How do I fix OSX Maps having the wrong location (Next Door) On OSX Maps, when I use my "Current Location" always resolves to the house next door. 

This is easy enough to override, by never using my current location, but is there a way to make it know the real location of my Mac? Like reset Apples DB of where my Wifi is?
There's not really a way of doing this. Apple does use croud-sourced data obtained from iPhones though: get an iPhone and let it get its location. Using GPS the iPhone will obtain an actual location, and as it can scan for Wi-Fi the data can be combined.