Yours is Block A low floor?
Based on the schedule, unlikely the progress reached stage 2(d):


1. Immediately upon the signing of this Agreement 10%
2. Within twenty one (21) working days after receipt by the Purchaser of the Vendor's written notice of the completion of:-   
  (a) the work below ground level including piling and foundation of the said Building comprising the said Parcel 10%
  (b) the reinforced concrete framework and floor slab of the said Parcel 15%
  © the walls of the said Parcel with door and window frames placed in position 10%
  (d) the roofing/ceiling,electrical wiring, plumbing (without fittings), gas piping (if any)and internal telephone trunking and cabling to the said Parcel 10%

Dec2015 for block A & B? end 2016 block C & D?