As others point out, that does happen sometimes with homes. There's a British tv show, Grand Designs, where it happens constantly: https://en.wikipedia.org/wiki

As others point out, that does happen sometimes with homes. There's a British tv show, Grand Designs, where it happens constantly: https://en.wikipedia.org/wiki/Grand_Designs https://en.wikipedia.org/wiki/Grand_Designs But, in support of your point, it usually does cause the builds to be over-budget and behind schedule.