You cannot get a home loan without the registration documents. The bank wouldn’t even accept your application form without the registration documents.
Registration documents are one of the primary requirement to process a home loan. Banks do not give loans for unregistered properties. Hence it is mandatory to have registration documents before applying for a home loan.
If the property is under construction, the home loan can be obtained without registration documents. However, it must be registered post possession and a completion certificate is obtained.