Apartment in a SEZ Zone

Mr Thomas, First of all you ought to have verified the title/ownership  of property owner when you purchase any immoable property, as far booking of the flat is concerned  in my opinion it is better to stop and ask for refund of the amount and not to proceed further, as you have clearly stated that the flat booked by you falls within the SEZ area, by signing a lease deed for (99) years you cannot become the absolute owner of the property nor you inturn cannot sale the property to any third person, your status shall be as that of a "Lease Holder" for (99) years but you shall not have any right and title to alienate the property to any other person. and last but not the least as far as extension of period of lease is concerned the time specified by you is (99) years, extension arises only when the said period is expired. so do not fall into such trap and be careful. 

In every transaction ie mortgage, alienment, transfer, you have to go for tri-party agreement.after all u r not an ABSOLUTE owner of the property, as SKB stated. follow his advice.