can you tell us a bit more about the building such as why the gov thinks it has structure problems? is it wood, brick, how many floors? since it has only 21 units, it does not sound like a big building? Commercial buildings built in those years are all made of bricks, very good quality and can last for very long time.
In case, you can not back out. This is something you may want to look into and figure out how much it will cost you.
