It's not necessarily hidden. I only gave you the shortcut to get to it. It's the Timers tab, and it shows you the timer for most things in the game. In this game, you kind of have to figure things out as you play, something that is frustrating but "encourages community". TBH if you haven't played long enough to figure this sorta stuff out, do you really need a house? (sarcasm of course).

But yeah, it's a very common and frequently used feature for most players.