It always trickles down. The property managers know who built the buildings. The construction company knows what companies produced the construction materials. The company that made the construction materials knows what chemicals are in them. That's the person who writes the warning, and the construction crew tells the property manager, and the property manager keeps a list in their office for public viewing.

I think it has more to do with the gardeners and maintnence than the orig construction. But ya, they so much as use a floor cleaner from the grocery store, that would have to be documented.