I have 10000 sft commercial land in Trivandrum worth about 12 crores. A builder has expressed interest in constructing a commercial cum office/residential building there. What share should I ask if he is able to construct totally 40000 sft, and what share if he is able to construct only 30000 sft, since it will depend on the approval he gets. What are the other precautions to be taken in the JV agreement to avoid capital gains tax payment before the building is completed etc? Please advise since I am new to Joint Venture.