Back in 2005, the Tyler Texas Area Builders Association built a large home from the ground up in less than 3 hours. At the time, it set a record. Here's the video.
It was a promotional effort to publicize the Association, but the overarching message was the importance of planning. While the build itself took just 2:52 hours, it was the product of months of meetings – among engineers, architects, builders, landscapers, tradesman, and project planners – to spec out every last aspect of the project.