The brick work in the listing picture tells me a third floor was added.... a quick google maps check confirms:
July 2023:
View attachment 66989
October 2021:
View attachment 66990
It could be a sweet deal that someone just ran out of money or momentum to finish or it could be a nightmare of poorly done major renos. For sure get a list of permits and inspections and what is outstanding...were all trades paid, etc.. Others here will know better but banks may have issues with it (no working bathrooms, kitchens, reno state, is it now commercial, etc.)?
There is likely a lot of expensive stuff to finish it but that can depend on what materials come with it and DIY vs trades.
Property taxes listed are pre reno, I expect they will double, maybe triple at some point.