This course examines the current performance issues of our housing stock. It explores strategies and solutions for retrofitting sustainable, resilient, and regenerative healthy housing and communities in Aotearoa New Zealand.
Available evidence suggests that most new houses in Aotearoa are designed and constructed to a quality that only just meets the minimum requirements of the New Zealand Building Code. These ‘bare minimum houses’ have been described as ‘the poorest-performing homes that can legally be built’. Many of the minimum standards set in New Zealand are low compared with those in other developed countries such as Australia, Europe, and the UK. Injuries and hospitalisations caused purely by cold, damp, mouldy, or otherwise unsafe housing are estimated to cost New Zealand more than $145 million each year in ACC claims and hospitalisation costs. A 2015 estimate placed the cost of respiratory disease in New Zealand at $7 billion annually (including mortality, disability, hospitalisation, prescriptions, and doctors’ visits). We also experience an excess winter mortality of approximately 1,600 deaths each year linked to poor housing conditions. At the same time, the most recent Intergovernmental Panel on Climate Change (IPCC) report indicates that if we wish to stabilise global temperatures within a 1.5°C increase from pre-industrial levels, incremental transformation toward a more sustainable future is no longer a viable option. The current imperative is to radically transform our built environment, mapping out a path toward a more sustainable and resilient ‘post-carbon’ future. Communities will need to provide essential services locally: clean energy, sustainable water, local food, affordable low-carbon buildings, and active transport options.
Using a key city neighbourhood block as an example, this seminar will explore the ‘why’ and ‘how’ of retrofitting and transforming our existing built form to deliver regenerative, low-carbon communities that provide sustainable and healthy housing.