I'm actually not concerned about any damage to my neighbors house. The frog is so lightweight that it couldn't make a dent in anything although I guess it could scratch a car. My neighbors also think it's a hoot when I fly and are generally watching as I cruise around. The Frog is truly a backyard flyer and thats where I fly it at. Now the Ultimate is a different story!! It's very light but is also pretty fast and has a much greater potential for crashing as it's a 3-d craft. About the only time I ever crashed the Frog was when I was doing something I shouldn't have which unfortunatly for it is quite often!!!