Kenwood: sunroom - 2006 & 1968.

A ca.2006 photo showing the other end of the sunroom in its modern day incarnation. The current structure is slightly bigger, and certainly more substantial than the sunroom which John had built, presumably sometime in late 1964/early 1965. There doesn't seem to be any record of planning permission for John's sunroom, and it is quite likely that none was ever actually sought.
As we've seen, although the current sunroom occupies roughly the same space as the Lennon-model, it's not the same physical structure. However, the external terrace wall has survived intact:


In John's day, the internal sunroom entrance led directly into the kitchen, and the sunroom itself was probably intended to be an equivalent of the small room off the kitchen at Mendips, where John spent much of his time when at Mimi's.
The Lennon-era kitchen is long gone, of course, and the present sunroom (or garden room as the estate agent would have it) leads to an internal hallway.