This plugin works great.  However, I found a major problem. 
If no TC is placed, the 'Building' entity limiters do not work. No matter what limits you put on, it will bypass unless there is a TC placed.
So players can build to their hearts content, then place a TC and they will NOT be limited.  Want to add on? Destroy the TC, place whatever you want, then re-place TC.  Not sure how to solve it, other than forcing a TC placement after X foundations or something similar.  I love this plugin - just wanted to point that out. Thank you!  

Try  https://umod.org/plugins/foundation-limit , I use PlayerRankings @Ankawi and grant block amount permissions for each rank, so a new player  gets the *default amount of 20 foundations then they scale upwards to highest rank. it stops players joining and building huge bases then departing.
BTW" it counts triangle foundations as foundations count even though they are shown seperatly

pookins

Try  https://umod.org/plugins/foundation-limit , I use PlayerRankings @Ankawi and grant block amount permissions for each rank, so a new player  gets the *default amount of 20 foundations then they scale upwards to highest rank. it stops players joining and building huge bases then departing.
BTW" it counts triangle foundations as foundations count even though they are shown seperatly

thank you!

If no TC is placed, the 'Building' entity limiters do not work.

Unfortunatly thats how it works. Maybe in future on placing TC it will remove objects that overriding limit

@codepimp1234 Try adding a global limit per-player as well too then? That way they still have a hard cap without a TC being placed. They could still get around the per-building limit, but it would still cap them at some point.