Home is where people spend most time. Warm, dry, mould-free, safe and secure housing keeps us well and healthy. Our research shows how aspects of housing lead to health or illness. With community partners, we will scale up interventions that protect health and benefit the whole population. We will focus on housing interventions that increase equitable health outcomes. We will look at housing standards led by government agencies and community-led interventions. We will evaluate natural experiments of new housing interventions, such as reducing injury in homes. We will increase understanding of the successes and failures of housing policies and measure and value the benefits and costs of intervening. We will work with Healthy Housing Initiatives partners using the Integrated Data Infrastructure (IDI), bringing together administrative and qualitative data to reduce respiratory and cardiovascular illnesses, injuries, and to improve mental health. By understanding housing conditions for Māori, we can improve equity in housing.