Constructions Cost Estimate

What is a Quantity Surveyor?

A Quantity Surveyor is a building industry professional who specialises in estimating the value of construction works.

The term quantity surveyor derives from the role taken in quantifying the various items of labour and material that it takes to construct a given project.

Quantity surveyors use their skills to determine the cost of building work ranging from residential properties through to assessing the construction value of new multi-million dollar office towers. Additionally they are used on civil, mining and infrastructure projects to determine the cost of such facilities.

Quantity surveyors are involved at various stages of the construction process, typically prior to construction, during construction and following completion of the works, for determining property tax depreciation.

The Role of the Quantity Surveyor

Quantity surveyors work with accountants, architects, engineers, builders, building owners, developers, financiers, government, insurance underwriters, loss adjusters, solicitors and subcontractors.

The quantity surveyor’s detailed knowledge of construction costs allows them to perform the following tasks:


Prior to Construction

  • Preparation of Feasibility Studies
  • Estimating costs to define project budgets
  • Analysis of the effect of design changes on the project budget
  • Cost planning to refine the budget as the design documents develop
  • Preparation of Bills of Quantities to assist in the tender process
  • Reviews of Builder’s tender submissions

During Construction

  • Provision of cost control services during construction
  • Assessment of the builder’s progress claims
  • Assessment of variation and delay claims

Post Construction