Ok so I need some clarification. Building has a crawlspace so there are a few steps up to the front door (please don’t tell me the front has some weird name too), so the entrance level isn’t necessarily the ground level what do you do?

Option 2 the building is built on uneven ground so the front entrance is ground level but the back entrance is on the floor below the entrance level. How do you number that?

For simplicity sake front refers to street view side and back is the opposite of front.