There are activities going on at where Emerald is supposed to be.
You're right, no signboard, so could'nt confirm if Emerald had actually started work.
Based on what is going on, it can be Emerald. No signboard, it's either the contractor's signboard is not ready, or to be put up at a later date. ( it's my guess )
It can also be infrastructure work. In newly cleared land, sometimes sewers, drainage systems may not be there, so it has to be constructed.
In Malaysia you'll see certain high-rise building almost completed but has to stall because no sewers and drainage systems are planned or available.
Anyway, managed to take some pictures for viewing.