The house was added to the National Register of Historic Places listings in Santa Cruz County , California on December 12 , 1976 . It is California Historical Landmark number 998 . The adobe was severely damaged in the 1989 Loma Prieta earthquake . One wall had completely collapsed , and the house needed seismic retrofitting before being safe for the public . Owner Edna Kimbro sold it to the state of California in 2002 . Starting in August 2007 , Friends of California State Parks volunteers and the California Conservation Corps began restoration by making 2500 adobe bricks
1989 Loma Prieta earthquake
1989 Loma Prieta earthquake
Castro Adobe