pfft- DayZ? More like LayZ, looks rushed and boring, if you play the game you should notice that basically every building is replicated, meaning there is no one independent building. To make it more clear, no special details, that way too the brickcount is lower.
You don't need that much builders either, applications are dumb too.
Now before you tell me something stupid like,
"why don't u biuld it!!"
"zomg you don't know anything!"
"you probablaly never plaid dayzee!!"
I'll tell you now, I've done this myself and am on the verge of completion. Of course it's on the verge, but I can't finish it, my modeler randomly backed out, scripts are all done though. Hunger, thirst, blood, item spawning, and some other things here and there. All I need is a damn decent modeler...
Anyhow, good luck.
edit: crossed something out