I'm not condoning the demolition, just adding information.
The building at 3390 West San Marino Street, known as San Marino Villas, was a three-story luxury Spanish Colonial/Mission Revival style apartment designed by architect H. Monroe Banfield in 1923. It was "destroyed" by a "suspicious" fire just over a year ago - more info in
an article on the LAFD's blog. Raw footage of the fire can be seen
here. I found the article below in the July/August 2014 edition of
Los Angeles Conservancy News (PDF file).
ETA: The fire damage was still clearly visible when the GoogleMobile drove by in February 2014. The LAFD article says that after the fire,
"The Department of Building and Safety 'Red Tagged' the structure, deeming it unsafe for entry." Having said that, the exterior looks almost completely intact in the image below, and the guy demolishing the structure in
GW's video isn't having an easy time knocking down the walls.
GSV