£1.2 million of additional value recovered following unforeseen ground conditions
Civil Engineering Contractor | Infrastructure Project
KEY DETAILS
CLIENT TYPE
Civil engineering contractor
SECTOR
Infrastructure
PROJECT SCOPE
Civil engineering and construction works
CONTRACT SUM
£20 million
FORM OF CONTRACT
NEC4 Engineering and Construction Contract Option A
COMMERCIAL ISSUE
Unforeseen physical conditions, additional cost and programme delay
ADDITIONAL VALUE RECOVERED
£1.2 million
PRIMARY SERVICE AREAS
Contractual Risk & Entitlement Strategy; Margin Protection & Revenue Recovery; Commercial Troubleshooting & Intervention
Introduction
A civil engineering contractor encountered unforeseen physical conditions during construction that were materially different from those anticipated at tender stage.
The conditions created significant additional cost, disrupted the planned programme and exposed the contractor to the risk of absorbing substantial unplanned expenditure.
Roxburgh Murray identified the contractor’s entitlement under the NEC Compensation Event provisions, prepared the required notices, valued the full commercial impact and negotiated directly with the client.
The result was the recovery of £1.2 million of additional commercial value, together with the appropriate Extension of Time.
The situation
During construction, the contractor encountered physical ground conditions that materially differed from those reasonably anticipated when the project was priced and planned.
The unforeseen conditions affected the contractor’s intended construction methodology and created additional work, cost and programme pressure.
Without a clear contractual strategy, the contractor risked carrying the full impact of conditions that had not been allowed for at tender stage.
Roxburgh Murray was brought in to review the contractual position, establish whether a Compensation Event existed and determine the full value of the contractor’s entitlement.
The commercial risk
Unforeseen ground conditions can create significant commercial exposure.
The contractor faced the risk of:
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Absorbing substantial additional cost
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Losing value through delayed or incomplete notification
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Carrying programme delay without an Extension of Time
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Reduced productivity
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Increased labour, plant and supervision costs
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Disruption to the planned construction methodology
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Pressure on project cashflow
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A weaker final account position
The issue was not simply that the conditions were more difficult than expected.
The key commercial question was whether the conditions met the contractual test for a Compensation Event and whether the contractor could evidence the full financial and programme impact.
Without that entitlement being established and properly valued, significant value could have been lost.
Roxburgh Murray’s review
Roxburgh Murray reviewed the NEC4 contract, tender assumptions, available site information and the actual conditions encountered during construction.
The analysis established that the physical conditions materially differed from those the contractor could reasonably have anticipated at tender stage.
This provided a contractual basis for recovery under the NEC Compensation Event provisions.
Roxburgh Murray then assessed the full impact of the conditions, including additional work, revised methodology, labour and plant requirements, programme delay, prolongation and wider project disruption.
This allowed the contractor to move from a position of significant exposure to a clearly defined and evidenced entitlement.
The Roxburgh Murray approach
Roxburgh Murray developed and led a structured commercial recovery strategy.
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Reviewing the NEC4 contract
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Assessing the tender and pre-contract information
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Comparing anticipated and actual physical conditions
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Identifying the relevant Compensation Event provisions
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Preparing and issuing the required contractual notices
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Assessing the effect on construction methodology
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Valuing the additional labour, plant, materials and management input
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Demonstrating the programme impact
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Preparing a fully substantiated Compensation Event quotation
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Negotiating directly with the client
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Supporting the contractor through to agreement
The strength of the approach came from connecting the physical event to the contract, programme and full commercial impact.
The objective was not simply to recover isolated costs. It was to recover the complete value of the change.
The outcome
The contractor’s entitlement was successfully established and agreed.
The outcome included £1.2 million of additional value recovered and the appropriate Extension of Time.
The recovery protected the contractor’s commercial outcome and ensured that the impact of the unforeseen conditions was not left as an unrecoverable project cost.
What this shows
This case demonstrates why unforeseen conditions require an immediate contract-led response.
Encountering difficult ground does not automatically guarantee recovery. The contractor must establish that the conditions meet the contractual test, issue the correct notices, evidence the difference from what was anticipated and demonstrate the resulting cost and programme impact.
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Identify the correct Compensation Event
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Protect contractual entitlement
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Evidence the unforeseen conditions
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Value the full commercial impact
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Secure additional time
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Pressure on project cashflow
The director-level lesson is clear:
Unforeseen conditions create commercial entitlement only when the contract, evidence, valuation and programme impact are brought together in a robust recovery strategy.
Why it matters to construction leaders
Ground conditions are one of the most common sources of construction cost and programme exposure.
The commercial impact can escalate quickly through additional excavation, revised methodology, increased plant requirements, slower productivity, redesign and extended site duration.
For directors and commercial leaders, this case highlights the importance of asking:
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Were the conditions reasonably foreseeable?
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What information was available at tender stage?
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Does the event meet the contractual test?
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Have the required notices been issued?
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Is the full programme effect being captured?
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Are indirect and prolongation costs included?
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Is the business recovering the complete value of the impact?
Roxburgh Murray helps clients answer those questions before entitlement is weakened or value is missed.
Related services
Roxburgh Murray reviews contracts and project information to identify entitlement routes, risk allocation and the notices required to protect the contractor’s position.
When unexpected site conditions create immediate cost and programme pressure, Roxburgh Murray provides focused support to assess the position and develop a practical recovery strategy.
Roxburgh Murray helps clients identify, substantiate and recover the full commercial value arising from unforeseen conditions, change and delay.
Roxburgh Murray supports commercial negotiations with robust evidence, clear contractual reasoning and fully substantiated valuations.
Have unforeseen site conditions changed the commercial position of your project?
If unexpected ground conditions, existing structures or site constraints are increasing cost or delaying progress, early contractual review is essential. Roxburgh Murray can assess entitlement, prepare the required notices, value the full impact and help recover the additional value your business is due.