Generally all lot boundaries in strata plans which are not defined by a structure must be defined by their relationship to a structure. This relationship must be a prolongation of a surface or at right angles to that surface. In some circumstances it may be desirable and more efficient to define lot boundaries by the use of bearings and distances. This is only acceptable with the prior approval of NSW LRS.
A surveyor should apply in writing to use survey information on a strata plan to define lot or easement boundaries. Permission will only be granted in cases where it is difficult to define the boundaries in the usual manner. The request should be addressed to the Plan and Title Advisor at firstname.lastname@example.org and should explain the reasons for the request. It is recommended that a copy of the plan be included. If permission is granted, the surveyor will be provided with a reference number which should be added to the surveyor's reference on the plan.