Your dolls are elegant, cultured and, most importantly, modern. They do not want some ranch house that looks like something set in a bourgeois suburb. No. They want the Qabis Haus, Amy Whitworth's stately home that doubles as a coffee table:
The Qubis Haus draws inspiration from Bauhaus, Mies van der Rohe and Le Corbusier. When the kids are gone, it is a sophisticated multi-level coffee table of birch plywood. When the kids want to play, it transforms easily into a doll house with the addition of slide-in wood and perspex panels.
You can view more pictures at the link.