The short answer
A keyholder service means someone holds a key to your property and attends when the alarm activates, to check the premises and reset the system. When a monitored alarm triggers, the alarm receiving centre (ARC) contacts the nominated keyholders in order. Many people use friends, family or neighbours as keyholders for free, but a professional keyholding company typically charges around £10–£30 a month as a retainer, plus a call-out fee of roughly £30–£80 per attendance. Professional keyholders are SIA-licensed security operatives. A keyholder is essential for monitored systems, since the ARC needs someone able to attend. These are typical UK ranges for guidance, not quotations.
Keyholding is a practical part of how monitored alarms work, but it can be free or paid depending on who responds. The figures below are typical UK ranges for guidance, not quotations.
Typical keyholding costs
- Friend / family keyholderfree
- Professional retainer~£10–£30/month
- Call-out fee~£30–£80 per attendance
- OperativesSIA-licensed for professional firms
- Why neededARC must have someone to attend
What a keyholder does
A keyholder is simply a nominated person who holds a key and is willing to attend your property when needed. In the context of a monitored alarm, the keyholder's role is to respond to an activation: when the alarm triggers and the ARC works through its escalation, it contacts the keyholders in turn. The keyholder then travels to the property, checks whether there has been a genuine break-in or a false alarm, secures any damage if needed, resets the alarm, and reports back. They are the human presence the monitoring service relies on at the scene.
Most people nominate two or more keyholders — typically family, neighbours or friends who live nearby and can attend within a reasonable time. The ARC keeps this list and calls down it until someone responds. The reason more than one is sensible is availability: a single keyholder who is away or unreachable leaves no one to attend, which undermines the monitoring. Keyholders need to be reachable, local enough to attend, and comfortable approaching a property that may have been broken into.
Practicalities matter when choosing keyholders. The ARC needs people who can realistically attend within a reasonable time, who are reachable out of hours, and who can operate the alarm to reset it. It is sensible to make sure each keyholder knows the alarm code or has a fob, understands the basic reset procedure, and is comfortable entering a property that may have been broken into. Keeping the ARC's keyholder list current — names, numbers and who is away — is one of the simplest things that keeps a monitored system working, and one of the most common things that gets neglected.
| Keyholder option | Typical cost | Notes |
|---|---|---|
| Family / neighbour | free | must be local and reachable |
| Professional retainer | ~£10–£30/month | SIA-licensed firm on standby |
| Professional call-out | ~£30–£80 each | charged per attendance |
| Recommended number | 2+ | ensures someone is available |
Indicative UK figures for guidance. Sources: SIA guidance and Checkatrade keyholding cost guides.
Free versus professional keyholding
For most homes, keyholding costs nothing because the keyholders are family, friends or neighbours who agree to hold a key and respond. This is the standard arrangement and works well where you have reliable people living close by. The only consideration is whether they are genuinely available — someone who travels often, lives far away, or would rather not approach a possibly burgled property is not a dependable keyholder, however willing.
A professional keyholding company fills the gap where personal keyholders are not practical — for example if you live alone, have no nearby contacts, or own a property that is empty for long periods. These firms charge a monthly retainer to hold your keys and be on standby, plus a call-out fee each time an operative attends. Their staff are SIA-licensed security operatives, trained to attend incidents, and they are available 24 hours. The cost buys reliability and a professional response, which can matter for higher-risk or frequently empty homes.
The choice between free and professional keyholding often comes down to availability and willingness rather than cost alone. A neighbour who travels frequently, or family who live an hour away, is not a dependable first responder however well-meaning, and many people are understandably reluctant to approach a property at night that may have an intruder inside. A professional firm removes that burden and personal risk, providing trained, SIA-licensed operatives on standby 24 hours a day. For some owners that reliability alone justifies the retainer, regardless of whether free keyholders are theoretically available.
Why monitored alarms need keyholders
Keyholding is not an optional extra for a monitored system — it is integral to how monitoring works. When the ARC receives an activation, its job is to follow an agreed escalation, and that escalation depends on having someone who can attend, verify and reset. Without a keyholder, the ARC can register the alarm but has no one to send, and the activation cannot be properly resolved on the ground. This is why setting up a monitored alarm always involves nominating keyholders.
Keyholding also matters for police response. Where a system holds a police URN and a confirmed activation prompts police attendance, a keyholder is still needed to meet the police, provide access and secure the property afterwards. Forces will not hold keys themselves. So even on a police-responding system, the keyholder remains the person who deals with the aftermath — securing a forced door, resetting the alarm, and being the point of contact. Whether free or professional, having reliable keyholders is what makes the whole monitoring chain function.
Professional keyholding also dovetails with alarm response and guarding services that some firms offer alongside it. Beyond simply attending, a professional response operative can carry out a documented check of the property, wait for police on a confirmed activation, and arrange emergency boarding-up if a door or window has been forced. These add-ons cost more but turn keyholding into a fuller incident-response service. For most homes the simpler hold-keys-and-attend arrangement is enough, but the option exists for properties where a more thorough response is wanted when the owner is away.
Some firms also offer alarm response and guarding services alongside basic keyholding. Beyond simply attending, a professional response operative can carry out a documented check of the property, wait on site for police on a confirmed activation, and arrange emergency boarding-up if a door or window has been forced. These add-ons cost more but turn keyholding into a fuller incident-response service. For most homes the simpler hold-keys-and-attend arrangement is enough, but the option exists for properties where a more thorough response is wanted when the owner is away.
Frequently asked questions
Do I have to pay for a keyholder service?
Not necessarily. Many people use family, friends or neighbours as keyholders for free. A professional keyholding company is only needed if you have no reliable local contacts, and it charges a monthly retainer of around £10–£30 plus a call-out fee per attendance.
Why does a monitored alarm need a keyholder?
When the alarm receiving centre handles an activation, it needs someone able to attend the property, verify whether it is a genuine break-in or false alarm, and reset the system. Without a keyholder there is no one to send, so keyholding is integral to how monitoring works.
Are professional keyholders licensed?
Yes. Professional keyholding firms use SIA-licensed security operatives, regulated by the Security Industry Authority, who are trained to attend incidents and available 24 hours a day. This is part of what the retainer and call-out fees pay for.
Sources & further reading
Figures on this page are typical UK ranges drawn from published sources and depend on your specific property and system. They are guidance, not a quotation.