Alarms · 7 September 2026
Alarm System Takeover Cost & Process | Surrey & SW London
Find out how an alarm system takeover works and what it costs. Takeovers from £150–£250 across Surrey & South West London.
Alarm System Takeover: What It Involves, Cost & How It Works
Need an alarm system takeover? If you've moved into a property with an existing intruder alarm, changed security companies, or inherited an alarm from a previous owner, you may not need to replace the entire system.
An alarm system takeover allows a qualified engineer to inspect the existing installation, check that it is operating correctly, review programming and access, and take responsibility for ongoing servicing.
At Surrey Fire & Security Systems, we carry out alarm system takeovers across Surrey and South West London, working with many existing wired, wireless and hybrid alarm systems.
What Is an Alarm System Takeover?
An alarm system takeover is when a new security company or engineer takes responsibility for an existing intruder alarm system.
You might need an alarm takeover because:
- You've moved into a property with an alarm already installed
- You've purchased or taken over a business premises
- Your previous alarm company has closed or is no longer providing a service
- You want a more local or responsive alarm engineer
- You've inherited an alarm system from a previous owner or landlord
- You want to arrange ongoing alarm servicing with a new company
A takeover does not automatically mean replacing the existing alarm.
The engineer first assesses the system to determine whether the equipment is suitable, functional and capable of being maintained. If the system is in good condition, it may be possible to continue using it.
What Happens During an Alarm Takeover?
A professional alarm takeover should be more than simply changing a code.
The existing system should be inspected and tested so you understand what equipment you have, whether it is working correctly and whether there are any faults or security issues.
1. Inspect the Existing Alarm System
The engineer will identify the main components of the alarm system, including the control panel, keypad, detectors, door contacts, external siren and other connected devices.
Where possible, the manufacturer and model of the control panel will also be identified.
This helps establish what the system can do and whether the existing equipment can continue to be supported.
2. Check Programming and Engineer Access
Where applicable, programming access and engineer credentials are reviewed and changed as part of the takeover.
This is an important security step when an alarm has previously been managed by another company.
It helps ensure that the system can be securely maintained going forward and that previous access arrangements are dealt with appropriately.
3. Test the Detectors and Devices
The alarm devices are tested to make sure they are communicating with the control panel and responding correctly.
Depending on the system, this can include:
- PIR movement detectors
- Door and window contacts
- Shock sensors
- Panic buttons
- Internal and external sirens
- Keypads
- Wireless devices
- Other connected security devices
Testing can identify failed devices, weak batteries, communication problems and other faults that may not be obvious during normal use.
4. Check the Control Panel
The control panel is the central component of the alarm system.
Its condition, programming, power supply and any existing faults should be checked.
The engineer can also review user access and identify old settings or faults that may need attention.
5. Check Communication and Monitoring
If the alarm is connected to an app, signalling device or monitoring service, the communication system should also be checked.
Depending on the installation, this could include:
- Mobile signalling
- Wi-Fi or network connections
- Alarm apps
- ARC monitoring
- Other signalling equipment
If the system is currently monitored by another provider, the monitoring arrangements may need to be reviewed separately.
6. Check the Backup Batteries
Alarm systems rely on backup batteries to continue operating if mains power is interrupted.
During a takeover, the condition of the control panel battery and, where applicable, wireless device batteries should be checked.
If batteries are weak or require replacement, we will advise you on the necessary replacement work and any additional cost.
7. Identify Faults or Obsolete Equipment
Not every alarm system will be suitable for a straightforward takeover.
Older systems may contain obsolete equipment, damaged wiring, discontinued components or devices that are no longer supported.
If we identify an issue, we'll explain what needs attention and discuss the available options.
In some cases, a repair or small upgrade may be all that's required. In others, replacing part or all of the system may be the better long-term solution.
How Much Does an Alarm System Takeover Cost?
The cost of an alarm system takeover depends on the size, type and condition of the existing system.
Typical Alarm Takeover Cost: £150–£250
For most domestic and smaller systems, our typical alarm takeover price is between £150 and £250, depending on the size and complexity of the installation.
This generally covers the takeover inspection, programming and access checks, detector testing and a general assessment of the alarm system.
Replacement parts, batteries, repairs, additional devices or upgrades may be charged separately if required.
Larger commercial alarm systems or installations requiring extensive investigation or remedial work may cost more.
If you're unsure what alarm system you have, send us a photo of the alarm keypad or control panel and we'll be happy to discuss it with you.
Do I Need to Replace My Existing Alarm?
Not necessarily.
One of the main advantages of an alarm takeover is that you may be able to continue using the equipment already installed.
If the system is in good working order and suitable for continued use, there may be no reason to replace it simply because you have changed engineers.
However, if the system is very old, unreliable, unsupported or unsuitable for your requirements, we may recommend an upgrade or replacement.
We'll explain the available options rather than automatically recommending a new system.
Can You Take Over a Texecom or Ajax Alarm?
Yes. We can work with many existing intruder alarm systems, including systems from Texecom, Ajax, Pyronix and other major manufacturers.
The exact takeover process depends on the equipment installed and the configuration of the system.
If you don't know the make or model of your alarm, don't worry. A photograph of the keypad or control panel is often enough for us to identify the system before arranging a visit.
What Happens After an Alarm Takeover?
Once the takeover has been completed, you can continue using your existing alarm system with a new engineer responsible for its maintenance.
We can also discuss ongoing intruder alarm servicing and maintenance to help keep the system reliable.
Regular servicing can help identify failing batteries, detector problems, communication faults and other issues before they become bigger problems.
Why Is an Alarm Takeover Important?
Your intruder alarm is there to protect your property, so you should know what system you have and who is responsible for maintaining it.
A professional takeover gives you the opportunity to:
- Establish who is responsible for maintaining the system
- Check that the alarm is operating correctly
- Review programming and access
- Identify existing faults
- Check backup batteries
- Understand how the system works
- Decide whether monitoring is required
- Identify whether an upgrade is recommended
Simply continuing to use an inherited alarm without having it properly checked could leave faults or other issues undiscovered.
Alarm System Takeover in Surrey & South West London
Surrey Fire & Security Systems provides alarm system takeovers across Surrey and South West London, including Weybridge, Cobham, Esher, Walton-on-Thames, Woking, Guildford, Chertsey, Addlestone and surrounding areas.
We work with a wide range of existing intruder alarm systems and can advise you whether your current installation can be taken over, repaired, upgraded or should eventually be replaced.
Frequently Asked Questions
How much does an alarm system takeover cost?
A typical alarm system takeover costs £150–£250, depending on the size, type and condition of the existing alarm. Additional repairs, replacement batteries, parts or upgrades may cost extra.
Do I need to replace an alarm installed by another company?
No. If the existing system is suitable, functional and supportable, it may be possible to continue using it without replacing the entire alarm.
Can you take over an old intruder alarm?
In many cases, yes. However, older systems need to be assessed to determine whether parts are available and whether the system remains suitable and reliable.
Can you take over a Texecom alarm?
Yes. We can take over many existing Texecom alarm systems, subject to the condition and configuration of the installation.
Can you take over an Ajax alarm?
We can work with many existing Ajax installations. The exact takeover process depends on the system configuration and access available.
What if my alarm has faults?
Any faults identified during the takeover will be explained to you. Depending on the problem, we can discuss repair, replacement or upgrading the affected equipment.
Can you service the alarm after taking it over?
Yes. Once the takeover is complete, ongoing alarm servicing and maintenance can be arranged to help keep the system operating reliably.
Do you cover Weybridge and surrounding areas?
Yes. We provide alarm takeover and security services across Surrey and South West London, including the KT, GU and SW postcode areas.
Take Back Control of Your Existing Alarm
If you've moved into a property with an existing alarm, your previous security company is no longer available, or you simply want to change alarm engineers, you may not need a completely new system.
We can inspect your existing alarm, explain its condition and provide a clear price for taking it over.
To get started, send us:
- Your postcode
- A photo of the alarm keypad or control panel
- The alarm manufacturer or model, if known
- Whether the system is wired or wireless
- Approximately how many detectors you have
Typical alarm system takeover cost: £150–£250, depending on the size and complexity of the system.
Surrey Fire & Security Systems Ltd
📞 07404 808277
✉️ office@surreysec.com
🌐 surreysec.com
Need security advice for your property?
Call Surrey Fire and Security Systems Ltd on 07404 808 277 for a free site survey.