Mr Wallace said ownership of the marina would help the corporation open up a second front of development on the adjacent land that it owned.
"It's an important gateway to this area of our land holdings," he said.
"By promoting the growth of new marine service businesses at the marina, we plan to stimulate new demand on our land from a range of potential downstream service and retail providers."
Ownership of the marina's freehold title is significant as other marinas are almost invariably operating under some form of leasehold title.
This gives the company the ability to respond quickly to market demand, adding value to the infrastructure already in place by developing it to maximise appeal to boat owners and businesses wanting to establish themselves there.
"The marina's existing infrastructure includes world-class mooring with customs facilities, a fuel dock and a range of waterfront retail services catering for the marina, boat owners and the neighbouring residential community," Mr Wallace said.
"One of Northland's most popular public boat ramps is also situated within the overall Marsden Cove marina complex."
The corporation intends to undertake further development of the site on a phased basis and potential future development opportunities include a vessel haul-out facility, a dry-stack storage system for smaller boats, marine chandlery and a wide range of servicing facilities.
"The quality of the assets we're buying - prime waterfront land with an established infrastructure - is testament to the values and standards of Hopper Developments," Mr Wallace said.
"The opportunity exists to make Whangarei Harbour in general and Marsden Cove Marina, in particular, the destination of choice for long-distance yachties arriving in and departing from New Zealand.
"And an attractive option for boat owners closer to home looking for an alternative mooring with a wide selection of marine facilities, close to a major centre and with easy access to and from Auckland."
The corporation recently completed a wide-ranging review and evaluation of its principal activities and Mr Wallace said buying the Marsden Cove Marina complex was a good fit with the company's focus.