"We had a lot of special occasions here in the past - birthdays and Christmases - and this will continue that. So, it's not just about three houses, it's all about being together."
Tawhai said a key point to the project, alongside providing safe and affordable accommodation, would be to encourage more family members into home ownership, and to inspire others to make use of Māori freehold land for housing.
"We're encouraging the younger generation to break that rental cycle. So, there's not just a short-term benefit from this."
Speaking at the official blessing of the Jubilee St site last week, Te Puni Kokiri senior adviser George Mackey said the family had come a long way, inspired by Bill's parents who settled in the street after the end of World War II.
"The journey the whānau have been on to get to this point has been pretty amazing, it's the first urban papakāinga in the country to be developed by an individual whānau - not a big Māori trustee, not an iwi - but a whānau that had a dream and a passion.
"To stand here today and see the realisation of that inspiration is humbling."
The project was achieved by changing title of the land to Māori freehold land, and appointing a trust to provide guardianship.
"What they have done is futureproof it for future generations."
The site now includes three houses, a mix of three- and four-bedroomed properties, with a combined floor space of 310sq m and would be made available for a reduced rental cost to family members.