IIRC if a building has certain attributes, it doesn't show the gold/wood/supplies of the player. I'm not sure which, but I think towers don't display those attributes because they have an attack. Basically, certain abilities take up the room that would otherwise be used to display them.
[I tried it, and it works. +rep] <- nevermind this.
Edit: I haven't tested it when I said that. Just tried it it still shows the stats.
The reason why I want to hide the stats is because, One player will gain x2 of the normal bounty that the other players get. Because he will need it to defeat the other players(by hiring creeps and heroes) without them knowing its him.
Now if I can't hide the stats the "selected" player would easily get busted by the ammount of gold he has.