Concurrent delay remains one of the most complex issues in construction projects, with two landmark Australian cases continuing to influence how courts and practitioners approach this challenge.

Successful project delivery doesn’t happen by chance. Project advisory services play a vital role in ensuring construction and engineering projects are delivered on time, within budget, and to the required quality standards.

There are periods where delay risk sits in the background. As we sit here in mid-2026 with more macro uncertainty than ever thanks to the Iran War and inflation concerns that never really went away post-COVID, this is not the time to let delay risk go unchecked.

Float looks simple but in reality, it is anything but. When the Accura team supports clients with construction delay analysis, we see most construction programs show float but many do not explain it. Even less deal with it when delay hits.

A delay expert review of Probuild Constructions (Aust) Pty Ltd regarding the refurbishment of the Tank Stream Hotel in Sydney with  DDI Group Pty Ltd subcontracted under an amended AS 4303 subcontract. 

In Santos Limited v Fluor Australia Pty Ltd [2025] QSC 184, the Supreme Court of Queensland provides one of the clearest recent judicial statements on construction delay expert analysis.

Construction claims often fail because they do not clearly explain what happened on site. Van Oord UK Ltd v Allseas UK Ltd is a textbook example and a valuable lesson for quantum experts and delay experts in construction claims.

An important case where the decision supports parties resisting “first in time” concurrency arguments and reinforces a pragmatic, fact-driven approach to delay.

The Technology and Construction Court’s decision in Motherwell Bridge Construction Ltd v Micafil remains an important authority on delay analysis and the recovery of acceleration costs.

Whether a construction program forms part of the contract documentation depends on the provisions of the relevant standard form contract. Delay Expert, Andrew McKenna explores the relationship between program and contract.

Accura Delay Expert, Andrew McKenna explores the complexities contractors face when claiming damages for losses resulting from employer-induced project delays and the difficulties in proving and quantifying losses.

Van Oord v Allseas is a decade old but the lessons remain directly relevant to any quantity surveyor acting as an expert witness.

Delay analysis relies on evidence to prove cause and effect. Delay expert, Andrew McKenna explores two Australian cases to understand what Courts looks for and what makes the best delay analysis.

A delay expert view on a case that highlights the importance of robust project management, accurate programming, and transparent expert analysis in prosecuting and defending delay claims.

A recurring issue in determining Extension of Time entitlement is that the current baseline programme was not accepted by the Employer. Find out how that impacts delay analysis with this delay expert guide.

When delay claims reach court, one question dominates: what truly caused the delay, and can it be proved? In V601 Developments v Probuild, Justice Digby set the benchmark.

Santos v Fluor confirms that delay analysis is not an abstract exercise in software or spreadsheets. Delay Expert, Andrew McKenna explains how it is a forensic exercise rooted in evidence, requiring professional judgment, and clear reasoning.

Delay methodologies don’t always survive the evidence test. This case had as planned versus as built windows approach and a collapsed as built, or but for, analysis.

The dynamic critical path method makes demonstrating delay after the fact much easier. It negates the need to reconstruct the as-built programme so that a clear critical path can be demonstrated to prove Extension of Time entitlement.

Recent Australian mega-projects have experienced significant cost overruns due to unsuitable procurement methods, particularly fixed-price lump sum contracts that fail to accommodate project complexities and risks.