CASE STUDY - GEOTECHNICAL ENGINEER PI
When Project Profile Drives the Premium.
A geotechnical consultant working on landmark tunnelling and rail projects went to market for $5M PI. The pricing reflected the scale of the projects, not the size of the firm. Here's what infrastructure-level geotech PI actually looks like.
THE SITUATION
A Victorian geotechnical consultant with around 15 years of experience came to us for Professional Indemnity cover. The firm had annual revenue of around $1 million - a mid-sized geotech consultancy on paper.
The complexity was in the project profile. At the time of enquiry, the firm was actively working on major tunnelling and rail infrastructure projects in Melbourne - multi-billion dollar developments involving Tier 1 and Tier 2 contractors. The scope was pure consulting during the construction phase: no design, no certification - but the projects themselves were among the largest infrastructure works in the country.
The client held $5 million PI cover with an existing insurer and was looking for competitive alternatives.
OUR APPROACH
We took the risk to specialist underwriters active in the engineering PI market, presenting the full scope including the active mega-infrastructure project involvement. Given the revenue level and occupation profile, we knew this needed manual underwriting through specialist channels rather than platform-based options.
The submission made clear that the work was consulting-only - no design liability, no certification - and provided full details of the active project profile and contractor relationships.
THE CHALLENGE
From the specialist market, we obtained a formal quote: over $100,000 for $5 million PI cover.
That figure demands context. On a revenue-to-premium basis, it's roughly 10% - exceptionally high. But the driver isn't the consultant's revenue, experience, or claims history. It's the project profile.
When you're providing geotechnical consulting on multi-billion dollar tunnelling and rail infrastructure, the potential consequential loss from an error is enormous. A geotech miscalculation on a tunnelling project doesn't lead to a $50,000 remediation - it can lead to construction delays, redesigns, and downstream losses measured in the tens of millions. Insurers price to that tail risk, regardless of the consultant's size.
THE OUTCOME
We mapped the full pricing landscape for this risk and presented terms with a clear breakdown of why the market prices infrastructure-level geotech PI the way it does. The value here wasn't finding a cheap option - it was giving the consultant full visibility over what drives their premium and how to plan for it as their practice scales.
Infrastructure megaproject exposure is a fundamentally different risk universe from residential or standard commercial geotech work. Understanding the pricing drivers - project scale, consequential loss potential, Tier 1 contractor involvement - helps consultants budget accurately and make informed decisions about which projects to pursue.
This case illustrates several important market realities for geotechnical consultants working at the infrastructure end:
- Project profile drives premium: Two geotech firms with identical revenue can face vastly different PI costs depending on whether they work on residential subdivisions or billion-dollar tunnels
- Specialist underwriting is essential: Risks at this level need manual assessment by underwriters who understand infrastructure exposure - not automated platforms with hard caps on revenue or occupation
- A broker process provides clarity: Understanding exactly why the market prices a risk this way helps consultants plan their PI costs as their practice grows into larger projects
Put this placement in context
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Don't let compliance or complexity slow you down. Contact Tank Insurance to secure the limits and policy wording needed for your geotechnical practice.