In the midst of the current crisis, initially sparked by a housing bubble in the US, tax reform proposals become ever more relevant. The present paper elaborates one such proposal by using system dynamics. It presents the logic of the current property tax and an alternative land value tax system, it compares them and makes the case for the benefits of shifting tax from property to land value. Based on a simulation model consideration is given to the practical repercussions for energy consumption of the modern building stock which is a driver of final primary energy in most countries.Multi-Actor SystemsTechnology, Policy and Managemen