeowners in London call out an engineer for:

• Annual burglar alarm servicing
• Replacing backup batteries
• Fixing faulty alarms
• Installing new burglar alarms or upgrading older systems

Costs

• A typical burglar alarm service cost in the UK is around £90, depending on system type and call-out time.

• The cost of burglar alarm installation can vary widely. A basic system might start from £500, while more advanced monitored alarms can run into the thousands.

• Monitoring fees (if you choose a service like ADT) usually start from £35 - £40 a month in the UK.

What’s included in a service?

• Checking the alarm control panel
• Testing sensors, keypads, and sirens
• Replacing or recharging the backup battery
• Making sure your system still meets safety standards

How long does it take?

Most services take 1 - 3 hours. A full alarm installation can take half a day to a full day depending on the size of your property.

Qualifications to check for

Look for membership of trade associations such as NSI or SSAIB. Always check their profile on Checkatrade for reviews and qualifications listed.

Burglar alarm servicing in London: Homeowners vs renters

For homeowners

You’re responsible for servicing and maintaining your burglar alarm. Keep records of servicing for insurance purposes. Some insurers may ask for proof if you make a claim.

For renters

Responsibility usually sits with your landlord. If your alarm stops working, report it straight away. In some cases, you may be able to request an upgrade or additional security features, but always get written approval before booking work yourself.

Emergency burglar alarm servicing in London

Sometimes things can’t wait. Common urgent call‑outs include:

• An alarm that won’t stop ringing
• A system failing to arm
• Faulty wiring or power issues

For urgent support, find emergency burglar alarm services in London with our search tool.

Find a burglar alarm service in London for the job you need

On Checkatrade, you can find tradespeople for:

• Burglar alarm installation
• Burglar alarm servicing
• Replacing burglar alarm batteries
• Alarm upgrades (wired to wireless, or smart integrations)
• Fault-finding and repairs
• Adding new sensors or keypads

Use Checkatrade's directory to find checked burglar alarm servicing in London. Or, post a job directly and let our tradespeople come to you.