I managed to speak to the Sim Lian person-in-charge of Waterview.
[Shirley Koh
[email protected] Tel: 63036163]
She says we can inform them early regarding the modification works (no time line as to how early, but she says there is a cut-off, suggest to contact her again closer to completion).
They will try their best to accomodate our requests. (e.g. I planning to do my own marble flooring, she ask me to check with the reno contractor how thick will the marble be so that they can plan the flooring height for bedroom and kitchen accordingly.)
According to them the detailed floor plan not ready yet. We can try requesting again say next year.
The piling work should start around after Chinese New Year.
Cheers!