Our People

Gavin Tonkin

Managing Director

Gavin is the business founder and hands-on Managing Director for TSDB, who through both his professional design and construction experience, has developed a successful one stop Design & Construct business.

He has expertise in many facets of the design and development process including master planning and future-proofing, building rules and statutory compliance, design and buildability smarts and leads the team in quality value for money solutions that meet the varying client needs.

Gavin is a strong leader and manages the company to provide a successful balance of professional, technical, and trade-based personnel enabling the company to design excellence with cost efficiency and shape our client’s vision into reality.


Matthew Swinburne

Operations Manager

Matthew is the Operations Manager for TSDB who brings a wealth of Design and Construct experience to your project.

Matthew has a strong background in both Architecture and Construction, is a registered Architect and previously filled the role of Senior Design Manager for Major Head Contractors in SA, including the delivery of Adelaide Oval.

He has the required skills, expertise and experience to oversee the processes of both Design & Construction for the Head Contractor as well as add value to your project at the front end. Matthew also has a solid background in quality management, team management and oversees all facets of the TSDB business.

With this diverse range of technical ability and management experience Matthew is a highly valued and invested member of the TSDB team.