Continuing its effort to make Bhubaneswar encroachment-free, the joint eviction squad of the Bhubaneswar Development Authority (BDA), the Bhubaneswar Municipal Corporation (BMC), the General Administration Department, the East Coast Railway and the Commissionerate police on Monday demolished 70 houses erected on the ECoR land at Banafula Basti in the Budha Nagar area under the laxmisagar police station.