The 1960 I.M. Pei Slayton House has been relisted at $2.95 million. It originally went on the market around a year for $4.25 million. Pei designed the Cleveland Park home (located here), with its unique three poured concrete vaults, for William Slayton, a friend and colleague at the the Urban Renewal Administration Commissioner. Hugh Newell Jacobsen designed plans for the renovation done by the owner who bought the 2/3 house from the Slayton family after William Slayton and his wife passed away after living in the house for 40 years. See my previous posts on the Slayton House.