Architect Rudolph Matern — sometimes working with architects Herman York, Samuel Paul and others — was responsible for the design of tens of thousands of suburban homes during the US’s post-WWII residential construction boom. He sold architectural drawings for single-family homes via ads in local papers, blueprint catalogs, and model home exhibitions.
Here is his design G-92, a circular vacation home with four extruding wings, advertised in 1967 –
The literal centerpiece of the house was its sunken circular lounge, “a kind of combination living room, family room and what-have-you” –
As far as I can ascertain, the design was never built.
Two years later he came out with another round house design, plan W69102, even more modern in emphasis –
I haven’t found a built version of this one, either.