Constructed in 1960 in Bethesda, MD, this residence was designed by DC architect, Hugh Jacobsen, as a one-story plus basement flat-roofed glass and brick house wedged into a hilly, wooded site overlooking a creek. Additions soon followed in 1965 (George Hartman, architect), including a 2nd floor study and a steel-framed bridge linking the upper and lower yards. The house suffered physically over the decades: roof leaks, wet walls, lack of insulation and structural issues. The new owners were committed to bringing the house into the 21st century with an aggressive and comprehensive renovation/restoration program that included a large Library addition, a detached pavilion, new MEP systems, interior finishes and extensive landscaping. The original vertical wood siding was replaced with concrete siding in a rain screen application. See here
for The Washington Post article.