Obsolescence, conceptual model and proposal for case studies

Abstract

What is obsolescence? There is a general understanding that buildings, similar to machinery, should be demolished and replaced when they become obsolete. The truth of this assertion is found problematic, as obsolescence is not clearly understood in conceptual or practical terms. Understanding obsolescence is important. It presents a serious threat to built property as it rarely accounts for the immobile, long lasting and capital-intensive characteristics of property, or its societal and cultural significance. Minimizing obsolescence and extending longevity are therefore indispensable for maintaining the investments involved. In this paper the characteristics of obsolescence are explored to address how buildings can be diagnosed and to what extent demolition is an unavoidable consequence. A conceptual model is developed which allows for different kinds of obsolescence to be characterised. The usefulness of the model can be tested by analysing cases of obsolescence. A proposal for case studies is described.