Tamil Nadu Sub-Registrar Offices

What is a Sub-Registrar Office, and why does it matter?

A Sub-Registrar Office (SRO) is the field unit of the Tamil Nadu Registration Department where every property document — sale deed, gift deed, mortgage, partition, settlement, lease — is officially registered under the Indian Registration Act, 1908. Each SRO has a defined territorial jurisdiction, measured at the village level. If a property sits in a village that falls under a particular SRO, the registration of any deed for that property must happen at that SRO. There is no choice in the matter; the village dictates the SRO.

The 11-zone hierarchy

Tamil Nadu's 595 SROs are organised into 11 registration zones: Chennai, Chengalpattu, Coimbatore, Cuddalore, Madurai, Ramanathapuram, Salem, Tanjore, Trichy, Tirunelveli, and Vellore. Each zone is supervised by a Deputy Inspector General of Registration (DIG). Zones do not always map cleanly to revenue districts — for example, the Ambattur SRO sits in Tiruvallur revenue district, but administratively it is part of the Chennai zone. This split between revenue geography and registration geography is the most common source of confusion when teams try to find their SRO from a postal address alone.

How to identify the SRO for your property

There are three reliable ways to find the correct SRO:

1. Look up your village in this directory. Open the zone that covers your district, then drill into individual SROs to see their full village list. Every property in that village is anchored to that SRO.
2. Use the TNREGINET Know Your Jurisdiction tool. The official portal lets you search by street or village name and returns the SRO, the registration district, and the supervising DRO/DIG. Useful for edge cases where the village name has multiple spellings.
3. Run an EC search by revenue village. The EC system supports a revenue village mode (no SRO selection needed), which is the simplest path when you have the revenue village ID but are unsure which registration village it maps to.

Why the right SRO matters

• Registration jurisdiction. A document presented at the wrong SRO will be returned. The Registration Act requires deeds to be registered at the SRO with jurisdiction over where the property is situated.
• Encumbrance Certificate retrieval. ECs are scoped to a registration village under a specific SRO. Searching the wrong SRO returns an empty result, not an error — easy to mistake for a clean title.
• Guideline value lookup. The TNREGINET portal stores street and survey-number guideline rates against the SRO + registration village combination. The same physical road can have different rates depending on which SRO you query.

Common pitfalls — read before you file

• Revenue village ≠ Registration village. TNREGINET runs two separate village databases: one for revenue records (used by the EC system in revenue mode) and one for registration (used for guideline value and traditional EC search). The same physical settlement can have different IDs and slightly different spellings in each. Roughly 7% of Tamil Nadu villages show low-confidence automated matches between the two systems and need manual confirmation.
• Bifurcated villages. When a village splits administratively (for example, Vayalanallur A and Vayalanallur B), one half may stay with the original SRO while the other moves to a new SRO. Always confirm which half your survey number sits in.
• Tamil transliteration variants. Names like Senkuntram / Sengundram / Chenkundram are the same village across English transliterations. The portal's autosuggest may lead you to the wrong entry — verify by survey number, not name alone.
• Historical SRO transfers. Villages occasionally move between SROs through gazetted notifications. A pre-2020 EC may sit under a different SRO than the current one. The TNREGINET back-office still serves the old SRO's records — you have to know to ask.

Sources: Tamil Nadu Registration Department, tnreginet.gov.in. Last verified by Proquiro: April 2026.

Browse SROs A–Z

Jump to any letter to see every Tamil Nadu SRO whose name starts with it.