Перевод - Турецкий-Английский - Lobby katının park katı olması isteniyor.

Hi kfeto,

"They want the lobby floor to become the parking lot floor."

This sounds weird, since the lobby floor cannot become the parking floor by itself.
I think what you mean is :

"They want to turn/transform the lobby floor into a parking floor"

What do you think?

you're right