Saatchi & Saatchi advertising and sister agency Starcom are moving into Wellington's new Clyde Quay Wharf development in August.
They are the first major office tenants to take space in the $150 million Willis Bond redevelopment of the old Overseas Passenger Terminal.
The agencies will be moving out of Courtenay Pl offices, where they have been based for the past 25 years.
Chief executive Nicky Bell said it was a new era for Saatchi and its 20 Wellington staff.
Business director Wendy Schrijvers said the new offices and their stunning views would provide an incredible creative space for staff and clients.
Willis Bond director David McGuinness said the agency was leasing about 300 square metres of ground floor and mezzanine space near the city end of the wharf.
He also announced that Mojo & Co also had taken space for a new concept eatery and cafe alongside the new White House restaurant, which is scheduled to open in July.
The Healthfit Collective has also taken space for a new gym on the ground floor of the Athfield-designed wharf complex.
The development would provide for a mix of hospitality, office and other uses in addition to the 76 luxury apartments, McGuinness said.