I've ben out that way a few times and know the basic structure. The problem is, your house is acting like it's own subwoofer. The windows are the ports, the four walls are the sides, and you & your equipment is just stuffing.
Stuffing the port on a sub muffles the 'chugging' but increases the db's. By closing all openings, you are doing the same thing.
Get a db meter and measure from his drive way, without rebuilding our home, your gonna half to defend your levels, with facts,'cause it's gonna go to court.