Interesting finding and observations there, GaylordWilshire….I believe the Letts, Jr. house also had a greenhouse on the premises where many of the Letts, Sr. plants ended up.
The home also briefly appeared on a few 1960s Beverly Hillbillies episodes (see @ 2:17 and 4:35)
• Video Link
http://youtu.be/eLI_0CAwzZY
The gatehouse is fake but they at least got the correct street address of “10236” (Charing Cross Road).