What an EC covers
The EC is generated from the Sub-Registrar's records and shows every deed that was registered against the property during the period you request. That includes ownership transfers and any loan or mortgage charge created on the land.
A 'clean' or nil-encumbrance certificate for a given period means no registered dues or transfers were recorded in that window — a strong signal, though not a complete guarantee.
What an EC does not cover
An EC only reflects documents that were actually registered. Unregistered agreements, oral arrangements, tax arrears, court injunctions and disputes that never reached the registry will not appear.
That is why the EC is a starting point, not the finish line. A legal opinion reads the EC alongside the parent documents and title chain to spot gaps the certificate alone cannot show.
How far back should you search?
For an ordinary purchase, buyers commonly pull an EC covering the last 13 to 30 years to trace a full chain of title. Banks financing the purchase often insist on a minimum period of their own.
Order the EC online through the TN registration portal or request a certified copy. Read every entry and ask the seller to explain any mortgage that has not been released.