We're not a non-profit in the legal sense. We're a government agency the same as the military or CIA and such. We're actually in the category the FDIC and Federal Bank are in since we're self funded.
That being said you aren't allowed to go up driveways period unless there is a hardship delivery OR the delivery point is the front door. Look it up. We cannot deviate from our routes and a driveway is a deviation. I was shocked finding this out. This also applies to apartment front doors, too, apparently from my research.