About us
Measuring beats guessing
An independent building diagnostics practice – run by the person who also comes to the site.

The expert
Jason Davis Kunz
Owner and expert in building diagnostics
Wir finden, was andere übersehen. Damit Sie morgen nicht die Folgen tragen.
Behind JDK Bauwerksdiagnostik there is no anonymous office but one person, who comes to the site, takes the measurements and writes the report himself. From the first enquiry to the handover of the report you deal with the same contact.
We investigate and we repair – but not on the same element. Where we produce a report that decides on remedial work, we do not carry out that work ourselves. We hold to that separation because a recommendation is worth only as much as it is free of self-interest – towards contractors, insurers and the courts.
What we stand for
Schäden erkennenUrsachen verstehenLösungen schaffen

Aus der Praxis
Wir messen selbst. Und wir stehen für das gerade, was wir messen.
Our standards
A finding is not an opinion
Building diagnostics means producing a robust picture of a building's condition from crack patterns, measured values and material samples. The difference between a good and a poor investigation rarely shows on the day of the site visit – it shows two years later, when the damage comes back.
So in every report we keep a clean line between what we measured and what we conclude from it. Where data is missing we write that down instead of filling the gap with experience. And where an investigation contributes nothing to the decision, we do not recommend it.
We work for public clients, housing companies, industry, property managers, private clients and lawyers – and in every case to the same standard.
How we work
From enquiry to completion
- 01
Enquiry and first conversation
You describe the problem – online through the enquiry form or by telephone. Within 48 hours on working days we come back to you with a first assessment.
- 02
Investigation plan and quotation
We determine which methods will actually answer the question and state scope, date and cost bindingly – without investigations nobody needs.
- 03
Investigation on site
Measurement and sampling at the building, arranged around your operations. We organise the access and safety equipment as well.
- 04
Evaluation and report
You receive a report that keeps findings and assessment cleanly apart, supports every statement with measured values and ends in a clear recommendation.
- 05
Support during the works
On request we support tendering, award and site supervision – so that the recommended measure is actually carried out as recommended.
First conversation
Get to know us at your building
A short conversation is usually enough to judge which investigation makes sense – and whether it is worth doing at all. And you speak directly to the expert who will later be on site.