Every construction project, whether a small building or a large infrastructure development relies on accurate planning, cost control, and financial management. This is where quantity surveying comes in. By ensuring that projects are delivered on time, within budget, and to the required quality, quantity surveyors play a vital role in the success of civil engineering and construction projects.
In this article, we’ll explain what is quantity surveying in civil engineering, define its scope, explore the roles and responsibilities of a quantity surveyor, and discuss the importance of quantity surveying in today’s construction industry.

What Is Quantity Surveying in Civil Engineering?
Quantity surveying is a specialized field of civil engineering and structural and construction engineering, emphasizing financial and contractual control across projects.
Put simply, quantity surveyors act as the financial and contractual managers of construction projects, making sure that economic decisions align with engineering and design goals.
Roles and Responsibilities of a Quantity Surveyor
The role of a quantity surveyor (QS) is dynamic and extends across all phases of a project, from conception to completion, working alongside the civil engineering design process.
- Cost estimation: Preparing detailed cost plans and estimates at the design stage.
- Budget management: Monitoring expenses and ensuring that projects stay within financial limits.
- Tendering and procurement: Preparing tender documents, analyzing bids, and advising on contractor selection.
- Contract administration: Drafting, managing, and enforcing contracts between clients, contractors, and subcontractors.
- Valuations and payments: Assessing the value of work completed and certifying payments to contractors.
- Risk management: Identifying financial risks and advising on strategies to minimize cost overruns.
- Project advice: Providing cost-related guidance to clients, architects, engineers, and contractors at each stage.
In addition, quantity surveyors often act as independent consultants, ensuring fairness and transparency in contractual relationships.
Scope of Work in Quantity Surveying
The scope of quantity surveying is broad and covers a wide range of activities throughout the project lifecycle, complementing the tools civil engineers use in planning and execution.
- Feasibility studies: Analyzing the financial viability of proposed projects.
- Cost planning: Establishing and monitoring budgets during design and construction.
- Tender documentation: Preparing bills of quantities, schedules of rates, and other contract documents.
- Contract management: Ensuring compliance with legal and financial terms during project execution.
- Value engineering: Evaluating alternative construction methods or materials to reduce costs without sacrificing quality.
- Dispute resolution: Assisting in negotiations or arbitration when contractual disagreements arise.
For example, during the early stages of a bridge project, a quantity surveyor may provide cost forecasts, advise on tendering strategies, and later oversee contract payments and final accounts once the bridge is completed.
Importance of Quantity Surveying in Civil Engineering
Understanding the importance of quantity surveying in civil engineering highlights why this profession is indispensable, continuing a tradition rooted in the history of civil engineering.
- Financial control: By monitoring budgets and costs, QS professionals ensure projects remain financially viable.
- Resource efficiency: Effective cost planning reduces waste of materials, labor, and time.
- Risk reduction: Through careful analysis and contract management, risks of disputes, delays, and overruns are minimized.
- Project success: Quantity surveyors contribute to achieving projects that are delivered on schedule, within budget, and to the required quality.
- Stakeholder confidence: Transparent financial management builds trust between clients, contractors, and communities.

Conclusion
So, what is quantity surveying? In civil engineering, it is the discipline that ensures projects are financially and contractually managed from start to finish. Quantity surveyors estimate costs, manage budgets, oversee contracts, and safeguard financial efficiency, all while supporting the successful delivery of infrastructure and buildings.