Your immigration laws take people from other countries much easier than your Northern neighbours.

What class of tenant do you believe your neighbours would like to see living next door in their class A community.

My neighbour sold his house a week before the new mortgage rules went into effect for 200K over asking and literally a hundred people went through it, and last week my friend put his house on the market (nice house, great area) and only one party made an off at asking price...telling perhaps, but would be interested to hear what realtors are noticing.

Find out what your neighbours problem is and if in fact your tenant is the problem correct the situation or do not renew their lease.

I am an American citizen living in Greece, looking to invest in the US. 

For example - nobody's quite sure what will happen with Greece and portugal (unstable, recession end date unknown), and are mostly certain the USA will someday bounce back (normally stable, temporarily recessed but with high recovery potential).

I initially got started back in march when I came back from Greece.

Tell the neighbour she is welcome to phone the police and file a noise complaint. 

In my opinion, obtaining a minor variance should not be an issue because it would conform with most of your neighbours on the street.Your home is on a fringe flood plane, which should be easier to obtain than a permit in a full flood plain.

Most people are working during the day, so when they get home...kids are gone from the school and you have no neighbours across the road.