Australian Institute of Quantity Surveyors (AIQS) is a professional standards body.  Through its leadership, standards and code of ethics, it ensures that practising Quantity Surveyors are dedicated to maintaining the highest standards of professional excellence.

AIQS is an organisation with Chapters and Divisions in all States and Territories. It also has a strong overseas membership and is the Australian peak body to the International Cost Engineering Council (ICEC) and the Pacific Association of Quantity Surveyors (PAQS).

As a Quantity Surveyor is an important member of the building and construction team, AIQS is an active participant in all the industry major forums and lobby groups.

AIQS plays an important role in industry research through the collection of cost data and the publishing of the Current Construction Costs. It also publishes,The Australian Standard Method of Measurement of Building Works (6th Edition) and cooperates with tertiary institutions on research programs.

AIQS has formal links with the Royal Institution of Chartered Surveyors (RICS), the New Zealand Institute of Quantity Surveyors (NZIQS), the Singapore Institute of Surveyors and Valuers (SISV), the International Cost Engineering Council (ICEC) and the Pacific Association of Quantity Surveyors (PAQS).

AIQS publishes the quarterly publication The Building Economist which was first produced in 1961.AIQS's other major publications are the Current Construction Costs (printed in The Building Economist) and the Australian Cost Management Manual and a series of useful technical guides and textbooks, as well as videos, CDs and Practice Notes. AIQS also publishes a fortnightly E-Bulletin which is emailed to all Members, as well as Chapter Newsletters.

AIQS's primary functions are to:
  • ensure the necessary standards of education and training which lead to membership
  • ensure members are kept abreast of emerging issues affecting them and the industry as a whole 
  • support the education of trainees 
  • encourage and provide continue professional development 
  • maintain standards and methods of procedure 
  • uphold ethical standards of practice and code of conduct 
  • encourage and support appropriate research 
  • represent the profession at government, industry and public forums lobby for and encourage economic use of building and construction resources 
  • produce policies and position statements on professional and industry matters. 

Membership is open to Quantity Surveyors, Building or Construction Economists, Cost Engineers, Cost Estimators and others with appropriate degrees/qualifications and work experience. Students and other related professionals may also be eligible for membership. AIQS actively encourages excellence in the profession by awarding annual prizes to top students in Quantity Surveying degree courses and peer recognition of senior members by the awarding of the title "Fellow of AIQS".