"early neolithic longhouse" - does this remind anyone else of how barns are still made, a little?
"These regions were settled by the first wave of Neolithic farmers belonging to the so called Linear Band Pottery Culture (Linearbandkeramik, LBK), that stretched across a vast area of Europe, from the Paris Basin in the west, through to Ukraine and Moldavia in the east. This culture lasted for about 600 years, from 5500 to 4900 cal BC.
They are famous for their distinctive settlement structures, consisting of unique, easily recognisable long houses (Figure 2) which seem to be an astonishingly uniform element of this culture throughout the vast territory of distribution."
http://www.pasthorizonspr.com/index.php/archives/03/2013/afterlife-of-early-neolithic-houses-in-the-polish-lowlands
"a rectangular post-built dwelling with a pitched roof structure, which rests its weight on three rows of posts along the its axis"
"The length of these long houses varies from 12 to 40 plus metres, though the average is about 20 metres. The width is more standardised, ranging from between 5 to 8 metres."
reminds me of the barns my great-grandfather built... smaller door, but I guess there was no need for a bigger one