Outcomes are reported from an evaluation of the New Zealand Accident Compensation Corporation’s (ACC) ‘My Home is My Marae’ approach to injury prevention for whānau (families). Drawing from Māori models of health means that this approach is whānau inclusive (reflecting the hauora of the whānau), whānau empowering (improving knowledge and awareness of whānau to reduce, eliminate or isolate hazards in their whare), environmental (making changes in the home – te oa turoa) and physical (reducing the risk or incidence and/or severity of injury in the home – te taha tinana). From November 2013 to June 2014, 14 ‘My Home is My Marae’ trials were conducted across the South Auckland and Far North regions of New Zealand. All were delivered by local Māori providers of healthcare, education and social services. This evaluation team interviewed a purposive sample of 14 kaimahi (staff) from 6 of the provider organisations. A Kaupapa Māori theory-based methodology identified 5 key critical success factors in ‘My Home is My Marae’: mana tangata (reputation, respect and credibility); manākitanga (showing care for people); kānohi-ki-te-kānohi (face-to-face approach); capacity building for kaimahi, whānau and providers and ‘low or no cost’ solutions to hazards in the home. Data collected for the Far North area showed that 76% of the hazards identified could be resolved through ‘low or no cost’ solutions. No such data were available for South Auckland.