I don't have answers for the technical and/or zoning portions of your
questions because I don't have sufficient information... I gather the
runway is in the planning stage so it is possible that anticipation is worse
than reality.. Discussion with the neighbor/pilot is the best method to
arrive at a solution that all can live with..

Consider that if his property border is 1500 feet from your buildings and
given that he will likely be airborne well before reaching the boundary of
his property, it is likely that the departing airplanes can turn enough to
avoid flying directly over your head...

As a person who also owns acreage and lives a quarter mile off the road, I
appreciate not hearing civilization too loudly, also... However, it is
rarely possible in this modern world to avoid noise... The farmers who work
the adjacent farms can be heard for well over a mile when their turbocharged
tractors, combines, etc., are working... The diesel pump for the half mile
long, circle irrigation system on the next section to my south can be heard
clearly at night in the summer thump thump thump all night long The
neighbor 3/4 of a mile to my southeast has music parties in the summer,
outside, and the banging drums and wailing horns are amazingly loud for the
distance...

Anyway, good luck with settling this between you and your neighbor as it is
tough living when there is animosity between neighbors...
denny

"just an average Farlang..." Thai-no-