Hi pradeep. As you have completed your 12th with Commerce stream and want to join the integer design course in India, so let me tell you that there are a number of colleges in India that govern the interior design course and as per your question I am providing you the list of some college. So you can find perfect college for yourself.

Colleges:

School of Planning and Architecture, Bhopal (Madhya Pradesh)
1st Floor, Sports Complex, MANIT , Bhopal (Bhopal Dist.) - 462051

Cubatic Interior Designing College, Edappal, Malappuram (Kerala)
4th Floor, Amana Mall, Thrissur Road , Malappuram (Malappuram Dist.) - 676505

Sambhram Rathi School of Design (SRSD), Bangalore (Karnataka)
28,1st main road, Jayamahal , Bangalore (Bengaluru Dist.) - 560046

Maharana Pratap School of Fashion and Media, Kanpur (Uttar Pradesh)
Kothi, Mandhana , Kanpur (Kanpur Dist.) - 208002‎

ACN College of Polytechnic, Aligarh (Uttar Pradesh)
ACN City, Kasimpur Power House Road , Aligarh (Aligarh Dist.) - 201002

Shree Ramkrishna Institute of Science and Technology, Kolkata (West Bengal)
Dakshin Gobindapur, PS- Sonarpur , Kolkata (Kolkata Dist.) - 700145

College of Architecture and Centre for Design, Pune (Maharashtra)
Udhoji Maratha Boarding Campus, Off Gangapur Road , Pune (Pune Dist.) - 422013

SD Polytechnic, Muzaffar Nagar (Uttar Pradesh)
Near Gulshan Chemicals, Jansath Road , Muzaffar Nagar (Muzaffarnagar Dist.) - 251001


Government Polytechnic for Women Sirsa, Sirsa (Haryana)
Rania Road , Sirsa (Sirsa Dist.) - 125055

MD College of Polytechnic, Panipat (Haryana)
Sanoli Road, Chhajpur , Panipat (Panipat Dist.) - 132104

BrainZ, Ahmedabad (Gujarat)
A-202, Himalaya Arcade, Opp. Vastrapur Lake. Nr. Bharat Petrol Pump, Vastrapur , Ahmedabad (Ahmedabad Dist.) – 380054