In the fast-paced world of construction, every decision especially financial one can significantly influence the final outcome. One of the most overlooked yet critical factors in a project's success is the timing of involving a Quantity Surveyor (QS). Far too often, developers and clients bring in QS professionals mid-project or during the cost-reporting stage, missing out on the invaluable benefits they could have gained from early-stage involvement. This article explores how engaging a Quantity Surveyor from the pre-construction phase all the way through to the final account can enhance cost control, reduce risk, and ensure the smooth delivery of construction projects across London and the UK. What Is a Quantity Surveyor’s Role? A Quantity Surveyor is a construction cost consultant who manages all aspects of contractual and financial management within a project. Their responsibilities include preparing cost plans, Bills of Quantities, procurement advice, tender analysis, va...