The curving white wall in architect Jay Atherton’s bedroom is optimally sited to capture shadows from the redbud tree outside his window. The bed rests on a concrete floor. "It was important that the rooms be pure spaces," says Cy Keener, a carpenter, who helped design and construct the spartan home in Phoenix.  Photo 7 of 24 in My House: Two Architect Roommates Build an Unusual Modernist Home in the Arizona Desert from Startin’ Spartan

My House: Two Architect Roommates Build an Unusual Modernist Home in the Arizona Desert

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The curving white wall in Atherton’s bedroom is optimally sited to capture shadows from the redbud tree outside his window. Pip will have to content himself with concrete floors—at least until his housemates buy a couch. Or a rug.