When we purchased our house in 2000 it had a detached one-car garage that seemed about to tip over. We were never able to park in it or store anything in it, but the raccoons loved it!
After about a year and a half we finally decided to have it removed. Originally we were going to try to do it ourselves, but instead we ended up hiring someone to come and remove it. It only took them about 30 minutes from the time they arrived until they were done!