A Guide to Fire Alarm Regulations for Commercial Buildings

When it comes to the regulations of fire alarms, there are a number of key requirements that you need to be aware of if you operate a commercial premises in the UK.

Fire alarm regulations for commercial buildings are designed to ensure that people can be warned quickly if a fire starts. For most commercial premises in England and Wales, fire alarm requirements are shaped by the Regulatory Reform (Fire Safety) Order 2005, the findings of your fire risk assessment, and recognised guidance such as BS 5839.

This means the right fire alarm or smoke detection system will depend on the size, layout, use, and risk level of the buildings. A small low risk unit may have different requirements from a large office, warehouse, school, restaurant, health care premises, or multi-occupied commercial building.

In this blog, we’ll walk you through the fire alarm regulations for commercial buildings in the UK, including smoke alarm, fire alarm testing, and maintenance requirements, as well as exploring who’s responsible for keeping systems compliant.

What are the key regulations surrounding fire alarms?

The main piece of fire safety legislation that applies to fire alarms in England and Wales is the Regulatory Reform (Fire Safety) Order 2005. Covering fire safety for non-domestic premises, it includes the requirements around firefighting equipment, fire detection, and fire alarms.

The Order states that, where necessary, premises should be equipped with appropriate fire detectors and alarms. This doesn’t mean every building will need the same system, but it does mean the ‘Responsible Person’ must properly assess the risks and make sure suitable fire detection and warning arrangements are in place.

In addition to the Fire Safety Order, BS 5839 is the British Standard covering fire detection and fire alarm systems for non-domestic premises. It provides guidance on the design, installation, commissioning, and maintenance of fire alarm systems, helping businesses meet their legal duties in a practical and recognised way.

Because requirements can vary depending on the building, it’s best practice to arrange a professional fire risk assessment and seek competent advice from a qualified professional, like our engineers here at City Fire Protection, before installing, replacing, or upgrading a commercial fire alarm system.

Does every commercial building need a fire alarm system?

Not every commercial building will need the same type of fire alarm system, but most commercial premises will need suitable fire detection and warning arrangements in place. The correct approach depends on the building and how it’s used.

Other factors that can affect fire alarm requirements include:

• The size of the building
• The number of floors
• The building layout
• Escape routes and travel distances
• The number of occupants
• Whether members of the public use the building
• Whether people sleep on site
• The type of work carried out
• The fire risks present
• Whether the building is shared by multiple businesses
• Whether a shouted warning would be enough
• The findings of your fire risk assessment

In a very small, open plan, low risk premises where everyone can be warned immediately, a more basic arrangement may be suitable. However, this situation is limited. In most commercial buildings, a properly designed fire alarm system will be needed to provide suitable warning and support safe evacuation.

Are smoke alarms enough for commercial buildings?

People often overlook smoke alarm regulations for commercial buildings, and in commercial fire safety, the requirement is much more important than simply fitting domestic style smoke alarms.

In some small and simple commercial spaces, basic smoke detection may be enough, depending on the fire risk assessment. However, many commercial buildings need a more comprehensive fire detection and alarm system. This may include smoke detectors, heat detectors, manual call points, sounders, visual alarm devices, and a control panel.

A commercial fire alarm system should be designed around the risks in the building. For example, smoke detectors may be suitable in offices and circulation areas, while heat detectors may be better in kitchens, dusty environments, or areas where steam could cause false alarms.

The key point is that smoke alarms must be suitable for the premises. A system that’s adequate for a small office may not be suitable for a large warehouse, restaurant, school, factory, or multi-occupied building.

Who is responsible for commercial fire alarm compliance?

The Responsible Person is the person or organisation with control over fire safety in the premises. Depending on the building, this could be:

• An employer
• The building owner
• A landlord
• An occupier
• A facilities manager
• A building manager
• A managing agent
• Another person with control over the premises

In shared buildings, there may be more than one Responsible Person. In this situation, each Responsible Person should work together to make sure fire safety arrangements are coordinated and suitable for everyone using the building.

The Responsible Person must ensure a fire risk assessment is carried out and reviewed regularly. They must also put appropriate fire safety measures in place, maintain them, plan for emergencies, and provide staff with relevant information, instruction, and training.

For fire alarms, this means making sure the system is suitable, tested, serviced, repaired when needed, and supported by clear records.

What are the fire alarm testing regulations for commercial buildings?

Fire alarm regulations for commercial buildings don’t stop once the system has been installed. The system must also be tested, serviced, and maintained so it continues to work properly.

Fire alarm testing should usually be managed in two parts: routine testing by the business or Responsible Person, and professional servicing by competent engineers.

Routine user testing

User testing is commonly carried out weekly at a set time, using a manual call point during working hours. The purpose is to confirm that the alarm system activates correctly and that occupants can recognise the alarm signal.

If some employees aren’t usually present during the scheduled test, an additional monthly test at a different time may be useful. Where there are multiple manual call points, a different one should be tested each week where practical, so that all call points are checked over time.

The test should be brief, and the result should be recorded in the fire alarm logbook. If the alarm doesn’t sound correctly, if a fault appears on the panel, or if part of the system doesn’t respond, the issue should be investigated promptly.

Professional testing and servicing

Professional fire alarm servicing should be carried out by a competent and qualified person, usually a specialist fire safety company, like City Fire. For many commercial buildings, this is typically carried out at least every six months, although some higher risk or more complex premises may require more frequent servicing.

Professional testing can include:

• Fire alarm logbook inspection
• Control panel checks
• Visual inspection of manual call points
• Visual inspection of detectors and other devices
• Sounder and visual alarm device checks
• Battery and power supply checks
• Review of fault history
• Review of false alarm history
• Checks following building layout changes
• Review of changes to use or occupancy levels
• Identification of remedial actions

Failure to service and maintain your fire alarm system correctly can create compliance issues, reduce system reliability, and make it harder to prove that your building meets required fire safety standards.

What fire alarm records should commercial buildings keep?

Good record keeping is an important part of commercial fire alarm compliance. If your building is inspected, or if there’s a fire, you may need to show that your fire alarm system has been properly tested, serviced, and maintained.

Commercial buildings should keep records of:

• Weekly fire alarm tests
• Professional servicing and maintenance visits
• Faults and error messages
• False alarms and unwanted activations
• Repairs and remedial works
• Fire alarm commissioning documents
• Systems upgrades or alterations
• Fire risk assessments
• Staff fire safety training where relevant
• Any changes to the building use or layout that affect fire alarm coverage

Clear records help demonstrate that the Responsible Person is actively managing fire safety, rather than simply installing a system and leaving it unchecked.

Get in touch today for professional fire alarm services

To ensure your building has a fire alarm system that supports current fire safety requirements, it’s important to work with a professional fire safety company.

At City Fire, we provide specialist fire alarm services for commercial buildings, including installation, maintenance, servicing, repairs, and upgrades. Whether your premises are used for retail, offices, hospitality, education, healthcare, warehousing, manufacturing, or tenant occupation, our team can help you understand your requirements and keep your system reliable.

Be sure to get in touch with our experts today to discuss your fire alarm requirements in more detail.