Going, going ... where?

What a shock when I drove by and saw this Old Northeast garage apartment on dollies! The entire masonry foundation is gone or rubble. It had crenelated blocks that were popular in 1910 when this property was built (the main house, at least. I'm not sure when the garage was built). I used to own this property so have a special interest in what happens.  The property is on two lots, and with all the new homes being built to replace old smaller ones, it's possible that's what the plan is for this property - but it looks like the upper floor is being moved. I wonder why - and where.