Robert Rosenbaum, a former architecture student and fan of Frank Lloyd Wright, was inspired so much by the famous architect that he designed his own home based on Wright’s Usonian ideals.

Usonian is the style of affordable, modular homes that Wright designed after the Depression. They are smaller and less elaborate than his earlier Prairie homes, mostly one story of concrete blocks and glass with heated concrete slab floors and built-in furniture.

Rosenbaum’s 1,200-square-foot house is laid out on a 4-foot grid and built with concrete blocks 2 feet wide, 1 foot tall and 4 inches thick. All house features — hallways, walls and built-ins — are oriented on the lines of the grid. The concrete bricks are accented by vertical-grain fir used for the built-ins.

The house includes a red-colored concrete terrace leading into an open living/dining area with fireplace, built-in bookcases and seating, and a compact kitchen. No drywall or moldings are found on the blocks, and no flooring was installed over the heated concrete floor pad.

Rosenbaum and his wife Carole Elder made the house’s 1,600 concrete blocks. That task took three years — blocks were hand poured, four at a time, taking two hours to prepare and overnight to set. Blocks were developed in four types: solid, window, solid corner and window corner.