Reliance would hold 90 percent stake in the joint venture company, while HSIIDC would retian the remaining stake.
RIL would have two directors in the board of the newly formed entity, while HSIIDC would appoint one.
The capital cost of the SEZ might escalate up to Rs.40,000 crores, sources added.
RIL devices to establish theme parks and entertainment centres for attracting tourists and therefore may secure tie-ups with universal giants like Disney, Time Warner or Universal, sources added.