Dear Aspirant,

There are colleges who offer part time Diploma in Civil Engineering in Mumbai which is a 4 year course. Here's a list of a few of them:

• Shree Bhagubhai Mafatlal Polytechnic
• SBM Polytechnic, Mumbai
• K. J. Somaiya Polytechnic
• M.H Saboo Siddik Polytechnic

I am providing you a link which contains all the information about M.H Saboo Siddik Polytechnic college

https://www.careers360.com/colleges/mh-saboo-siddik-polytechnic-mumbai/diploma-in-civil-engineering-part-time-course

Hope this Helps !