Excellent job Anon.
I have some stuff to add.
Names associated with the building:
https://www.fastpeoplesearch.com/address/1138-wilshire-blvd-ste-100_los-angeles-ca-90017
Looks like the building was in the process of redevelopment:
http://westedgearchitects.com/project/1138-wilshire/
Cafe Wilshire: https://www.yelp.com/biz/cafe-wilshire-los-angeles
1138 Wilshire, LLC OWNS THE BUILDING - http://www.buzzfile.com/business/1138-Wilshire,-LLC-213-489-5330
LLC CONTACT: 1126 Wilshire Blvd
Los Angeles, CA 90017
Contact: Thomas V Ginardi - the lawyer
Dont know how old this is: https://homemetry.com/house/1138+WILSHIRE+BLVD,+Los+Angeles+CA