Block Blocks

WorldGuard works fine to me (@1.10.2) to block specific blocks / entities.
Just follow the wiki https://worldguard.enginehub.org/en/latest/build-perms/

 

If you're still having an issue, please provide us with the configuration and version you're using.

 

Simple custom plugin Just check when a player places one of those blocks, if they have permission to place it, if not cancel it 60 lines, my guess?

 

EssentialsX has a feature like that.

Code (Text):

#which blocks should people be prevented from placing?
placement: 10,11,46,327

Under anti-build.

 

Here you go: https://www.spigotmc.org/resources/blockchanger-remove-blocks.3665/