[Jerry of San Fran]

1) The reference to keeping part of the old structure was in 2018. I believe the plan has been changed since then.

2) I see no evidence of the inclusion of the old structure in the new building looking at the architectural drawings.

3) Demolition could not possibly be done without access with the scaffolding.
There will be screens on the scaffolding to prevent stuff from falling onto the street.

4) I seriously doubt that there is anything of value to be saved from current structure. I have seen a photo of the original building before it was clad to make it look modern.

I will see if I can get more information on this project.