Conversion of tenancy to ownership

Tenants in a 65-year-old Kolkata building are seeking to convert their tenancy to ownership at a price significantly lower than the circle rate. They've encountered difficulties with the Inspector General of Registration (IGR) and are concerned about potential IT notices if they proceed with the registry. While tenants may not need to declare this in their IT returns, the landlord might face scrutiny regarding old tenant encroachments. The current agreement involves the landlord selling the property to the tenants, with a discount offered due to their long tenancy.