A friend is building a house themselves, nearly finished now.
They were living on site in a large wooden hut or shed so as to save money and be nearby.
This was recently totally destroyed by fire, and they were very lucky to escape with their life.

This narrow escape underlines the importance of taking proper fire precautions even in temporary structures.
No fire extinguisher was to hand, prompt use of such might have put the fire out.
The fire started near the only door, which was shut.
It was not easy in smoke and darkness to locate the door catch, fortunatly the door yielded to a good kick.
The only light went out as soon as the fire started. No flashlight instantly to hand, it was in a tool box under the bed.
The fire spread with great speed and hope would have been lost very quickly indeed.

The owners cellphone, car keys and wallet were lost in the fire, thereby stranding them without any contact or means of travel.
Even in the relatively mild climate of the UK, being stranded on a hillside without boots*, outdoor clothing* vehicle keys, cellphone or money could have had serious consequences, especialy if any injury had occured.
Fortunatly they were not badly hurt, and were "rescued" by a supplier delivering materials the next morning.

The partly built house provided basic shelter.

The nearest neighbour, about a mile away, saw the fire, but assumed it was intentional burning of rubbish.

Their dog also escaped, though with burns to the front paws. The animal is now reluctant to enter any shed, hut or similar small structure.
* Removed to relax after work and then lost in the fire.