Can i sell a property without blue print, sanction

Have a residential area of 1540 sq ft area which is collector NA. The Plot was purchased by the initial buyer from a Cooperative Society between the year 1981 to 1988 (the documents of which is missing/not available with anyone). The person who purchased is no more and no documents can be traced from anywhere Then the property was purchased by a person in the year 1988 (the sale deed for the same is available) The person who purchased build a house in 750 sq ft area without blue print, without sanction or guntewari in the year 1988 during the gram panchayat era. I purchased this house from him in the year 1999. Today I am unable to sell the property due the below mentioned missing documents: - Blue print of the house - Sanction letter from Gram Panchayat/Corporation - Sale deed of first buyer who purchased the plot in the year 1981 from the cooperative society Kindly let me know from where can I get the duplicate copy of the documents Can I sell this property and can a buyer get a loan from Nationalised Bank for the property.