Construction delays are not always caused by one side. Sometimes the contractor and owner both contribute to the delay during the same period. This is known as concurrent delay. It can make responsibility, entitlement, and damages harder to evaluate because the project impact is shared.
Strong construction claims need a clear review of timing, causation, schedule impact, and records. If both sides caused delay, the question becomes how each delay affected the critical path and whether either party is entitled to more time or money.
What Is Concurrent Delay
Concurrent delay happens when two or more delays occur during the same time period and affect project progress. One delay may be caused by the contractor, while another may be caused by the owner, designer, supplier, or another project condition.
A construction delay expert reviews whether the delays truly overlapped and whether they affected critical path work. This is important because not every delay happening at the same time is concurrent. The delays must impact project completion in a meaningful way.
How Concurrent Delays Are Identified
Concurrent delays are identified through schedule updates, daily records, meeting minutes, correspondence, notices, and progress reports. Experts compare planned work with actual progress to determine which activities controlled the project timeline.
A delay expert witness may review:
- Baseline schedules
- Schedule updates
- Critical path movement
- Delay notices
- Project correspondence
- Field records
- Change documentation
- Cost records
This review helps separate real concurrent delay from general project disruption or non-critical delay.
How Responsibility Is Shared
When both sides are responsible, the analysis must separate each delay event. The goal is to understand who caused what, when it happened, and how it affected the project.
If the owner delayed approvals while the contractor also failed to maintain manpower, both events may need review. If both affected critical activities at the same time, responsibility may be shared. If one event affected only non-critical work, it may not change entitlement.
This is why clear project records matter. Weak documentation can make responsibility harder to prove.
How Time Extensions Are Affected
Concurrent delay can affect entitlement to time extensions. A contractor may still receive additional time if an owner-caused delay affected the critical path. However, the contractor may not always recover delay damages if their own delay also contributed to the same period.
Contract terms are important here. Some contracts include specific rules for concurrent delay. Others require detailed interpretation through schedule analysis and project records.
How Delay Damages Are Evaluated
A delay damages expert reviews whether claimed costs are connected to a specific delay event. When both sides contributed to the delay, damages may become harder to recover because responsibility is not fully one-sided.
A San Diego delay damages expert witness can help evaluate extended general conditions, labor inefficiency, equipment costs, acceleration costs, and other time-related damages. The key is proving which costs were caused by recoverable delay and which were tied to contractor responsibility.
Disruption May Still Matter
Concurrent delay does not always erase disruption. A project may still suffer resequencing, trade stacking, interrupted workflow, access issues, or productivity loss.
Construction disruption analysis helps determine whether shared delay periods also created measurable disruption impacts. This can be important when the project continues, but work becomes less efficient.
Protecting Your Position
When concurrent delay appears, teams should act quickly. Contractors and owners should document delay events, send timely notices, update schedules accurately, and keep records of decisions, impacts, and mitigation efforts.
Clear documentation helps show:
- What happened
- When it happened
- Who caused it
- Which work was affected
- Whether the critical path changed
- What costs followed
Strengthen Concurrent Delay Review With HPM Consultants
At HPM Consultants, we help contractors, owners, and legal teams evaluate concurrent delays through schedule review, damages analysis, disruption review, and expert claim support. We focus on clear evidence, disciplined analysis, and practical dispute guidance.
Contact us to strengthen your concurrent delay position and better understand shared responsibility in construction disputes.
