This is how the builders will put pressure on the buyers after which based on the possession of flats they will cut sorry figure to the authorities stating that they are unable to complete the incomplete work in the construction and they will insist the authorities to issue completion certificate or OC. The corrupt officials in the department will utilise the weakness and demand huge amount to grant sanction at a later stage which will again fall n the head of the buyers who will be helpless at that time than to pay whatever demanded because they are in dire need of all the service facilities. If you dont put pressure on the builder at this moment then you people may not be able to get the OC which is very much essential for provision of all basic amenities namely Water supply and all other allied services, All the buyers should put a combine fight for this. Dont accept the builder's proposal or you may sign them with objections pointing out the incomplete works by making a list of it including procuring the OC. To get the Environmental clearance certificate the builder has to comply with the necessary formalities, the buyer has no role to play in it.