Near Metha Nagar, Kundrathur plots need to get CMDA or DTCP approval?

Hi,

1) Can you please tell me near Metha Nagar, Kundrathur, Chennai plots (already have patta, chitta, adangal) need to get CMDA or DTCP approval before building the home (by taking bank loan)?
2) What would be the process to get the approval?
3) What would be the Fee for the approval?
4) What would be the processing time for the approval?

Thank you in advance