What are the differences between Cost Control and Cost Estimation

In the construction industry, managing costs effectively is as critical as managing time and quality. This is where the cost department plays a significant role in ensuring financial stability, profitability, and project success. The cost department is responsible for budgeting, cost estimation, cost control, and financial reporting, all of which help in making informed decisions and preventing budget overruns. But what is the difference between Cost Control and Cost Estimation. This article explores the difference between Cost Control and Cost Estimation and how cost contributes to the successful delivery of construction projects.

Cost Processes According to PMI

Cost Management includes the processes that are required to maintain financial control of projects (economic evaluation which initiates the project, estimating, organizing, controlling, analyzing, reporting, forecasting, and taking the necessary corrective action.

Cost Estimation

1.       Definition

According to PMI, Cost estimation is the process of assembling and predicting costs of a project over its life cycle. It involves calculating material, labour, equipment, overhead, and contingency costs to provide a realistic budget before and during project execution.

The economic evaluation is the initial planning phase to determine whether a project is economically and technically feasible and whether sufficient funding can be obtained to implement the project.

2.       Example

A project team is tasked with building a 10-story commercial building. During the planning phase, they conduct a detailed cost estimate by:

·         Material costs: $5 million (cement, steel, glass, etc.)

·         Labor costs: $3 million (engineers, supervisors, workers)

·         Equipment costs: $1.5 million (cranes, scaffolding, generators)

·         Contingency reserve: $500,000 (to cover unforeseen risks)

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·         Total estimated cost: $10 million

Cost Budgeting

1.       Definition

The cost budgeting process establishes budgets, standards, and a monitoring system to measure and manage the project’s investment cost. Once project approval is obtained, this process is the planning phase. It includes all the accounting functions required to establish procedures and systems to monitor the project.

2.       Example

The total estimated cost of $10 million is distributed as follows:

·         Foundation work: $2 million

·         Structural work: $3.5 million

·         Mechanical, Electrical, & Plumbing (MEP): $2.5 million

·         Finishing work: $2 million

Cost Controls

1.       Definition

The process of cost control is the gathering, accumulating, analyzing, monitoring, reporting, and managing of the costs on an ongoing basis. The cost control usually tracks actual costs vs. planned costs throughout the project to help identify cost deviations and assist in taking corrective actions to prevent overruns.

2.       Example

Halfway through the project, the project manager reviews cost performance and finds:

·         Planned spending (Budgeted Cost of Work Performed – BCWP): $5 million

·         Actual spending (Actual Cost – AC): $5.5 million

·         Earned value (EV): $4.8 million

·         Cost performance index (CPI) = EV / AC = 4.8 / 5.5 = 0.87 (which is below 1, indicating cost overrun)

You can check out our Free Construction Project Management Fundamentals course to learn more about earned value management calculations.

Cost Applications

1.       Definition

This is the process level associated with special applications of cost techniques that are not included in the other cost processes. It also includes associated topics that affect cost management, such as computer applications, value analysis, etc.

2.       Example

The project team logs actual expenses daily in project accounting software (e.g., Oracle Primavera P6, SAP, or MS Project).

• Concrete purchase: $500,000
• Labor paid for the week: $200,000
• Rental equipment: $100,000
• Unforeseen costs: $50,000

Difference Between Cost Control and Cost Estimation

People usually tend to misunderstand the difference between cost control and cost estimation since those two terminologies are widely used in the construction field.

Conclusion

Effective cost management ensures a construction project stays within budget, maintains profitability, and minimizes financial risks. By following a structured cost estimation, budgeting, control, and reporting process, project managers can make informed financial decisions and ensure successful project completion.

You can learn more about the whole cost processes and terminologies through our Cost Control for Construction Projects course.

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