The party alleged that the agreement signed on October 2007 was "devoid of sound financial reasoning and against the long-term interests of the people of Arunachal."
The lease agreement, for a period of 60 years, was signed during the tenure of Dorjee Khandu as chief minister.
In a representation to Chief Minister Nabam Tuki, state NCP President Kahfa Bengia objected to what he said was "throwaway" upfront amount of Rs 10.01 crore which was given for the lease.
Under the agreement, the developer, if it fails to hand over the structure within the stipulated time, is liable to provide alternative premises in the same area free of cost for temporary use of the assignors.
While urging the Arunachal Pradesh Industrial Development and Finance Corporation, the signatory of the agreement on behalf of the state government, to explain how and where the amount was used, Bengia said if the defaulter company continued to befool the government, the NCP would seek a vigilance inquiry from the Centre, as well as a CBI probe in the matter.