Firstly, you need to mention the choice of building materials, which is very large. It is one thing to apply bricks in the construction, and another use special panels. Now there are many brigades who are engaged exclusively with one type of work, namely the type of construction. Secondly, one cannot but say about the arrangement of communications that were not previously common as now. Half a century ago, electricity and radio were fed to the house, all this was done in just a couple of hours, and now, in addition to electricity, autonomous sewage, Internet and gas supply are being brought to private houses.