Under the Valuation of Land Act 1971, the Valuer-General currently revalues every property in South Australia every year.  Sales of all property types are analysed to determine market movements, if any,   This analysis of sales happens throughout the year and occurs both for Site (land) values and Capital (improved) values.  Different market movements can occur among varying property types and locations.

A property database, central to the valuation process, is kept of all properties within the state and is updated each year.  The database includes information on land use (such as residential, commercial, industrial) and the physical details of the land and improvements (such as building size, construction and condition).

This information is updated regularly with changes identified from a range of sources, including development approval information from Councils and manual inspection programs by valuation field staff.

Your property value is then calculated by comparing the property data for your property to that of similar properties, which have sold with adjustments being made for any differences.