Aftab Alam, J.

1. The sole petitioner is the owner of the building standing on a piece of land, 1748 sq. ft. in area, being part of plot No.644 within Ward No.2 of the Patna municipal Corporation and situate at frazer Road, Patna. The building which is used for running a shop under the name of d. Lal and Sons has its frontage on the Frazer Road and adjacent north to it there is a narrow lane starting from Frazer Road and running towards east for 150 yards before coming to a dead end.

2. According to the petitioners case after purchasing the land in 1957, the vendee got the building plan sanctioned by the Patna Municipal Corporation in 1957 and also obtained the necessary permission for construction from the Patna Improvement Trust. Copies of the relevant extracts from the sanction order granted by the Corporation and the permission for construction given by the Patna Improvement Trust are enclosed as Annexures 2 and 3. It is asserted in the writ petition that the construction of the building was started in 1958 and it was completed in 1959 in accordance with the sanctioned plan.

3. Pursuant to the directions issued by this Court, the Patna Regional Dev. Authority (the Autho