Santa Monica, Calif. Richard Neutra alumnus David Hyun designed the four-bedroom Modern Tree House in 1960. The post-and-beam home has a main level with double-height living room, incorporated tree, floor-to-ceiling windows, eat-in kitchen, bar, and three bedrooms; up a spiral staircase are the primary suite, two offices, a den, and a deck. Outside are native oaks, a giant sycamore, wood walkways, garden beds, a patio with pool, and a gate into Rustic Canyon Park. $6,995,000. Billy Rose, The Agency, (310) 650-2999
Washington, D.C. Designed by George T. Ward of Vosbeck-Ward, the A.F. Maxwell house was built in 1961, expanded in the 1980s, and recently updated. The four-bedroom home on University Terrace features hardwood floors and walls of glass; an open contemporary kitchen overlooking a sitting area with fireplace; a…