When was the first house made?

The first house might not have been much of a "house" as we would regard it today, but rather as a gathering place. Australopithecus humans probably used tree canopies to get out of the rain. Archaeologists have discovered a large meeting hall in Nice, France that could have been used for a house, but they doubt that early humans used it for this purpose. It dates from about 400,000 years ago. Some of the earliest examples of houses come from the Mezhirich people of Ukraine from 15,000 years ago, who built houses on the steppe in village communities in order to hunt animals better. Still, they do not see the trappings of "home" here. The first "houses" that archeologists accept as such come from the Natufians from the Middle East. These dwellings date from about 12,000 years ago. These houses are seen as semi-permanent shelters and not just protection against the elements.
http://nautil.us/issue/8/home/in-search-of-the-first-human-home