Commercial Ability Worked Example

From Project Fee to Evidence

Commercial ability can feel difficult to demonstrate early in your engineering career. You may not be responsible for winning work or controlling an entire project budget, but you are probably already involved in activities that contribute to commercial management.

Here is a simple example of how fees, resource planning, budget monitoring, scope change and invoicing work together on a typical consultancy project and how they can become evidence of your professional development.

Commercial Ability Attribute      

·      Manage, prepare and control costs/budgets of engineering tasks or projects

·      Use sound knowledge of statutory and commercial frameworks within their own area of responsibility and have an appreciation of other commercial arrangements

The Scenario

An engineering consultancy is appointed to prepare a drainage strategy and supporting drawings for a residential development.

The agreed fixed fee is £12,000.

The Project Manager prepares an initial resource forecast:

Resource	Planned Hours	**Charge-Out Rate	Forecast Cost
Senior Engineer	20 hrs	£120/hr	£2,400
Engineer	50 hrs	£90/hr	£4,500
Graduate Engineer	40 hrs	£65/hr	£2,600
CAD Technician	25 hrs	£70/hr	£1,750
Total	135 hrs		£11,250

**The above fees and charge out rates are for example puroposes only and not based on market prices.

This leaves £750 of fee allowance against the £12,000 appointment.

1. Resource Planning

Before starting the work, the team considers who needs to do what.

Using a senior engineer for every task would quickly consume the budget. Instead, work is allocated according to competence and complexity.

The graduate may undertake initial calculations and information gathering, the engineer develops the design, the technician prepares drawings and the senior engineer reviews key outputs prior to issue.

Commercial lesson: Good resource planning means using the appropriate level of experience for each task while maintaining quality and technical assurance.

2. Monitoring the Budget

Throughout the project, the team reviews its expenditure.

For example, halfway through, the project has used approximately £7,200 of the £12,000 fee, but only around 50% of the planned work has been completed.

This is an early warning.

The Project Manager investigates the reason rather than simply allowing work to continue. It was discovered that additional coordination and design revisions required more engineering time than originally anticipated.

Commercial lesson: Budget monitoring allows potential overspend to be identified early enough for corrective action to be taken.

3. Managing Scope Change

The client subsequently requests an additional drainage design for an area that was not included within the original agreed scope.

Instead of completing the additional work automatically, the team reviews the original appointment.

The additional work is estimated to require:

Engineer: 10 hrs × £90 = £900
Graduate: 8 hrs × £65 = £520
CAD Technician: 6 hrs × £70 = £420

Additional resource requirement = £1,840

The consultancy therefore discusses the change with the client and agrees an additional fee before progressing.

Commercial lesson: Recognising scope change protects the consultancy from undertaking additional work without appropriate payment and provides transparency for the client.

4. Invoicing

The consultancy does not receive the entire £12,000 simply because the appointment has been agreed.

Invoices are raised in accordance with the agreed payment terms and progress.

If 75% of the original scope has been completed, for example, the Project Manager may assess whether approximately £9,000 of the original £12,000 fee can be invoiced, subject to the actual contractual payment arrangements.

The additional £1,840 variation would be invoiced in accordance with the separately agreed change.

Commercial lesson: Invoicing converts completed engineering work into revenue and is therefore fundamental to the financial performance and cash flow of a consultancy.

Turning This Into Evidence

Simply writing:

“I worked on project budgets and invoices.”

doesn't demonstrate much.

A stronger professional-development example would be:

“I monitored engineering resource expenditure against the agreed project fee and compared actual hours with the forecast resource requirements. When additional design work was requested, I reviewed the original scope to identify that the work represented a change and estimated the additional engineering resource required using staff charge-out rates. I supported the preparation of the additional fee and monitored subsequent progress against the revised budget. This developed my understanding of resource planning, budget control, change management and the relationship between technical delivery and commercial performance.”

The Key Takeaway

You don't need to be a Project Manager to start developing commercial ability.

Start paying attention to:

What is our fee? → What was included in our scope? → Who is doing the work? → How many hours were allowed? → How much have we spent? → Has the scope changed? → Are we being paid for additional work? → What can we invoice?

The moment you start asking these questions, you begin to understand the commercial side of engineering and not just the technical side.

 

What To Do Next

These articles are designed to help you build structured knowledge, professional awareness, and confidence, particularly in preparation for your Professional Review interview and written submissions.

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