Miscellaneous bug fixxesSuggestion
Been waiting for a new maintainer for this plugin, got a few bug fixxes laying around on my own version of this plugin with some lesser known bug fixxes, one for the Foundation check and the Building privilige check, I replaced these 2 functions with my own versions as follows, the buildingpriv check now also checks for clan members if somebody isn't authorized, works as normal without clan plugin:

BuildingPriv check (mostly based on Rust's function to get building priv) didn't include PluginReference to BuildingOwners, but that's just one line anyway:
https://pastebin.com/1KCSaxgV

Foundation check (instead of vis.entities uses a raycast from above, works faster and actually works, instead of Vis.Entities which didn't work inside a foundation anymore):
https://pastebin.com/Yt4wj4Pq
I'll take a look at this tonight or worst case this weekend.  Thanks!