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2026-07-20 · HawkSwift Ltd

How Long Does a Fire Risk Assessment Take? UK Guide

If you are a business owner, landlord, or the designated responsible person for a commercial premises, you have a legal duty under the Regulatory Reform (Fire Safety) Order 2005 (RRO) to carry out a suitable and sufficient fire risk assessment. One of the most common questions we hear at HawkSwift Ltd is simply: how long does a fire risk assessment take?

While there is no single answer, understanding the timeline helps you plan for compliance and minimise disruption to your daily operations. As a general rule, a straightforward commercial premises can be assessed in a few hours, while complex sites may take a full day or longer.

What Happens During a Fire Risk Assessment?

To understand the timeframe, it helps to know what the process actually involves. Under the RRO, a fire risk assessment is a systematic review of your premises to identify fire hazards, evaluate the risk to occupants, and check that adequate fire safety measures are in place.

A thorough assessment typically covers:

  • Identifying fire hazards: Checking ignition sources, flammable materials, and fuel loads.
  • Evaluating occupants: Considering who uses the building, including vulnerable individuals or members of the public.
  • Reviewing fire protection: Inspecting fire doors, alarms, emergency lighting, and extinguishers.
  • Assessing escape routes: Ensuring pathways to safety are clear, adequately protected, and properly signed.
  • Reviewing management procedures: Examining staff training, maintenance schedules, and emergency plans.

The assessor must physically walk through the premises, take notes, and often photograph evidence to compile a legally compliant report.

Typical Timeframes for Different Premises

The duration of an assessment depends heavily on the size, complexity, and use of the building. While every site is unique, here are some general timeframes based on the types of properties we assess at HawkSwift:

  • Small, simple premises (e.g., a small office, independent shop, or small café): Usually takes between 1 to 3 hours on-site. These buildings generally have a simple layout, straightforward escape routes, and a small number of occupants.
  • Medium premises (e.g., a larger office, a restaurant, or a small manufacturing unit): Typically takes half a day (3 to 4 hours). These sites often have kitchens, multiple rooms, or specific hazards that require closer inspection.
  • Large or complex buildings (e.g., multi-storey office blocks, large retail warehouses, or buildings with multiple occupancies): Can take a full day or more. Assessors must review extensive fire strategy documents, complex compartmentation, and multiple escape stairways.
  • Houses in Multiple Occupation (HMOs) and large residential blocks: Timeframes vary significantly depending on the number of storeys and individual units, often taking half a day to a full day.

Factors That Affect the Assessment Duration

Beyond the square footage of your building, several other variables influence how long the on-site assessment will take:

Building complexity: A modern, open-plan office is much quicker to assess than an old, converted building with multiple extensions, awkward layouts, and varying ceiling heights.

Current documentation: If your existing fire safety documentation is outdated or missing, the assessor will need to spend more time establishing the current baseline. Having previous assessment records, alarm test certificates, and maintenance logs ready can speed up the process.

Accessibility: If all areas of the premises are easily accessible, the physical inspection moves quickly. However, if the assessor has to wait for keys, gain access to locked riser cupboards, or navigate difficult areas, the time required will increase.

Occupant numbers and vulnerability: Sites with a high turnover of staff, members of the public, or vulnerable residents require a more detailed evaluation of evacuation procedures, which naturally extends the on-site time.

The On-Site Visit vs. The Final Report

It is important to distinguish between the time spent on your premises and the time it takes to receive your final documentation. The physical inspection is only the first half of the process.

Once the NEBOSH-qualified assessor has completed the on-site walk-through, they must return to the office to analyse their findings, format the evidence, and produce a detailed, structured report. This document will highlight any significant findings and provide a clear, prioritised action plan to ensure your compliance with the Management of Health and Safety at Work Regulations 1999 (MHSWR) and the RRO.

At HawkSwift Ltd, we understand that time is of the essence for busy business owners. We pride ourselves on delivering comprehensive 48-hour reports, ensuring you receive your completed fire risk assessment documentation within two working days of the on-site visit.

Preparing for Your Assessment

You cannot eliminate the time required for a proper assessment, but you can ensure the process runs as smoothly as possible. To help your assessor work efficiently:

  • Ensure all areas of the building are accessible, including loft spaces, plant rooms, and storage cupboards.
  • Have your previous fire risk assessment (if one exists) available for review.
  • Gather any recent fire alarm test certificates and extinguisher maintenance records.
  • Inform your staff that an assessment is taking place so they are prepared to answer basic questions regarding fire procedures.

Stay Compliant with HawkSwift

Ultimately, the time it takes to complete a fire risk assessment is a small investment compared to the safety of your occupants and the protection of your business. Our professional, plain-English approach ensures you understand your legal duties without the jargon.

If you are unsure about the specific requirements for your premises, we recommend seeking professional guidance. Our fire risk assessments start from just £199 + VAT. To get started, simply book a fire risk assessment with our team today.

Get a Fire Risk Assessment Quote