The presence of the Catholic Church in Basti was made known with the arrival of Fr.Atul Muriankary, of the diocese of Varanasi in 1965, who stayed in a rented house, followed by Fr Sebastian Sequeira, of the same diocese in 1974.
The present Mission was started in 1979 also in a rented house, and St. Basil's Primary School was started in January 1984. The Priest house in Basti was blessed on 3 July, 1986 on a piece of land purchased at Katra. A year after this Rt. Rev Bishop Dominic Kokkat CST handed over this Mission to the CST Fathers and declared the priest house an Ashram naming it Basil Bhavan. The School was shifted from the rented house to the new building at Kherighat in 1989. The land was purchased and the building for the school was constructed owing to the munificent contribution of St. Konrad Mission Council, Germany through the intervention of the then Mission Secretary Fr. George Kalladanthiyil CST.
For the effective organization and implementation of Social animation and the development activities of the Province DISA (Development Initiatives by Social Animation) a charitable society was registered and its office is functioning in Basil Bhavan. This organization has undertaken integrated community development and development programmes in 60 selected villages in two blocks of Basti district. Formation of self help groups for self reliance, association of women for their empowerment, Balwadies for creating interest in children for regular schooling and other community based programmes are being implemented by DISA.