occupancy certificate is required only for multistoried houses, only
if it has more than three floors. otherwise not
needed.no other
certificate needed.
reg tax you can visit the bbmp website for details. actual tax depends
upon the location and constructed area. i stay in basaveswaranagar and
built 1650 sq ft. tax is bt 5000. just to give you an idea.
all the best .
chandramouli