Delay notice
A delay notice is a formal communication issued by a contractor or subcontractor to notify the client (or sometimes the main contractor) of a delay that affects the progress of the construction works. This could be due to various reasons such as unforeseen site conditions, weather, supply chain issues and so on.This notice is a crucial part of project management and contractual compliance, as it informs the relevant parties about disruptions and helps manage expectations, mitigate risks, and assess potential impacts on project timelines and costs.
Many construction contracts, including standard forms like those from JCT (Joint Contracts Tribunal) or NEC (New Engineering Contract), include provisions that require contractors to issue a delay notice within a specified time frame once a delay is identified.
Proper documentation and record-keeping are critical. The delay notice should be well-documented, with all relevant evidence and supporting information to substantiate the claim of delay.
A typical delay notice might include:
- A detailed explanation of the cause and nature of the delay.
- The date the delay began and the estimated duration of the delay.
- Assessment of how the delay will affect the project’s timeline, milestones, and completion date.
- Steps being taken to mitigate the delay.
- Any requests for extensions of time (EOT) or additional resources.
Prompt issuance of a delay notice is essential. Contracts often specify a time limit within which the notice must be given after the contractor becomes aware of the delay. Failure to provide timely notice can affect the contractor's ability to claim an extension of time or additional costs.
The delay notice is typically the first step in the process of applying for an extension of time. If the delay is justified and beyond the contractor’s control, the contract administrator may grant an EOT, thereby adjusting the project schedule without imposing liquidated damages for late completion.
[edit] Related articles on Designing Buildings
- Acceleration.
- Compensation event.
- Concurrent delay.
- Contractor delay.
- Critical path.
- Culpable delay.
- Delay.
- Delay to completion.
- Delay to progress.
- Dispute resolution.
- Disruption claims in construction.
- Employer delay.
- Extension of time.
- International research into the causes of delays on construction projects.
- Liquidated damages.
- Long lead-time item.
- Programme.
- Relevant event.
- Relevant event v relevant matter.
- Relevant matter.
Featured articles and news
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.
Fire door compliance in UK commercial buildings
Architect and manufacturer gives their low down.
Plumbing and heating for sustainability in new properties
Technical Engineer runs through changes in regulations, innovations in materials, and product systems.
Awareness of the Carbon Border Adjustment Mechanism
What CBAM is and what to do about it.
The new towns and strategic environmental assessments
12 locations of the New Towns Taskforce reduced to 7 within the new towns draft programme and open consultation.
Buildings that changed the future of architecture. Book review.
The Sustainability Pathfinder© Handbook
Built environment agency launches free Pathfinder© tool to help businesses progress sustainability strategies.
Government outcome to the late payment consultation, ECA reacts.
IHBC 2025 Gus Astley Student Award winners
Work on the role of hewing in UK historic conservation a win for Jack Parker of Oxford Brookes University.
Future Homes Building Standards and plug-in solar
Parts F and L amendments, the availability of solar panels and industry responses.
How later living housing can help solve the housing crisis
Unlocking homes, unlocking lives.
Preparing safety case reports for HRBs under the BSA
A new practical guide to preparing structural inputs for safety cases and safety case reports published by IStructE.
Male construction workers and prostate cancer
CIOB and Prostate Cancer UK encourage awareness of prostate cancer risks, and what to do about it.






















