Designed to consolidate the company’s administrative offices, laboratory/manufacturing plant, and warehouse into a more efficient streamlined working environment, the new Convex head office is located on the Kahikatea Drive side of the Convex complex in Hamilton.

It replaces the company’s former administrative building – which would have required extensive recladding to remediate escalating problems caused by its leaky building construction. A new build was deemed the most sensible and fiscally responsible solution.


About the project

Construction work included demolition of existing buildings, design and build of a two-storey high spec office block, including ablution facilities, canteen and an outdoor area. Plus, a significant extension to the existing warehouse, enabling approximately 500 additional pallets to be stored on site.

The result is a functional design and a purpose-built solution which enables most of the team to work in the same area – improving workflow efficiencies and teamwork.

The project team, client, designers, and construction team worked closely together to ensure that the business could remain operational throughout the entire build programme.

Completion date






Client testimonial

Hamilton business Convex prides itself on providing innovative packaging solutions for its customers as it strives to push the boundaries of sustainability, performance and shelf appeal.

Mirroring that continued focus on quality, innovation and environmental responsibility, Fosters has been Convex’s first choice in construction companies for nearly three decades.

“When it comes to building solutions, Fosters have always provided us with the total package,” director and CFO Tony Letcher said.

“Our relationship with them stretches back to the 1980s and we’ve always found them excellent. They’ve got depth of knowledge, we’ve found them easy to deal with, and we’ve been very happy with every project they’ve delivered for us.”

So, Fosters was immediately engaged when Convex embarked on a project to demolish and replace its offices and expand its warehouse space in 2021.

“We’d always planned to place our head office facing out on to Kahikatea Drive with a design we would be proud of and features that would stand out to those passing by,” Tony said.


Particularly valuable, he said, was Fosters’ feedback on architectural plans, which were carefully scrutinised before work began in mid-2022.

“Fosters’ ability to provide opinions on the costs of those design features and how things could be done differently to save money was really helpful.”

He felt Fosters’ strong contractor relationships were one of the company’s greatest strengths in being able to manage construction challenges and deliver the build within a tight timeframe.

“We began this project when there was high demand and significant material and labour constraints in the building sector,” he said.

“Fosters were able to mitigate those challenges, so they were not an issue for us. I think that comes back to their experience and their relationships with contractors and other industry professionals that they’ve established over many years.”

Convex founder David Fredericksen and supply chain manager Louise Cassidy were also impressed with Fosters’ excellent time management, proactive communication and ability to work around a functioning manufacturing business.

“We’ve come to expect a lot from Fosters, but the finished quality of the build still managed to exceed our expectations,” David said.


“When it comes to building solutions, Fosters have always provided us with the total package.”

Tony Letcher, CFO Convex

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