Amazing that you even agreed. One building per sqare mile is hardly a
farm house per farm section. Don't count the barn. Thats crazy.
There is hardly any place you could fly in US with that definition.

L.D. wrote:
About 10 years ago I got my hands slapped for flying over a congested

area. I ask them what a congested area is. They said if more than 1
building was in a sq. mile, it is congested. I said show me in the
regs
and they couldn't. When they said if I agree to a letter of
instruction
in my records that would be removed in 2 years if no other violations
of
this type occurred , I agreed to that.