building a kitchen island How can I build a kitchen island with seating?
Buy a large butcher block top, seal it.
For the base, I would a kitchen cabinet(s) base cabinets and put a hardwood plywood back on them, if going with a stain-grade finish.
The cabinet will have framing made for screwing the top down from underneath.
If you want a less deep cabinet, you would try cabinet “uppers” and build a toe kick out of treated 2x4’s.
Here's a tutorial that might be helpful: https://www.youtube.com/watch?v=Hf0XYxcG03g
We used a couple of cabinets but then built out one side for seating. Here is the blog post about it. https://michellejdesigns.com/our-kitchen-remodel-part-2/
I built one for my kitchen and wrote a post about it that might help you - https://chascrazycreations.com/kitchen-island-storage-self-hack/