If you enable ModifyWorld, you can restrict basic abilities that are otherwise vanilla, like placing and destroying blocks (building). A good way to do this is to give your group the permission node Code: - permissions.modifyworld.enable Then give them a negated node (with a - in front of it intentionally) like this which takes away the ability to place certain blocks Code: - -modifyworld.blocks.place.<blockid> This would give them every vanilla ability but those which are negated, which are taken away (YAML permissions files are read top to bottom, so whatever is stated below overrides that which is above). It's a bit confusing to do a simple thing like restrict building, but powerful. If you need any further assistance I can help you.