The new agreement enables the group, in which the Walt Disney Company holds a 40pc stake, to continue building on the site in Marne-la-Vallée outside of Paris for a further 13 years.
The news of more development to the site follows an announcement earlier this year that the resort was badly hit by the economic downturn. Attendance slid 8pc to 6.5m in the first half of the year to the end of March, leaving it with a net loss of 114m (£95m).
In the latest deal with the French government, the deadline by which Euro Disney would have to develop the land has been extended from 2017 to 2030, to provide the time needed to construct a third theme park.
Philippe Gas, the chief executive of Euro Disney, said one idea for a third park is "a superheroes park" following the acquisition of Marvel by Disney - although the construction of a third park is a long-term vision. Mr Gas said there is a possibility that a decision to build a third park could come as late as 2020, although it may come earlier if planned work on the Disney Studios park is completed.
The French government originally gave consent for Disneyland Paris to be built on the condition that Disney would only buy pockets of land in stages once previous plots have been developed. It was France's first regional development public-private partnership.
Euro Disney said earlier this year that it had made 47m from the sale of land to French commercial property group Klepierre and French insurer AXA.
Under the new agreement, French authorities have simultaneously agreed to increase the number of hectares available for Euro Disney to develop, from 1,943 to 2,230.
