Hi Nuclear. I took their $9,888 package for BTO also. So far, no hidden costs, Peter was clear to indictate clearly the terms n conditions. Best is no 7% GST. But we added quite a lot more items like the additional partition room with White Brick effect wall, PD door ( we needed an additional Study Room ) Also added a Bookcase and False Celling As of now with the additions, my reno cost is about $11K. My ID also told me to set aside the budget for buying Lights/ Kitchen appliances- hood & Hob / oven/ curtain etc Also approx $2k for electric works... From what i see, he is very upfront about all the costs. Havent get any notice yet from HDB about keys collection, Why so long? Can't wait!! Hop e to start reno asap, will update about workmanship after reno starts.