I heard that in ancient Moscow, house fires were so frequent, that there were markets of pre-half-built houses for sale outside the town. They weren't that expe

I heard that in ancient Moscow, house fires were so frequent, that there were markets of pre-half-built houses for sale outside the town. They weren't that expensive (wood was cheap), wo that if your house was burnt it was not really that big of a deal (still big, but not the end of the life). The biggest threat was massive blaze. If some house caught a fire, no one would be putting it out, instead, everyone would be breaking other nearby houses, to contain the fire.