Sustainable urban development requires the education of professionals dealing with the built environment. Property valuers constitute one such important albeit neglected group of actors. When the aim is to comprehend value and valuation, the questions to ask include the following: What is the ideal definition of sustainable development in a valuation context? Is it about the diversity of value systems? Or is it about long-term thinking in terms of reinvesting the profits harvested? And what is the role of generating data on these factors? This paper reports some suggestions for answering these questions in a residential context.