This has by far proven to be the best pet purchase Ive ever made! The enclosure assembles easily and I was able to accomplish it on my own in a short time. However it would go more smoothly and certainly quickly if you had two people. I constructed a bridge from a window in my home to this enclosure using simple two-by-fours. And the cats absolutely love it! Theyre happy to stay outside all day and all night, and Im absolutely thrilled that theyre getting to enjoy the great outdoors while remaining safe and not digging up the neighbors garden.