It's still there (see link below image).
GSV
There are many pictures of the house at
realtor.com. I also found the following text by Scott Stevens on
flickr.com:
"In 1973 this freight car bridge was the only access to my home in Topanga Canyon. Foot access only. It was a rental which had the dubious distinction of having the worst flea infestation I've ever come across. Loved the house and location so fought the fleas and won. I took a trip to Calcutta and Nepal for about a month and left the house in the hands of a fellow we called Boston Bert who was helping a great band of our friends called Country. Michael Fondiler, Steve Fondiler, Ian Espinoza, Tom DeSimone and Tom Snow were creating awesome music together. When I returned from Nepal I found the living room floor moldings lined with empty Jack Daniels bottles, 2 deep in some places, as Bert always did enjoy a party. Good house, good friends and good times."
There are plenty of other photos online.