If you want to do the legwork yourself, you can physically visit the local sub-registrar office in whose jurisdiction your property falls.
: You can physically visit a local Sub-Registrar's office in Mumbai or file a Right to Information (RTI) application to request specific 2001 rates for your zone and CTS (Chain and Triangulation Survey) number. Historical Context: Mumbai 2001 Valuation Examples Ready Reckoner Rate Mumbai 2001 Pdf
: Rates differed for residential (flat/room), commercial (office/shop), and industrial units. If you want to do the legwork yourself,