Stay Put vs Evacuation: Are We Quietly Rewriting the Rules?

The debate around Residential Personal Emergency Evacuation Plans is often framed as a question of inclusion.

Who needs help?

Who is at risk?

What is the right thing to do?

These are important questions. But they are not the most important question.

The more fundamental issue is this:

Are we, perhaps unintentionally, beginning to rewrite the basis of fire safety in residential buildings?

For decades, the design of purpose-built blocks of flats in the UK has been underpinned by a clear and consistent strategy: stay put.

This is not passive inaction. It is an engineered position.

It relies on compartmentation, fire-resisting construction, and the assumption that a fire will be contained within the flat of origin for a sufficient period to allow the fire and rescue service to intervene. It avoids the risks associated with mass simultaneous evacuation, including congestion, smoke spread in common areas, and delayed escape for those most at risk.

It is a system.

And like any system, it depends on its assumptions holding true.

The growing emphasis on evacuation planning for individuals who cannot self-evacuate begins to place pressure on those assumptions. Not because the objective is wrong, but because the implications are not always fully explored.

If evacuation becomes an expectation for some residents, what does that mean for the wider strategy?

If assistance is required, who provides it?

If evacuation routes are used earlier or more frequently, how does that affect tenability for others?

If reliance is placed on intervention before the fire and rescue service arrives, is that consistent with the original design intent?

These are not edge cases. They go to the heart of how buildings are meant to perform in fire.

There is a risk here of creating a hybrid model without fully acknowledging it. A building designed for stay put, managed as if evacuation may be required, but without the infrastructure, staffing, or safeguards that a true evacuation strategy would demand.

That is not resilience. It is ambiguity.

None of this is to suggest that the status quo should remain unchallenged. The Grenfell Tower fire rightly exposed the consequences of system failure, and the need to consider the needs of all residents, including those who may not be able to self-evacuate.

But change needs to be coherent.

If the industry is moving towards a model where evacuation is expected, even in part, then that shift needs to be reflected in:

• design assumptions

• management arrangements

• regulatory guidance

• and operational response

Otherwise, we are asking buildings to do something they were never designed to do.

And asking people to rely on arrangements that may not stand up when tested.

The answer is not to abandon stay put, nor to default to evacuation.

It is to be explicit.

What is the strategy?

Who does it work for?

And, critically, where does it not?

Until those questions are addressed clearly and consistently, there is a danger that the industry drifts into a position where neither approach is fully credible.

And in fire safety, uncertainty is rarely benign.