Hello Kirtijoshi,

Following are the list of colleges that offer B.Arch in Mumbai:

• Sir. J. J. College of Architecture
• Rachana Sansad'S Academy of Architecture
• Kamla Raheja Vidyanidhi Institute For Architecture And Environmental Studies
• Rizvi College of Architecture
• L.S. Raheja School of Architecture
• Pillai'S College of Architecture
• Padmashree Dr. D. Y. Patil College of Architecture
• Dr.Baliram Hiray College of Architecture
• Balwant Sheth School of Architecture
• IES College of Architecture 
• Asmita College of Architecture

Hope this was useful.

Good Luck!!!