Question: how to change address in birth certificate in tamilnadu?
Answer: Application form.
Valid birth certificate.
Affidavit from local notary.
Affidavit on a non-judicial stamp paper of minimal about the reason of name change.
Address proof (Voter ID, Driving License etc.) ... 
Aadhaar card.
Aadhaar Card of Parents as per requirement.
Name of the Parent.