Fastest-growing construction firm rings in success
Stronghold Group has grown from a small Auckland building contractor into the country’s fastest growing construction firm, with owners Quincy and Karalee Tangiau backing values, relationships, and careful reinvestment over outside capital.
What’s at stake? Stronghold’s next phase of growth will test whether a self-funded Māori construction group can keep scaling in a difficult construction market while holding fast to its values.
Background: Founded in 2020, Stronghold placed second on the 2025 Deloitte Fast 50 index with 590% growth over three years and has expanded into a group of four businesses.
Main players: Quincy and Karalee Tangiau.
There is a hand bell upstairs in Stronghold Group’s New Lynn offices.
Every time a new contract is won, someone rings it. The sound travels through the building and everyone gets to share in the moment. It is a small ritual, but it says a lot about the way Quincy and Karalee Tangiau have built
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Key points
What’s at stake? Stronghold’s next phase of growth will test whether a self-funded Māori construction group can keep scaling in a difficult construction market while holding fast to its values.
Background: Founded in 2020, Stronghold placed second on the 2025 Deloitte Fast 50 index with 590% growth over three years and has expanded into a group of four businesses.
