Yeah, all these fugly pop-outs that are typical in the "McMansion" style have to take a lot more time than just making a normal, more-or-less rectangular-footprint house. More measuring, more cutting, more separate pieces to apply, for every layer that goes on. More ridges and valleys to deal with when roofing.

They do make the house look bigger (on the outside) than a same-square-footage house with a more traditional floor plan, though, so... I guess that makes it worth it, to someone?