Conventional and addressable fire alarm systems for all commercial premises
BAFE-accredited installers — systems meet BS 5839 and insurance requirements
Annual maintenance contracts to keep your system compliant and reliable

A commercial fire alarm system is an integrated detection and alerting system designed to identify the signs of fire — smoke, heat, or carbon monoxide — and alert building occupants and emergency services. Commercial systems are categorised under BS 5839 and range from simple conventional systems for small premises to sophisticated addressable systems for large, multi-zone buildings. Regular testing and annual maintenance are legal requirements under the Regulatory Reform (Fire Safety) Order 2005.
Fire alarm installation and maintenance costs vary significantly between contractors. The quality of design, equipment, and installation is critical — a poorly specified or maintained system can fail when it matters most. Comparing quotes from BAFE-accredited installers ensures you get a correctly designed system that meets BS 5839 standards, satisfies your insurer, and complies with fire safety legislation — all at a competitive price.
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Common questions about commercial fire alarm installation and compliance in the UK.
Yes. Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person for a commercial premises must carry out a fire risk assessment and implement appropriate fire detection and warning measures. Most commercial premises require a formal fire alarm system. Local fire authorities and insurers typically require a BS 5839-compliant installation.
A conventional system divides the building into zones. When an alarm is triggered, the panel shows which zone is affected — but not the specific device. An addressable system assigns a unique address to every detector and call point, allowing the panel to identify the exact device that triggered. Addressable systems are recommended for larger or more complex commercial premises.
Under BS 5839 and the Regulatory Reform (Fire Safety) Order, commercial fire alarm systems must be tested by occupants weekly and inspected and serviced by a competent engineer at least twice a year. Annual maintenance contracts from BAFE-accredited engineers ensure your system remains compliant and reliable.
Costs depend on system type, premises size, and the number of detectors and zones. A basic conventional system for a small commercial premises might cost £800–£2,000 installed. A fully addressable system for a multi-storey or multi-zone commercial building can run £5,000–£50,000+. Annual maintenance typically costs £200–£600 depending on system complexity.
You must maintain a fire alarm log book recording all tests, maintenance visits, faults, and activations. Commissioning certificates, maintenance records, and risk assessment documentation should be kept on-site and made available to fire authorities if requested. Your BAFE-accredited installer will provide all required commissioning documentation.