Is it mandatory to have a co-applicant ? If yes, who can be my co-applicant ?

It is not mandatory to have a co-applicant but having a co-applicant will increase your eligibility and your chances of getting the home loan sanctioned. If you are an individual, your parents, your spouse or even your major children can be your co-applicant. A co-owner of your property has to be a co-applicant but a co-applicant need not be a co-owner. Non Individual organizations like a partnership firm, an LLP, and a private limited company can also be a co-applicant.