Dion is a cost estimator at ZÜBLIN.

What exactly does the term ‘calculate’ mean?

I’ve always explained it to my daughter like this: I’m a sort of translator. I translate the architects’ drawings – that is, the design drawings – into figures. More precisely, into a budget. That sounds simple, but it’s actually an art form. Because a single line on the plan can mean 100 euros – or 1,000 euros. You have to understand exactly what’s been drawn there, how it can be implemented technically, and what work is required to achieve it. Only once I’ve understood that can I draw up a cost estimate that will actually work on the building site later on.

What do you find exciting about your job?

The fact that every project is bespoke. This means that, even whilst drawing up the cost estimate, I have to visualise how the construction project will unfold later on site. I think ‘ahead’ in practical terms – what happens when, in what order, and how much effort will it take? This requires technical knowledge and creativity in equal measure. And it’s precisely this combination that makes my job so exciting. It’s not just about numbers. You can only produce a good cost estimate if you also understand how the building work is carried out.

How do you solve problems?

I generally take a systematic, calm and objective approach. In doing so, I try to consider different perspectives – for example, those of the client, the architects and the tradespeople carrying out the work. This helps me to think through the issue holistically and find viable solutions.

What skills do you need to do your job?

You need a certain amount of organisational skill, technical understanding and a willingness to take on responsibility. Making decisions is part of day-to-day life – you don’t always make them lightly, but you must be able to make them. It is also important to communicate clearly and confidently, both in writing and in face-to-face discussions with other departments or partners. And: keep a cool head – even under pressure.

What personal background do you bring to this job?

As I was born in the Netherlands, I studied civil engineering at Eindhoven University of Technology in the Netherlands and have been working in Germany since 1995 – specialising in turnkey construction cost estimation from the very beginning. In 2013, I joined ZÜBLIN and now head up the cost estimation team for turnkey construction in Munich.

What career advice would you give your younger self?

Be patient and do a good job. I’m convinced that anyone who consistently does a good job will be rewarded for it. It’s worth sticking at it.

To sum up: Which three words would you use to describe your job?

Exciting, challenging, creative. Every cost estimate is different – because every project is unique. That’s what makes the job incredibly varied.

For you, building a better future means...

Building in a way that conserves resources, is sustainable and safe. As a quantity surveyor, I can make a difference here by, for example, suggesting alternative construction methods or more efficient materials – so that building projects are not only cost-effective but also sustainable.

Delve even deeper into Dion’s world of calculation: