Please provide list of all documents a builder has to provide , in case where a plot has been purchased from him as well he constructed the house.

Q: A plot was purchased, all money paid. It was registered with talati office,
A house construction agreement was signed .Loan was taken from Bank. House construction completed. Bank paid all the money. House was occupied for residence & continue to live (PAST SIX YEARS).House Tax, Property Tax (on House *& Plot) paid regularly till date by occupant. MSEB & BSNL Landline bills are paid (with this address) regularly till date. Builder has provided Property Card.
Builder was asked to provide Completion Certificate, commencement Certificate but he is not providing, he says under process but when contacted Architector , no documets are submitted to PCMC.

I would like to know how to get these documents as well what all other legal documents are to be taken from builder.