Refine Projects AG
Lean Construction - Integrated Project Delivery - Digitale Transformation
Meet the team more

our mission: seeing stepping stones where others see obstacles

Developing, planning and building requires strong nerves - projects are highly complex, have high demands and are very resource-intensive. What if you could change all that?

refine is a consulting company that assists construction project teams to jointly develop solutions based on the lean philosophy and to maximise fun, innovation and value creation in construction. Our product is not software - but guidance for change processes, which always focus on the interaction between people.

How can we help you?

our services

Integrated project delivery (IPD)

To focus on the best possible outcome and a shared goal, right from the beginning. Best for project equals best for me.


A high performance team will always find a way to add value and make a project as predictable and lean as possible.

Building Information
Modelling (BIM)

By digitally transfroming your value chain, you are staying up to date and supporting your team in the best possible way.

refine vogel animation
bülent yildiz und claus nesensohn arme verschränkt refine Projects AG
Revolutionaries of the construction industry Bülent Yildiz und
Prof. Dr. Claus Nesensohn

Are you developing, planning or building?
We should talk in person
Call the founders

Your project is just as individual as our consulting approach - that's why you should simply give us a call. Together we can discuss how we can help you without obligation.

Our founders Bülent Yildiz and Prof. Dr. Claus Nesensohn are always happy to take time for you.

Bülent Yildiz - Call: +49 175 5826884 - LinkedIn
Prof. Dr. Claus Nesensohn - Call: +49 179 9789624 - LinkedIn

refine Tanay Karasan Spiegelung Logo auf bigbox

collaborate and create value the refine world

refine isn't just a consultancy that embodies the best qualities of a startup - it's an entire ecosystem.

Our teams in Stuttgart and Munich as well as refine Schweiz AG based in Zurich and refine West SAS in Paris are specialists for Lean Construction and integrated project delivery.

refineVVC (virtual value chain) based in Stuttgart consults partners and clients all over Europe in questions pertaining to digital transformation as well building information modeling.

We are also super proud of our partner network: we are currently executing joint projects with Generalplanung Archipel, Kohlbecker Gesamtplan GmbH, ConReal Swiss AG, Company Factory, ICT Facilities GmbH, RoxxTech GmbH, Vision Oy, Logifox GmbH

Lean Consulting hilft Bauunternehmen dabei, ihre Risiken zu minimieren und Fehler zu vermeiden.

Better together our refineTeam

You allow us to work with your team in order to affect change, build a high performance team and get more done, together. We know that this requires courage and trust. The #refineteam brings more to the table than deep subject matter knowledge, years of experience as well as passion for the tasks at hand - we also work in alignement with our values and the principles we teach. That's why we get to be your trusted partners in complex projects, creating maximized value together!

Get to know us
Why our partners are convinced


Jochen Ganzenmüller
Jochen Ganzenmüller Project manager
Boehringer Ingelheim Pharma GmbH & Co. KG
refine with its Last Planner system ensures maximum transparency and common understanding, especially in our complex project. These prerequisites are the basis for the entire project team to make the right decisions in terms of the project goals.
Christian​ Schmid
Christian​ Schmid CEO
Matthäus Schmid GmbH & Co. KG
It is fascinating to observe how even old "construction experts" integrate themselves into our Lean Construction System SchmidHochE (Schmid highly efficient), which we developed together with refine, and contribute their know-how in a positive way. Every project is an exciting process in which we are perfectly supported by refine Projects AG.
Michael Schranz
Michael Schranz CEO
Handler Bau GmbH
Lean Construction is becoming more and more important in the construction industry. For our competence development, it was important for us to have an experienced partner at our side. We were attracted by the consulting concept of refine, a company that lives the lean philosophy and focuses on cooperation at eye level.
Stephan Winn
Stephan Winn CEO
apoprojekt GmbH
I associate refine with energy, a high degree of sector-specific lean competence, but above all with passion, reliability and authenticity. For us, all these are essential ingredients for a long-term, respectful partnership, continuous development and joint success.
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17. episode refine your mind (set) How to Podcast