During the outbreak, previously rational people, myself included, caught a debilitating illness called Dot.Doom fever. Even though the fever was contagious, there were no physical symptoms and the fever could only be diagnosed by observing the symptoms of irrational behaviour and delusions that infected people displayed. Although not everyone caught the illness, every sector of society was affected: from doctors to cab drivers, hair dressers to solicitors, office workers to architects.
Prior to the epidemic, people used to go about their usual business of building houses in a slow and controlled manner: first the foundations, then the walls, followed by the roof and, finally, the additional luxuries like roof gardens and hot tubs.
One of the most pernicious effects of the Dot.Doom fever was that, in the early days, it made people feel like Masters of the Universe and every house they touched seemed to turn to gold. As you can guess, people started building more and more houses. Some of the afflicted even borrowed Wongatons, the currency of Planet Wonga, to build or buy more houses.