More damage occurred due to the 1994 Northridge earthquake and the record precipitation during the 2004 – 2005 rainy season . The Ennis House Foundation had estimated that it could cost US$ 5 million just to stabilize the building , and US$ 15 million for full restoration . After the rains the building was briefly red-tagged as " no entry " but was down graded to yellow - for limited entry by late 2005 . At that point significant damage to the retaining wall at the southern rear of the building remained . In 2005 the house was added to the National Trust for Historic Preservation 's list of the " 11 Most Endangered Historic Places "
1994 Northridge earthquake
1994 Northridge earthquake
Ennis House