One thing that should kick up the ticker is the fact that LV buyers are now buying more than one unit and putting them together. Ms. Romero and staff customize the design for every house — doing site plans, moving walls, enlarging baths and closets, converting bedrooms into exercise rooms, home theaters, offices — whatever the owner wants....And for those who find one LV a bit too confining, she has a two-story version on her drafting board."