What tier 3 building gives best plunder?

Guild lv4
Or if u mean troop buildings, the defence building.

Test

 

War cathedral I think

 

Troop, all defensive heavy builds give a better plunder payout.

At T-3 stick to lvl 4 guilds because Stronghold of Shadows hurts plunder.

 

I thought SoS unlocked with t4? Oh well guilds lv4 are still better

 

Sub Factory gives high attack.
War Aviary gives an extra 2 hits.
Sum Circle gives an extra 5% plunder.

 

^ Sum Circle is the stronger identical version of War Aviary, and it's T4.

 

Depends, but probably summoning circle if you want more plunder.