D12 Fire Statements: What They Are and Why They Matter for Planning Approval

Fire safety is no longer a consideration reserved solely for building control. In recent years, planning authorities across the UK have introduced new documentation requirements designed to ensure that fire safety is considered at the very earliest stage of development. One of the most significant of these is the D12 Fire Statement.

For developers, architects and planning consultants, understanding D12 Fire Statements is now essential. In 2026, failure to submit a compliant D12 can delay or derail a project before it even reaches the construction phase.

What Is a D12 Fire Statement?

A D12 Fire Statement is a formal planning document required by many local authorities – particularly in London and major urban areas – for certain types of development.

It is designed to demonstrate how fire safety has been considered within the planning application and how the proposed development aligns with national fire safety guidance.

The statement typically covers:

• Fire appliance access routes

• Firefighting water supplies

• Layout considerations for evacuation

• Emergency vehicle access and turning areas

• Building height, use and occupancy

• The relationship between site layout and fire safety

Unlike a fire strategy report, which is often produced later for building control, a D12 Fire Statement is a planning-stage document.

When Is a D12 Fire Statement Required?

D12 Fire Statements are most commonly required for:

• Residential developments over 18 metres in height

• Major commercial or mixed-use schemes

• Large-scale housing developments

• Schemes located in high-risk urban environments

Planning authorities use the D12 process to ensure that fundamental fire safety principles are embedded into the site design before approval is granted.

Why D12 Fire Statements Matter

The purpose of a D12 Fire Statement is not to overwhelm applicants with technical detail, but to demonstrate that fire safety has been considered as a core design principle rather than an afterthought.

This is particularly important following the introduction of the Building Safety Act, which strengthened accountability and introduced the “golden thread” of safety information across a building’s lifecycle.

By submitting a clear, compliant D12, developers can:

• Reduce the risk of planning refusal

• Speed up the approval process

• Demonstrate competence and professionalism

• Build trust with planning authorities

What Should a Good D12 Fire Statement Include?

A high-quality D12 Fire Statement will clearly address:

1. Site Context

An overview of the development site, surrounding buildings and access routes.

2. Fire Appliance Access

Details of how fire engines will access the site, including road widths, turning circles and proximity to building entrances.

3. Firefighting Water Supplies

Information on hydrants, water mains and other firefighting provisions.

4. Evacuation Principles

An outline of how occupants will evacuate in an emergency and how the site layout supports safe escape.

5. Building Height and Use

A summary of building classification, number of storeys and anticipated occupancy levels.

How FireRA Supports D12 Submissions

FireRA works closely with planning consultants, developers and architects to prepare D12 Fire Statements that are clear, concise and fully compliant with local authority requirements.

Their consultants understand the expectations of planning officers and fire services, ensuring that submissions are practical rather than theoretical.

FireRA’s service includes:

• Early-stage site reviews

• Liaison with design teams

• Clear documentation aligned with planning policy

• Ongoing support during the planning process

This collaborative approach reduces delays and avoids the frustration of rejected or queried applications.

Avoiding Common Pitfalls

Some of the most common issues with D12 submissions include:

• Overly generic statements

• Missing site access information

• Failure to reference relevant guidance

• Late involvement of fire safety specialists

FireRA ensures these mistakes are avoided by embedding fire safety thinking into the planning stage from day one.

Final Thoughts

D12 Fire Statements represent a major shift in how fire safety is treated within the planning system. They ensure that safety is considered before bricks are laid – not after problems emerge.

In 2026, developers who treat D12 Fire Statements as a formality risk unnecessary delays and reputational damage. Those who work with experienced professionals such as FireRA gain a smoother planning journey and a stronger foundation for safe, compliant buildings.