Mobility & Evacuation Readiness

Twenty Minutes to Leave

What happens when a house becomes unsafe with no warning at all

Chris Leming · Published August 21, 2026 · Last reviewed August 21, 2026

The call came before the dust settled

A few years ago a man I knew called me within minutes of a tree coming through his house. Not a branch. The tree.

I was not his insurance agent. He had one, and I imagine he called them too, at some point. But the first call he made was to someone he thought would know what to do, and that is worth sitting with for a moment, because it tells you what people actually need in the first hour and it is not what most of us assume.

I drove over. I walked the property with him, looked at what the tree had done to the structure, and told him which parts of his own house he should not go back into. Then we worked out the order of the next several hours — what to do first, what could wait until morning, who needed to be called and who did not.

And then there was the part nobody plans for.

He had to get his wife and his child out of a house that was no longer sound, at night, and they had nothing ready. No bag. Not a change of clothes, not a phone charger, not the medications, not a single document. Everything they owned was inside a building that was now dangerous to enter — and they went back in anyway, more than once, because everything a family needs to get through a night was still in there.

I watched a family make repeated trips into a compromised structure to collect things that could have been sitting by the door in a bag they packed on a quiet Sunday.

What made it hard was not the tree

The tree was over in a second. It was not negotiable and nothing anyone did that day changed it.

What made the night hard was that a family had to make a dozen decisions at speed, in the dark, under stress, about things they had never thought about once. Where do we go. What do we take. Is it safe to go back in for the laptop. Who do we call first. Does the dog come with us.

Every one of those questions has an easy answer on a Sunday afternoon. Not one of them has an easy answer at ten at night with a hole in your roof.

This is not a rare event, and it is not a dramatic one

Let us be straight about likelihood. Most households will never have a tree come through the roof. It is not something to worry about and I am not going to pretend otherwise.

But widen it slightly and the picture changes. A house fire. A gas leak the fire department will not let you return to. A pipe that lets go and floods two floors. A wildfire evacuation order. A tornado warning with fifteen minutes on it. A police incident on your street. None of these individually is likely in a given year. THE CHANCE THAT NONE OF THEM EVER HAPPENS TO YOU IS SMALLER THAN PEOPLE ASSUME.

And they share a shape. You get little or no warning. You leave in minutes rather than hours. You do not get to plan on the way out, and going back in is either impossible or unwise.

That is a category, not a coincidence. It is what the evacuation domain is actually about — not the spectacular scenario, but the ordinary Tuesday when your house stops being somewhere you can stay.

What twenty minutes buys you

Not preparedness in the abstract. Something narrower: THE ABILITY TO WALK OUT ONCE AND NOT GO BACK.

That is the whole thing. Not surviving a disaster — walking out of your own house one time, with what your family needs, and not having to make a second trip into a place you have been told is unsafe.

It costs one Sunday afternoon and about a hundred dollars in a bag you probably already own. And unlike most preparedness work, you will know within twenty minutes whether you have done it or not.

Pack it in this order

First, the things that cannot be replaced by money. Medications, in their labelled containers, with a written list of what they are and what the doses are. Copies of identification and the documents that would take months to replace. Glasses. Anything a dependent cannot function without.

Second, the things that make the next twelve hours bearable. A change of clothes and shoes for every person — SHOES ARE THE ONE PEOPLE FORGET AND THE ONE THAT MATTERS AT NIGHT. Phone chargers. Cash in small bills, because card systems are exactly what fails in the situations that make you leave. Water and something to eat.

Third, the things specific to your household that nobody else's list would include. Pet food and a leash. A comfort object for a small child. The spare key to somewhere else. Whatever it is that only you know about.

Then put it somewhere you can reach on the way out. Not the attic. Not the back of a closet behind the Christmas decorations. Somewhere a person leaving in a hurry passes anyway.

The order matters because if you are interrupted halfway through packing it, you want to have done the irreplaceable part first.

And the question underneath all of it

The bag is the easy part. Here is the harder one, and it is the reason this domain sits alongside seven others rather than standing alone.

IF YOU HAD TO LEAVE TONIGHT, WHERE WOULD YOU GO?

Not in general — specifically. Which address. Have you told them. Would they answer at eleven at night. And if that person is away, who is the second one? A family with a bag and nowhere to go has solved the smaller half of the problem.

The man I drove out to see that night did have somewhere to go, and it mattered. What he did not have was a bag, an order of operations, or any idea whether his own house was safe to walk into — and those three gaps turned a bad night into a considerably worse one.

Why this sits alongside seven other domains

Mobility and evacuation readiness is one of the eight domains Sentinel Resilience assesses. It is consistently among the weakest, and it is one of the least expensive to fix — which is an uncomfortable combination.

The assessment does not ask whether a household owns a go-bag. It asks whether anyone could find it, whether it contains what this particular household actually needs, whether there is a destination and a backup destination, and whether the people involved know any of it. Those are different questions and the answers are usually less comfortable.

I have spent more than a decade sitting with families around events like this one. The thing I saw over and over was not that people lacked resources. It was that nobody had ever asked them the question on a quiet afternoon, when it costs twenty minutes to answer.

Sources

  • This article draws on the author's direct professional experience over more than a decade in insurance and financial services. Identifying details have been removed. No client of Sentinel Resilience is described.

Chris Leming is the founder of Sentinel Resilience, a Private Preparedness Advisory assessing household preparedness across eight domains. He has worked in insurance and financial services since 2012.

This article is general information and not legal, financial or medical advice. Structural safety after damage to a building should be assessed by a qualified professional. For guidance specific to your household, work with qualified licensed professionals in the relevant field.

Want to know where your household stands across all eight domains? The Sentinel Resilience Assessment takes about 12 minutes and returns a scored report immediately. It is free, and there is nothing to buy at the end of it.

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