Just built it and it seems sturdy, much more than other cat trees I’ve had. I love that there’s washers for the tallest platform because I had an issue with a previous cheap cat tree with a platform becoming very wobbly over time. I also love that there’s an extra wide platform, the platforms have extra cozy cushion, and that the condos are double sized. I’m sure my cats will cuddle together onin them! Only complaint so far is that one of the bells connected to a ball doesn’t jingle because it doesn’t have a ball inside the outer shell.