SIO Survey Information Only Plans: are a register of survey documents lodged at the Lands Titles Office (LTO) reflecting survey work undertaken by registered surveyors and include all Remark Surveys and some (at the surveyors discretion) Identification Surveys or similar surveys that locate survey data of possible future interest to the surveyor. If part of a Remark Instruction they can quite easily generate costs of $2500 or more. SIO Plan costs can typically run into $3-$5000 or more depending on the nature of the title. The Certificate that goes on the plan for such surveys alters to suit the circumstance of the survey.

They are NOT examined by the LTO and are a register only. They are searchable and form part of what one receives when undertaking a Survey Search. They can be used to assist further boundary definition.