Updated 27 October 2026. Below: what G.O. 131 changed, what the December 2025 set-off order (G.O. 166) fixed, the joint-development question raised this month, and practical steps for a landowner signing a JDA and for a buyer of a landowner-share flat in Chennai.

What did G.O. 131 change in 2023?

Before December 2023, a flat buyer in Tamil Nadu usually bought the undivided share of land (UDS) through a sale deed and the building through a separately registered construction agreement, with duty on each. G.O.(Ms) No. 131 of the Commercial Taxes and Registration Department, dated 1 December 2023, moved the first sale of apartments, flats and villas to a single composite deed with duty on the combined value of land and building (Verified.RealEstate; Fox Mandal). The government also notified reduced first-sale rates in value bands up to ₹50 lakh and from ₹50 lakh to ₹3 crore (Verified.RealEstate). Check the current rate for your band with the sub-registrar or our stamp duty page before you budget.

What did G.O. 166 (December 2025) fix?

Buyers who had registered a construction agreement before the change and then had to register a composite deed were being charged twice for the same building. G.O.(Ms) No. 166, dated 19 December 2025, provides that the duty and the registration fee on the composite first-sale deed are to be charged after deducting the duty and fee already paid on the construction agreement for the same superstructure (Tamil Nadu Government Gazette Extraordinary No. 848, 19 December 2025). The set-off applies only where the composite deed is registered on or after 1 December 2023 and the construction agreement was registered on or before 30 November 2023 (Gazette).

The joint-development question raised in October 2026

  • The claim: G.O. 131 combined land and building value for the first sale of apartments and villas, but does not clearly cover commercial, IT park or industrial buildings, nor define 'first sale' (Urban Acres, 15 October 2026).
  • The developers' argument: when a landowner receives or passes on the agreed share of built space under a joint development agreement, that is the performance of an earlier contract, not a new sale, so the composite-value method should not apply automatically (Urban Acres).
  • The practice: sub-registrar offices are reported to apply the order inconsistently; for about 20 years, comparable cases had been valued on land value alone (Urban Acres).
  • The ask: a circular confirming that the combined-value method applies to first sales of residential and commercial units but not automatically to land-share transfers under a JDA (Urban Acres). The government has not issued one (Urban Acres).

Why it matters to a Chennai landowner signing a JDA

Joint development is common in Chennai's built-up localities: the landowner gives the plot, the developer builds, and the landowner keeps a share of flats. If the stamp duty on the documents that give effect to that share is computed on land plus building rather than land alone, the cost of the deal rises, and someone has to bear it. Until a circular settles the point:

  • Put it in writing: the JDA should state who pays stamp duty and registration fees on each document, including any deed that transfers the landowner's share, and what happens if the sub-registrar values it on the composite basis.
  • Get a pre-registration view: ask a conveyancing lawyer to discuss the draft with the jurisdictional sub-registrar's office before execution, since practice varies by office (Urban Acres).
  • Keep the paper trail: retain the registered JDA, the general power of attorney and every allotment letter; they show the share flowed from the earlier contract.

Buying a landowner-share flat: what to check

  • Ask whether your purchase is the first sale of that unit. If the landowner is selling a share flat, the deed may be treated as a first sale on composite value; ask the lawyer to confirm the expected duty before you agree the price.
  • Confirm the flat is listed in the landowner's allocation in the registered JDA or a supplementary agreement, and that the developer acknowledges it.
  • Check that the project is TNRERA-registered and that the landowner's units are shown as such where the registration requires it.
  • If you registered a construction agreement before 1 December 2023 and are now registering the sale, claim the G.O. 166 set-off at the sub-registrar with proof of the earlier payment (Gazette, 19 December 2025; Verified.RealEstate).

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