Always check historical ownership record of the property. Never skip or underestimate this step, because a previous defect in property ownership will always remain there and possibly expose you to contesting claims on the property. A property may not be on the name of the owner from whom you are purchasing or there might be disputes pending on the property.
You should always ensure that the seller has the title and possession of the property as well as the right to transfer the property. If the property is a constructed house or building, check if the building adheres to relevant municipal/planning authority requirements. Ensure that there are no tenants and get a declaration that the property was purchased from the seller’s funds and is not mortgaged. Check whether all dues such as property tax, society, water and electricity bills, etc. have been paid in full. Make sure to take possession of all relevant documents and the original title document (for example allotment letter, completion certificate, occupation certificate and all other documents, etc.).
There are many cases where the seller mortgaged the property but did not inform the buyer about it. In order to avoid any fraud, you must ask the original copy of the title document (‘Registry’, allotment letter etc.). The owner will not have it if the property is mortgaged.