~ Are there any power stations nearby?~ Environmental hazards?
Any factories, dumps, bus stations, airports, apartment complexes?
Think through any scenarios in which you would feel uncomfortable.
Scout out the area closely.
~ Air Quality:
Do you smell any peculiar odors?
Is there noticeable pollution in the area such as smoke, soot,
dust, pesticides?
~ What about trees? Will many need to be removed to build?
Do you wish to protect them from being destroyed?
Seriously consider consulting with an arborist to give you guidance on preservation, protection and disease prevention.
~ Is this in an area know for a radon problem?
See this
page on radon gas
for more information.