I had glimpsed this building before I knew what it was. It's set back from Altadena Drive, easy to miss. I admired it's cloister-like structure. And then I sort of forgot about it until I read a fascinating post at Avenue to the Sky. (Check it out. He's even got old newspaper clippings.)
It was once called the Artist's Guild Building and the Pasanita Apartments. It housed a pottery school and a popular dining and dancing venue in the 1920's and 30's, according to blogger Thal Armathura. I tried to find more information about the building online, such as the architect and when it was built, but I struck out. I like the California mission style, though. Very pretty.
It's not clear to me when the structure was altered. The Pasadena Jewish Temple purchased the building in 1942, and somewhere in there the north wing of the building seems to have been either shortened or somewhat drastically remodeled. But for the most part, from what I can tell, the building remains in beautiful condition.
This building is not listed as a historical property in Pasadena. It makes me wonder what else is out there, set back back from the street, easy to miss and almost forgotten.