Mr McDermott has moved from Auckland to take the job. He has worked for over 10 years as a garden landscaper in New Zealand, the US and France, and more recently studied landscape architecture in Wellington.
"I'm really excited," Mr McDermott said. "So much of the hard structural landscaping has been done, I feel my job is to refine some of the direction as well as build on what's already here. I have my own aesthetic but with such a large site and established community involvement there's no way I would make big changes."
Mr McDermott will oversee the building of a new centre that will combine offices, cafe, shop, meeting rooms and classrooms, with work set to start in March.
Sad though he is to leave after many rewarding years, Mr Muir is looking forward to a change.
"The essence of it is that it's time for me to move on to something else," he said.