Thanks 3940 (may I call you 3940?) that's kind of what I thought, too. I'm going to go ahead and take my chances, besides if one of them turn out to be a problem and pose a threat to the thread I (we) can always delete it.
Thanks E-R, here are a few more surviving Krotona buildings.
The Administration Building at Krotona, 5235 Primrose Avenue
the Private Chapel at Krotona, 6206 Temple Hill Drive
the Science Building at Krotona, 2152 Vista del Mar Avenue
the Swain bungalow at Krotona, 2176 Argyle Avenue
6209 Scenic Drive
Only surviving bungalow from the original three built in 1912.
Tuttle bungalow, 2172 Argyle Avenue
private residence, 6106 Temple Hill Drive
the Ternary Building, 6205 Temple Hill Drive
Originally (1912-13) three separate residences connected by covered walkways and gardens.
the Ternary Building garden retaining wall
All of these surviving buildings have been turned into private residences and apartments.
all above images from A SURVEY OF SURVIVING BUILDINGS OF
THE KROTONA COLONY IN HOLLYWOOD at Architronic by Alfred Willis,
University of California, Los Angeles
Krotona enjoyed only a brief stay in Hollywood, deciding in 1926 that the city had begun to encroach on their pastoral setting and leaving to re-establish themselves in Ojai where they continue to thrive to this day. But in that brief time Krotona produced the seeds of many seminal and important Southern California institutions; the Hollywood Bowl and the Pilgimage Theater were first imagined here, United Artists was concieved here, stars and lesser lights lived and played here, John Barrymore romanced Mary Astor here and, of course, Augustus Knudsen (and his family) went on to make a deep and indelible mark on Hawaii.
Krotona Apartments sign
image from underthehollywoodsign