Fire detection and alarm systems in communal areas need a weekly call-point test, plus planned servicing that checks detectors, panels, batteries and cause-and-effect. The inspection produces a service certificate and defect list.
For communal fire alarm systems, BS 5839-1 recommends a weekly user test, operating a different manual call point each week, and servicing by a competent person at intervals not exceeding six months, with a logbook. Alarms inside individual homes follow BS 5839-6, which grades systems A to F and sets coverage categories LD1 to LD3.
Reviewed 15 October 2026. Confirm against the official guidance below before relying on it.
| Category | Protects |
|---|---|
| L1 | All areas of the building |
| L2 | Escape routes and defined high-risk rooms |
| L3 | Escape routes and the rooms opening onto them |
| L4 | Escape routes only |
| L5 | Areas defined by the fire risk assessment |
| P1 / P2 | Property protection: all areas, or defined areas |
An alarm system that fails to sound is the single most dangerous failure in a residential fire. Weekly test logs and six-monthly service certificates are the evidence regulators, insurers and the FRA all depend on.
A communal system in a block has a control panel, call points and a logbook, and the routine is weekly test, periodic service and a record of every fault and false alarm. Dwelling alarms are different: BS 5839-6 grades the equipment (A to F, by whether there is a control panel, mains power and so on) and the coverage (LD1 to LD3).
The landlord's legal minimum for rented homes in England is set by the Smoke and Carbon Monoxide Alarm (England) Regulations 2015 as amended: a smoke alarm on every storey used as living accommodation, a carbon monoxide alarm in any room with a fixed combustion appliance (other than a gas cooker), and a check that each works at the start of the tenancy.
Weekly tests, service visits, faults, false alarms, and any changes to the system. A system that tests on time but has no record of faults being cleared will not stand up to scrutiny.
The maintenance duty flows from the Regulatory Reform (Fire Safety) Order 2005; BS 5839-1 (communal/commercial) and BS 5839-6 (dwellings) define system grades, categories and the testing regime. Smoke and carbon monoxide alarm requirements in individual homes are set by the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022.
Regulatory frameworks differ across the UK — see the city pages below for Scotland, Wales and Northern Ireland specifics.
BS 5839-1 recommends a weekly user test of one manual call point (a different one each week) and servicing by a competent person at intervals not exceeding six months.
The record kept with the system: tests, service visits, faults, false alarms, and any changes. It is the evidence that the system was maintained.
The legal minimum for rented homes in England is a smoke alarm on each storey and a carbon monoxide alarm where there is a fixed combustion appliance. For blocks, the fire risk assessment decides the communal system; BS 5839-6 sets grades A to F and LD1 to LD3 for dwellings.
BS 5839-1 is the code of practice for fire detection and alarm systems in non-domestic premises, including the communal areas of blocks. BS 5839-6 covers systems in domestic premises.
For communal systems, yes — BS 5839-1 expects a weekly test from a different call point each time, logged. It takes minutes and it's the first record a fire officer asks for.
Part 1 covers communal and commercial systems; Part 6 covers detection inside dwellings, with grades from mains-interlinked alarms to full panel systems.
A competent servicing organisation — typically third-party certificated (e.g. BAFE SP203). Kaarr stores the certificates and chases the next visit.
BS 5839-1 expects a weekly user test of communal systems and periodic servicing by a competent firm — normally every six months. Domestic (in-flat) systems follow BS 5839-6. Kaarr runs both schedules.
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