i actually put it together with the help of my 6 y.o. grandson. took me about an hour but i never put things together so am very pleased. my cats love all the levels especially the very top perch. my only complaint is i ordered one with the paws on each level and when it came it was plain. to heavy to send back.. wayfair  did give me a small credit. is worth the money. but it is a big tree  and wide.