There is very similar construction in Chicago condos if you are talking about remodeling. All contractors must follow city building code, but each building has it own construction rules to make sure your final product does not interfere with the quiet enjoyment of neighbors, i.e. sound proofing wood or stone floors, not having the washer/dryer waste drains flowing out to the sink drain, it will cog the waste stack and affect everyone below, attaching window treatment to the metal window frame will void out a warrantee.
If you get a cheaper suburban house contractor to do a Chicago condo job, be prepared to have them walk away when it take longer then they thought and they start losing money. I see this happen all the time. Get a contractor who is familiar with condos.