Harris said more emphasis would go on fashion.
"The centre will be given a new, fresh identity of its own, catering to its fashion-focused customer base on the North Shore," he said.
"Shore City is very popular as a local fashion centre with many customers having grown up shopping there. We plan to build on its existing strength in that market, expanding on its status as a boutique fashion destination," Harris said.
Market surveys were being conducted and feedback from focus groups received to identify customers' needs and priorities.
New concepts or retailers not already in New Zealand might be introduced, Harris said.
Aviva has $514 billion assets under management and the Takapuna purchase is its first in New Zealand.