Talk to other neighbours and see if this is recent or just because you have a lot of people in and out of your house.

Neighbours can stifle many a creative real estate idea....

The purpose of the court is to deal with this exact type of situation so that individuals do not need to deal with neighbours themselves.

Google street view should give you the neighbour's address or the city's page. 

Is this the tenant or the neighbour? 

The neighbour is ultimately responsible. 

I have some capital for a fix and flip, looking in the Greece/Irondequoit area.  

I've heard different recommendations on what or what not to include.Some people recommend including you business letterhead and so that follows that you identify yourself as an investor and your company name, address, etc.I'm use to yellow letters where you are trying to portray that you're a neighbour down the street interested in their home and not a big bad investor looking to gouge them.

@Ross BowmanUntil about twelve months ago, no one believed the US government could effectively impose a nationwide moratorium on evictions, either.Until FDR forced everyone with in-country gold holdings to sell to the US government in 1933 at a set price, no American citizen believed that they could be forced to give up their depository-held gold against their will.In my personal experience, absolutely no one in Greece in 2014 believed foreign, unelected bureaucrats could keep Greek citizens them from withdrawing their own money from their own Greek bank accounts the next year.You believe Bitcoin is bulletproof because a series of circumstances JUST CAN'T HAPPEN.

But doing so and watching other property owners around making updates is helping the neighbour"hood" go in the right direction.