Im a carpenter so wasn't difficult to build, there's plenty of info online. I had the materials and time as we were off for lockdown and was looking for something to get the kids off the Xbox. It took a year and half for our first owls though. I'm thinking of putting a camera in the box this year. Was great watching them get bigger. Shit me up on a few morning as I would walk in and one would be sitting on a bench dead still and I wouldn't see it till I was right up to it.