Hello,

There is a course called Bachelor Of Architecture In Interior Designing . It is  is a 5-year full-time undergraduate course, the minimum eligibility for admission to which is the successful completion of the 10+2 level of education from a recognized educational Board. The course is essentially about interior decoration of a room or building .The average fees for the 5 year course in India is almost between INR 2 and 5 Lacs which varies across institutes. The major entrance exams for this course includes NATA, JEE MAINS, JEE Advanced AAT, BIT SAT, etc. Some of the  top colleges offering this course includes:

1)School Of Planning And Architecture -New Delhi

2)IIT Kharagpur

3)IIT Roorkee

4)NIT- Thiruchirapalli

5)CEPT University

There are several other colleges offering  this course as well.

Hope this helps you.