On 11 October 2021, the Real Property Amendment (Certificates of Title) Act 2021 commenced, which abolished the Certificates of Title (CTs) and the control of the right to deal (CoRD) framework. All existing CTs have been cancelled and CTs will no longer be issued. Existing CTs will not need to be produced, and CoRD holder consent will not be required, for a dealing or plan to be registered. All existing Guidelines subject to this change are currently being reviewed and will be updated to reflect these changes. For further information regarding the abolition of CTs, please see https://www.registrargeneral.nsw.gov.au/property-and-conveyancing/eConveyancing/abolition-of-certificates-of-title

Stratum boundaries

Stratum subdivisions are used to create stratum lots for disposal where vertical subdivision alone will not meet the requirements of the proprietor and the new lots are needed to be limited (either as to whole or part) in height and/or depth e.g.

  • Railway tunnels
  • Underground railway stations and associated shopping complexes
  • Leases of part of the airspace above a road for access between buildings
  • Subdivision of a building into stratum lots for separate use and/or ownership

Note  For deposited plans defining lengthy road, rail tunnels, etc see Road and rail tunnel developments page.

Definitions of terms used in defining stratum boundaries.


Definition of stratum boundaries by planes the height and depth of which must be related to AHD or other datum approved by the Surveyor General.


Examples of stratum boundaries diagrams of elevations and cross sections.


Stratum subdivision of a building or part of a building where shopping centres, commercial offices and residential home units occupy separate floors within the one building necessitates the preparation of a plan of stratum subdivision.


For more information for Plans and Titling contact plan-info@nswlrs.com.au


Go to NSW Legislation website www.legislation.nsw.gov.au/