New Union Square building set to open in September

Monday, 13 April 2026

Building B will feature 2280m² of office space over three floors as well as a ground floor retail offering.

A new office block at Hamilton’s Union Square is set to open in September, bringing another 250 workers into the fast-growing city precinct.

It’s the fourth building to be constructed out of the six planned for the development and will feature 2280m² of office space over three floors as well as a ground floor retail offering.

So far, the existing three completed projects are the Rabobank building, Building A carparking, and the Building E offices.

Foster Develop chief executive Rhys Harvey told the Waikato Times they were “about 70% through the construction programme” for Building B and were on track to open the site at the end of September.

He said the building was about 90% leased out.

A plan showing the Union Square building developments.

Building B is expected to open at the end of Spetember, Fosters Develop chief executive Rhys Harvey says.

French engineering and surveying firm AECOM will tenant one floor, with multinational food processing and packaging company Tetra Pak occupying the remaining office space.

Tenants had also been secured for the ground floor retail offering at the Alexander St entry to the precinct, though Harvey said he couldn’t yet say who those occupants were.

They will join the existing retailers which include the cafe at the Rabobank site and pilates business in Building E.

“[It] will really activate that ground floor area and that boulevard as you walk through to Alexandra Street,” he said.

Harvey has previously said that the total cost of Building B would be about $20 million. When asked if the project was on track to be completed for that figure, he said “we’re on budget - that’s all I’ll say”.

Overall, the Union Square development is expected to cost about $200 million.

There were currently over 1000 people working in the precinct and Building B was expected to bring another 250, he said.

That was alongside workers in the neighbouring DHB and KPMG buildings, and Fonterra at the South Bank.

Union Square building B is about 90% leased, Fosters Develop says.

Harvey said it made the Union Square precinct an attractive opportunity for hospitality businesses.

“When we've completed the development we'll have circa 2500 people working in the Direct Union Square development, so it presents a great opportunity for retailers and good food and beverage.

“It'll be a really great activated atmosphere for people.”

Building C, which would also provide office space, will be the next project within the precinct to get underway, he said, to be completed in 2028.

“We’ve got very strong interest from great tenants for that building.”

“It's very pleasing we've created a brand here at Union Square where the quality of the accommodation and the amenity which we're offering tenants is the best in town - we seem to be attracting some really great interest.”

He said all of the main boulevard, garden areas, and landscaping could be completed before the final development in the precinct, Building D, was completed.

“We've made a massive capital investment in the car park and the end of trip facilities and bike parks in there so the tenants that are going in now are enjoying all of that, rather than waiting for the development to [be] complete.”