The most damaged area was Long Beach. According to the LA times, "Buildings made of unreinforced brick and mortar were particularly susceptible to the shaking" (See picture below). Many people were displaced from their homes and left in make-shift "refugee" camps (LA Times). The damage was heart wrenching and the lack of government regulated building regulations was felt. The total damage caused about $50 million (in 2017 dollars) worth of damage ( Department of Conservation).
Damage in the 1933 earthquake
This earthquake led to the California State legislature's creation of the Field Act. This act, "requires that the building designs be based on high-level building standards adopted by the state and that plans and specifications be prepared by competent designers qualified by state registration" (Department of Conservation). The Act only applied to new buildings, but as of the 1970s every pre-1930s school were required to make their buildings "earthquake proof".