Hi,
Some of the COA approved architecture colleges in Tamil Nadu are:
SRM Engineering College
Rathinam School of Architecture - [RSA]
NIT Trichy
Anna University - [AU]
B.S. Abdur Rahman Crescent Institute of Science & Technology - [BSAU]
Meenakshi College of Engineering
Dr. M.G.R. Educational and Research Institute
Sathyabama Institute of Science and Technology
Excel College of Architecture and Planning
Karpagam Academy of Higher Education - [KAHE]