The one thing that really sucks about this last building boom? We had the opportunity to build houses that had conservation features: gray water recycling, passive solar, etc. but none of it was done. The bean counters probably though “no one will pay an extra $15k for a gray water system but they will for pergo floors and granite.” In fact, most of these homes (mcmansions) built in the last 10-15 years are going to cost MORE to heat/cool/live in than houses built in the 70’s and 80’s because they are so big.