you ought to have applied to collector for conversion of land into NA before carrying on 1500 square feet construction
2) then applied for sanction of building plan from gram panchayat
3) Under section 44 of the Maharashtra Land Revenue Code 1966, before carrying out any development on the land, an eligible person has to apply to the collector for the permission to convert the use of agricultural land for any non-agricultural purpose, or to change the use of land from one non-agricultural purpose to another non-agricultural purpose.