There are many college in tamilnadu .
In nata you have you eligible student should have passed 10+2 level or equivalent from a recognized board. OR Candidates who have passed 10+3 Diploma Examination with Mathematics as compulsory subject.

The top colleges are
SRM University Chennai - SRM Institute of Science and Technology

Sathyabama University - Sathyabama Institute of Science and Technology

HITS Chennai - Hindustan Institute of Technology and Science

Dr MGR Educational and Research Institute, Chennai

Bharath Institute of Higher Education and Research, Chennai

To see more college in different entrance exam you can visit the the link

https://engineering.careers360.com/colleges/list-of-b-arch-colleges-in-tamil-nadu

Thank you . I hope this answer helps you.

JNEC Aurangabad

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