1:The lot has unlevel edges for no clear design reason. Unlevel lots can damage neighbourhood terrain, so there has to be a good reason in the design to have a non-flat lot.

2:The design of the lot requires it to be on an unlevel lot, but it must be clear in the text of the post that the lot is not flat.

3:The design of your lot requires it to be on an unlevel lot and you have made that clear in your post. Thanks!

5:Your lot edges are flat so that it is easy to place in a neighborhood. Thank you!