Common hallways separate the mail entry and the community laundry room.

The same day she let me know a 3 yr old oven has an error code. 

. - My plumber notices that many common area shut off valves are seized and almost all shut off valves in my unit are seized. - After testing the shut off valves in the basement storage room, one of the hot water valves started leaking.

I think I was using that calculator in error assuming that the nosing was part of the run length, but it doesn't appear to be based on the fact that overall run does not change.

Again this was more of common practice type of question so I appreciate all the input

Is this something I should worry about or is this common and cosmetic only?

Some of the most common questions I see in the forums are related to rent collection and property management software.

I’ve been trying all day, just get an error message.

If there is a "common" area, you will have to pay that electric bill.

It is common for land  to be owned free and clear so seller financing happens all the time.