Amendments to the Tamil Nadu Stamp (Constitution of Valuation Committee for Estimation, Publication and Revision of Market Value Guidelines of Properties) Rules, 2010

What the notification changes

The Commercial Taxes and Registration Department notification, issued through Government Order, G.O. Ms. No. 89, Commercial Taxes and Registration (J1), dated 23 June 2025, amends the Tamil Nadu rules governing property market value guidelines. It was published as No. SRO A-17(b)/2025 in the Tamil Nadu Government Gazette Extraordinary.

The changes cover State-level guideline value estimation and introduce a method for valuing certain residential properties through a single composite value.

New property valuation terms

The amended rules add the following definitions:

• “Composite value” is the market value of apartments, flats, villas, villaments or row houses, including the undivided share of land. It is calculated using the super built-up area.
• “Immovable property” means property as defined under the Registration Act, 1908.
• “Super built-up area” includes the built-up area and common areas such as lifts and staircases.

Guideline value revision process

The amended rules provide for State-level estimation of market value guidelines in line with increases or decreases in the market value of each survey number, subdivision number, street or road, as applicable.

Key procedural changes include:

• If no general revision occurred in the preceding year, the Valuation Committee may record reasons and instruct that a general revision be carried out at any time during the calendar year.
• The revision may be brought into effect from a specified date.
• Valuation sub-committees must publish estimated or proposed market value guidelines when they receive them.
• Valuation sub-committees may meet as often as required to consider the proposed values.
• The existing procedures for estimating market value guidelines also apply to the estimation or revision of composite values.

Factors for apartment and similar property values

For apartments, flats, villas, villaments and row houses covered by the Tamil Nadu Apartments Ownership Act, 2022, composite valuation may consider:

• Amenities provided.
• Proximity to markets, bus stands, railway stations and similar locations.
• Width of the road on which the property is situated.
• Quality of construction.
• Other special features affecting property valuation.

The amendments are particularly relevant to buyers, owners and professionals dealing with these residential property types because the guideline valuation can include both the structure and the undivided share of land.