My Grandpa had a runway in his backyard. Not an airpark though, just my Granparents. Had twelve acres with the runway, a hanger and an outbuilding behind the hanger for parts, etc. Kept his Waco's, a Chief and a Monoprep there. Had to keep his Howard at another strip with a longer runway. Anyway, it was neat and all, but he was sure glad when I got long enough to reach the pedals on the tractor (which I did when I was 10). I logged LOTS of time on an Allis Chalmers before upgrading and getting typed on a new John Deere. Point is, having a runway in the backyard can mean LOTS of mowing - it almost never ends. I am not sure how the airparks accomplish this but I think I would pass on the idea of living at an airpark that required me to mow.