Herriot Melhuish O’Neill Architects - Wellington, Christchurch, Auckland, Tauranga

Racing into the third decade of HMOA Christchurch! Celebrating 20 years in the mainland

12/8/2025

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We catch up with director Duval O'Neill, reflecting on 20 years since he set up the Ōtautahi studio.

Duval, happy birthday to the Christchurch studio. How significant is this 20th anniversary?

It's an important milestone for the studio and for the practice as a whole. 

Establishing any architectural practice comes with challenges and means you're in it for the long game. Setting up in Christchurch came with its own special tests, especially given I went to school in Southland! 

That said, everyone – early contacts and colleagues – was extremely welcoming to me when we set up the HMOA Christchurch studio 20 years ago. None more so than Sir Ian Athfield and his fantastic team in the Athfield Christchurch studio, who gave me my first desk.

 

You'd only been in business for a few years when the first earthquake struck. What were the implications of the quakes for HMOA?

There's no question that the bulk of the twenty years of the Christchurch practice was defined by the Christchurch earthquakes and the people we met because of them. The quakes not only changed the physical face of the city but also disrupted the status quo for Christchurch architecture. Workwise, I believe we benefited, and the resulting projects have significantly contributed to HMOA's diverse portfolio of work. 

Personally, the past two decades were defined by the challenges of rebuilding our house and the loss of my father. The strength and support of my wife, Bridget, and my fantastic work colleagues made all the difference in getting through it all.

You've worked on some incredible projects since opening the Ōtautahi studio. Can you tell us about a couple?

When I reflect on our projects, I always come back to the Clifton Hill House and just how gratifying it was to work with such wonderful clients – people who trusted our ability to respect and honour the essence of what was already a very special house. Working with Megan Wraight, founding director of Wraight & Associates Landscape Architects, was also a particularly meaningful collaboration.

There are other memorable projects, clients and collaborators – too many to mention – but architect Don Cowey was a special and generous man. His influence is with me every day in our rebuilt house in Mt Pleasant. Don designed our original home, which was damaged beyond repair in the earthquakes. We rebuilt the house to his original floor plan and did our best to retain the essence of his design.

And the last twenty years wouldn’t have been possible without the continued support of my business partners John Melhuish and Max Herriot and, more recently, my colleague in Christchurch Nic Sewell. Nic has made a massive difference, ensuring continuity of leadership and drive as we continue to build the practice.

Past and present members of our studio have also been a huge support in getting us to where we are now –  a special shout-out to architect Lani van Schreven, who has recently become an HMOA Associate.

Your beautiful studio, designed by Sir Miles Warren, has also played an important role in the last 20 years of HMOA Christchurch. Can you tell us more about that?

We are fortunate to be working out of the studio at 65 Cambridge Terrace that was the former office and home of the late Sir Miles Warren. The building and Sir Miles' work continue to be a strong influence on our projects, and we thank The Warren Trust and Athfield Architects for their continued support in having us here for over 20 years.

 

 

Read more about the history of HMOA and the Christchurch studio in this NZ Architecture practice-in-profile.

Learn more about Sir Miles Warren's original office at home in a previous interview with Duval, with photos by Russ Kleyn. 

Bridget and Duval O'Neill
When HMOA Christchurch director Duval O'Neill and his wife Bridget moved to Christchurch over 20 years ago, Duval was already part of the HMOA team, working for John Melhuish and Max Herriot in the Wellington studio: "John and Max were a sounding board," says Duval, "That’s how the idea came about to give it a go and set up a Christchurch office. I was relieved; I knew I was with the right people."
Duval in the first HMOA Christchurch studio
After the first couple of months in Christchurch, Sir Ian Athfield generously offered this spacious top-floor space as the first HMOA studio – the area was Sir Miles Warren's original apartment. "I set up office there using Sir Miles' original lectern as my desk," says Duval. "It was a little isolating being on my own, but there were plenty of visitors keen to venture up the very narrow, steep stairs."
Clifton Hill House. Image Russell Kleyn
Clifton Hill House, finalist, 2013 Home of the Year and winner, 2013 NZIA Local Award.
HMOA founding directors
Throwback to the OGs: Wellington directors John Melhuish and Max Herriot with Duval O'Neill.
Nic and Sally
HMOA Associate Nic Sewell with architectural graduate Sally Britten.
Lani and Duval in the Christchurch studio
Duval O'Neill with HMOA Associate Lani van Schreven in the Christchurch studio. Lani has also been with HMOA Christchurch for 20 years, having also previously worked in the Wellington studio.