Hello,
The best B. Des colleges in Mumbai are listed below :

• Industrial Design Centre, Indian Institute of Technology, Mumbai
• School of Design SVKMs Narsee Monjee Institute of Management Studies, Mumbai ..

For furthermore information please go through the link given below to get the detailed information of the colleges :

• https://design.careers360.com/colleges/list-of-bdes-colleges-in-mumbai

I hope this would help you. For further queries please feel free to write me down in the comment box.