Salem

I am currently in the process of trying to flatten the land for my Hovel, with the Client it seems that the land I am using is about 1000 lowest and 1006 highest, what kind of numbers do I need to be able to build it, or exactly even in all places?
I looked across the forum and couldn't find any exact help, so i thought I may as well ask a question.
Thanks
Gnar

Perfectly flat. So, 1000 all across, or 1006, whichever is easiest.

Houses need exact flat land.

(lol sorry, posted at same time)