Former Channel Infrastructure CEO will take the reins at the listed retirement village developer, after the previous CEO left abruptly in April.
They replace Professor Brett Delahunt and Dr David Ackerley.
Phillippa Wilkie is promoted to special counsel and Jarrod Walker comes back to Chapman Tripp as a partner.
Mark Ryall's appointment is confirmed after acting in the role for three months.
He will be the head of business development for Australia and New Zealand.
Shivani Gounder and Vince Beckett appointed as firm expands its local team.
Arihia Bennett took on the job in August 2012, her third stint working for her iwi over the past three decades.