Kāhui Tū Kaha is a charitable company under the auspices of Te Rūnanga ō Ngāti Whātua. It was previously known as Affinity Services. It provides social housing and mental health services in Auckland. Its range of mental health services includes adult, maternal and youth respite services; specific services for Māori, Pacific and Asian plus general support and counselling services; Muslim services, and Rainbow services. It delivers Rainbow Tick, a workplace certification program.