PurposeThe relationship between sustainability and value in property has been a major area of investigation over the past decade. However, in spite of the extant literature and research, the connections made by valuers in practice of the value relationship are still unresolved. The purpose of this paper is to investigate, in the Australian context, valuers’ perception of the relationship between sustainability and value; and their experience and knowledge of sustainability in valuation practice.Design/methodology/approachThe research investigates valuers’ perception and knowledge of sustainability and its inclusion in valuation practice in Australia. The approach uses a longitudinal survey of valuers from 2007 to 2015 tracking valuers’ knowledge, understanding, inclusion of sustainability reporting and the perceptions of the relationship between sustainability and market value.FindingsThis paper presents findings from a longitudinal survey that has been conducted in Australia since 2007, identifying changes between 2007, the height of the property market and sustainability engagement prior to the global financial crisis, and the subsequent years to 2015. The growth of sustainability in the property market is significant, however, valuers’ knowledge and reporting on sustainability is not demonstrating the same level of development. As a result, this is inhibiting valuers reporting on sustainability and has implications for practice and treatment of market values.Practical implicationsThis research highlights the need to examine how to assist valuers to more rapidly develop knowledge and experience to reflect the implications of change in practice. Current approaches being developed in the UK and Europe, like the introduction of RenoValue professional development programs and guidance documents, to assist valuers to develop their knowledge needs to be implemented in the Australian environment as current approaches are inadequate, and steps need to be taken in order to assist their development of knowledge and experience as the market demonstrates growth and acceptance of sustainability. This research identifies the need to re-examine how professional development is undertaken and knowledge developed by those practicing in the profession in Australia.Originality/valueThis longitudinal survey is the only research that has spanned a substantial period of time attempting to ascertain valuers’ perception of the relationship between sustainability and value; and attempts to track the knowledge development of valuers in the context of sustainability. The findings identify how the market is developing and adhering to a product model development theory, however, also identifies more fundamental issues and implications for valuation praxis, in the development of knowledge and ability of valuers to adapt to change and reflect these valuations.