Widnell is an independently owned international firm of Quantity Surveyors providing professional services for building developments, civil and infrastructure projects, process and petrochemical installations, interior fitouts and maintenance work. Our clients include developers, corporations, government departments, institutions, financiers, planning and design consultants and contractors.

Our Sydney office was established in 1971 from the merger of Chas A Harding and Son (founded in 1910) and Widnell and Trollope (London 1852) and operates throughout Australia and East Asia, in conjunction with our sister practice, Widnell Limited, of Hong Kong. The group has over 30 years experience in the region on all types of projects and employs a high proportion of senior professional staff to provide a superior quality of service based on experience and initiative.

Widnell, together with its allied practices, is represented in over 40 countries worldwide and employs over 1300 staff. This global alliance forms one of the world's largest construction cost consultancies. The Widnell group enjoy reputations for quality and innovation.