I didn’t build this per say. I had a oak base cabinet given to me and decided it would be perfect to conceal our cat litter. This naturally calms the odor and keeps my pesky dogs out of it. The cabinet has a shelf in the back which I used as a guideline to cut a hole in the side. I installed a .3w night light that stays on for the cat to see at any time. The drawer is used for all animal items such as flea and tick drops, tags, leashes, etc. We use the tote next to the box for her food and it also serves as a platform for the cat to enter on the side. I would definitely recommend this to anyone who has a cat. Ten thumbs up.