T&T is part of the Tonkin & Taylor Group of companies and is a New Zealand based, specialist environmental and engineering consultancy that solves problems. We employ the best people who utilize their specialist capabilities to ensure the most innovative and sustainable solutions are developed to meet our clients' evolving business needs. Our team includes some of the most respected professionals in the business and many are market leaders in their areas of technical expertise. Most of our work is based within Australasia and the Asia-Pacific region and we provide specialist expertise in the following broad areas: - Civil; - Environmental; - Geotechnical; and - Water Resources. The pragmatic approach we take, combined with our specialist inputs and track record of major projects, means we can shape our services to closely match client requirements. Our client base includes government departments, major international and donor agencies, local government, commercial organisations, legal companies, developers, contractors, private individuals and other consultants.

In the beginning...
 

Ralph Tonkin and Don Taylor met in 1956 when they both worked on the construction of the Auckland Harbour Bridge. In 1961 they formally established Tonkin + Taylor, Consulting Engineers.

The partnership soon grew and was responsible for some notable projects including the lower Waikato River stop banks, investigations for the Marsden Point Oil Refinery, and the innovative Whau Valley Dam for Whangarei’s water supply.

T+T ventured overseas for the first time in 1969 when Ralph joined a New Zealand Government Colombo Plan mission to Malaysia and Indonesia.