The role of a Quantity Surveyor (QS) in construction is to manage the costs and financial aspects of a project, from the initial planning stages through to the final construction and post-construction phases.
A Clerk of Works (CoW) is a construction professional who is responsible for overseeing the quality and workmanship of a construction project on behalf of the client or owner.
While it is not always necessary to appoint a Quantity Surveyor in a relatively small and straight-forward construction project, their role is considered essential in larger and more complex projects.