Director // David Chilton

David grew up on a farm not too far away from Chertsey and has spent most of his life in the Ashburton district. David attended Chertsey School moving on to Ashburton Intermediate and finally Ashburton College for his secondary education. In 1997 David attended Lincoln University gaining a Bachelor of Landscape Architecture in 2000. In 2002 David came back to Ashburton to work for a local architecture firm as a Landscape Architect. Whilst working in an Architecture office David’s attention became increasingly drawn to ‘Building Architecture’ and after several years of distance learning in 2009 David became an Architectural Licensed Building Practitioner (LBP).

David co-founded Chilton + Mayne Architecture Ltd in the August of 2010 with Garry Mayne and as a founding Director has been involved with many of the projects Chilton + Mayne Architecture Ltd have produced. He has a broad experience in successfully designing and delivering a range of building types.

2022 has seen a natural evolution for Chilton + Mayne Architecture, rebranding to Studio 4 Architects.  With the wealth of experience gained by the addition of new directors Julian & Matt and the continued support from Garry, David is motivated to continue delivering exciting projects across New Zealand.

David has designed and been involved in numerous of large residential projects and recent commercial projects including the large extensions and total re-fit to the PGG Wrightson Kimihia Research Facility, Hunting & Fishing Rangiora New Build, RD1 Methven New Build, CRT Rangiora New Build, Housing NZ Apartment Building Christchurch New Build, Redpaths Electrical Rangiora New Build, Burnett House Ashburton and the PGG Wrightson Rangiora New Build.

Head shot of David Chilton, a Director at Studio 4 Architects

Where possible David likes to give back to the local community and has provided architectural services for the Ashburton Fire Museum Extensions, The Celtic Rugby Grandstand and proposed extensions to the Methven Rugby Club & Changing rooms. 

David has experience successfully designing school projects in the Mid Canterbury and the greater Canterbury region.

Outside the office David is a keen outdoorsman and family man. David loves spending time exploring the district with his wife and two young daughters.

Director // Garry Mayne

Garry was born in Ashburton and has spent most of his life in this town.  He started at Fairton Primary School and moved onto Ashburton Intermediate and then to the Ashburton College. From there he graduated from Design & Arts College in 2000 with a National Diploma in Architectural Design. 

Garry co-founded Chilton + Mayne Architecture Ltd in 2010 with David Chilton and as a founding Director has been involved with many of the projects Chilton + Mayne Architecture Ltd have produced. He has a broad experience in successfully designing and delivering a range of building types.

At the beginning of 2022 Garry and David have joined forces with Julian & Matt and rebranded Chilton + Mayne Architecture to establish Studio 4 Architects Ltd, bringing all our talents together to create a forward-thinking client focused architecture practice. 

He has designed a number of large residential projects and commercial projects including, the Burnett House Building, Ashburton, Tennyson Street Retail Development, Rolleston, Stake Glass Office & Warehouse, Christchurch, Ray Mayne Hose & Fittings Office & Workshop, Ashburton, Precision Cutting Office & Workshop, Ashburton, TS Holdings Commercial Building Upgrades & Re-strengthening to 100% NBS, Ashburton, The Canterbury Biltong Headquarters, Christchurch, Housing NZ Apartment Complex Christchurch,

Garry has also been involved in a various school projects in Mid Canterbury and the wider South Island area.

Head shot of Garry Mayne, a Director at Studio 4 Architects

Outside the office Garry enjoys travelling with his partner, all sports and is a playing member of the Ashburton Squash Club.

Director // Julian O'Sullivan

Julian started his work career in Ashburton in 1995 and went on to establish his own practice, O’Sullivan Design, in 1997. In the year 2000 Julian rebranded the business and co-founded Blueprint Architectural Services Ltd where he worked with David and Garry between the years of 2000 – 2009. In 2010 Julian was recruited by WSP Architects (formerly Opus Architecture) to develop their architecture offering in Dunedin where he served for 3 years prior to being relocated to Christchurch and promoted to the role as the Southern Regions Studio Director until the end of 2021. Julian worked with Matt between 2010 – 2021 and now joins him, David and Garry as a Director of Studio 4 Architects Ltd.

Julian’s work history displays a myriad of differing commissions, and his diverse project background enables him to easily transition from one sector to another and to apply a wider scope of thought to the design and delivery process. Julian has a wealth of experience within the residential, industrial, commercial, government and private sectors, and his holistic architectural approach allows him to think freely to add value to the clients’ experience.

Julian is a multi-award winning highly experienced and qualified Architectural Designer with strong organisational skills and a proven history of project delivery based on almost 30 years of industry experience. Julian holds a National Diploma in Architecture Technology, is a Licensed Building Practitioner – Design 3, a Professional Member of the Architectural Designers of New Zealand as well an Affiliate Member of New Zealand Institute of Architects.

Picture of Julian

Key Achievements include: NZIA Southern Architecture Awards, 2021 – Te Puka o Te Waka, 2018 – Crawford St Car Park. ADNZ Regional Winner, 2016 – Chinese Methodist Church, 2015 –  Ravensdown Dunedin. ADNZ National Winner, 2015 – Dunedin Town Hall. Best Awards 2016 – Silver Pin – Distinction Hotel, Dunedin. National Finalist Civic Buildings – Interiors Magazine 2014

Outside of the office Julian is a dedicated family man with a keen interest in outdoor pursuits and a passion for hunting.

Director // Matt Sloper

Born and raised in Dunedin, Matt began his Architectural career with Opus Architecture in 2005 following the successful completion of his Otago Diploma in Architectural Draughting and National Diploma in Architectural Technology. In 2020 Matt became a Registered Architect through the experience pathway, indicating his extensive contribution in the industry after 16 years of working at WSP Architects (formerly Opus Architecture) across a broad range of projects.

Alongside Julian, David and Garry, Matt has now embarked on the exciting journey of forming Studio 4 Architects which is the combination of four respected practitioners. Bringing a wealth of skills together into one practice.

Matt has an eye for detail, commercial acuity and technical knowledge which ensures project success time and again. HIs design capabilities are recognised and have been rewarded by numerous design awards including an NZIA New Zealand Architecture Award in 2018 and NZIA Southern Architecture Award in 2018 for his roles on two significant projects in Christchurch and Dunedin.

A significant contribution to the Canterbury Earthquakes rebuild, Matt’s expertise and attention to detail proved vital in the successful delivery of the Christchurch Justice and Emergency Services Precinct anchor project where “New Zealand first” seismic design solutions were developed to provide a resilient fit for purpose facility. 

Matt is the practices Principal Architect, overseeing and being responsible for the architectural work being issued out of the Christchurch studio.

Away from the practice, Matt actively participates in Christchurch club football and is a keen sports follower. Spending time and relaxing with the family is important to Matt.

Head shot of Matt Sloper, a Director at Studio 4 Architects