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What Is a Fire Safety Plan for Construction Sites?

Last updated: 5 March 2026

A fire safety plan for a construction site is a document that sets out the measures for preventing fires, detecting fires early, and ensuring safe evacuation of all people on site. It is a legal requirement under the Regulatory Reform (Fire Safety) Order 2005 and CDM 2015.

Construction sites are particularly vulnerable to fire due to the presence of flammable materials, hot works, temporary electrical installations, and the constantly changing nature of the work environment.

Why Construction Sites Need Fire Safety Plans

• Construction fires cause an estimated £400 million in damage annually in the UK
• Temporary structures and materials are highly combustible
• Fire escape routes change as the building progresses
• Sprinkler and alarm systems are not yet operational during construction
• Multiple contractors and activities create complex fire risks

What Should a Fire Safety Plan Include?

Fire Prevention Measures

• Hot works permit system and controls (fire watch, extinguishers, clearance distances)
• Storage of flammable materials and gases (separate, ventilated, signed)
• Electrical safety (temporary distribution, PAT testing, cable management)
• Housekeeping standards (waste removal, clear access routes)
• Smoking policy and designated areas
• Arson prevention (site security, perimeter fencing, lighting)

Detection and Warning

• Temporary fire detection and alarm systems (where appropriate)
• Manual call points and air horns
• Fire marshals and their responsibilities
• How the alarm will be raised across the entire site

Evacuation

• Escape routes (marked, lit, kept clear at all times)
• Assembly points (positioned away from the building, accessible)
• Roll call procedure (using site register or induction records)
• Procedures for visitors and persons with reduced mobility
• Coordination with emergency services (access routes, water supply points)

Fire-Fighting Equipment

• Location and type of fire extinguishers (reviewed as building progresses)
• Fire blankets and hose reels where appropriate
• Maintenance and inspection schedule
• Training for fire marshals and all workers

Key Responsibilities

Under CDM 2015, the principal contractor must ensure adequate fire prevention and evacuation arrangements. This includes appointing fire marshals, maintaining escape routes, and ensuring all workers receive fire safety induction. The fire safety plan must be updated as the building progresses and conditions change.