The LIST Boundary Segment is a straight line, arc, topographic feature, meridian or parallel that is used to build the various polygon datasets derived from the LIST CadArea (Cadastral Area) table within The LIST Cadastral Datamodel. This dataset is not intended to be used independently of LIST Cadastral datasets but may be of use in conjunction with these to ascertain the origin of a line or lines of a high order of accuracy. Boundary Segments may represent the boundaries of any one or a combination of the following polygon datasets derived from the CadArea table: Authority Parcels, Private Parcels, Leases, Licences, Casements, Easements and Reserves Boundary Segments are not classified according to the polygon they have been used to create. A boundary segment may be used to create more than one polygon.

Cadastral information was initially derived from the Tasmanian 1:5,000 orthophoto/cadastral and 1:25,000 topographic/cadastral map series. In compiling these map series, land parcel boundaries were originally plotted from bearing and distance obtained from the available land survey records and fitted to visible occupation using weightings of survey currency, error of close and fit tolerance to obtain the highest possible order of accuracy. Subsequent cadastral information was added by digitising survey diagrams and fitting this data to the surrounding information. In some areas cadastral data has been sourced from Local Government Authorities. Maintenance of the Boundary Segments is by direct entry using co-ordinate geometry and where possible, been fitted to SPM's or defined grid co-ordinates. Adjoining boundaries are moved where necessary to fit to the high accuracy boundaries. Since June 2005, all new subdivision plans have been plotted and fitted to control with a tolerance of within 1 metre or better of true position. Adjoining surveys in most instances have been replotted and fitted at a higher order of accuracy to the new subdivision. Significant work is being undertaken to improve the positional accuracy of the cadastre through replotting from the original survey measurements.

Position Accuracy: The FEAT_FOL (Feature Followed) attribute field provides a single level attribute classification relating to the source of the line. A high accuracy source indicator is held in this field. Full details of the positional accuracy can be obtained from the feature Metadata Pointer (FMP). As at June 2021 44% of all Boundary Segments are now within 1 metre of true position. Of these, 14% of boundaries are at survey accuracy. Attribute Accuracy: It is estimated that not less that 99% of all attributes are correct. Logical Consistency: Boundary Segments are topologically correct and will not include overshoots, dangles, free endpoints, intersections or duplicate overlaying lines. Completeness: Boundary Segments for land parcel boundaries are complete. Some road casements are incomplete within rural areas.