Time at large
Construction contracts will usually include a date by which the works described in the contract should be completed. This is generally the date by which practical completion must be certified.
The phrase ‘time at large’ describes the situation where there is no date for completion, or where the date for completion has become invalid. The contractor is then no longer bound by the obligation to complete the works by a certain date.
Time can become at large because there is no clear completion date specified in the contract, or can be a situation that arises as a result of events (typically by agreement of the parties or by failure of the contract ‘machinery’), or if the contract does not allow the construction period to be extended.
It is not uncommon on construction projects that the works are not completed by the date for completion. If this is because of delays for which the contractor is responsible, then the contract will generally include a provision for them to pay liquidated damages to the client. These are pre-determined damages based on a calculation of the actual loss that the client is likely to incur if the contractor fails to meet the completion date. Some contracts require that a certificate of non-completion is issued as a pre-requisite to deducting liquidated damages.
If the works are delayed because of events for which the client is responsible (an act of prevention) or by agreed neutral events, the contracts will generally provide for an extension of time to be granted, changing the completion date (see relevant events). If contracts did not allow the construction period to be extended under such circumstances, then time would be at large. The client would then not be able to claim liquidated damages from the contractor as there would be no date against which they could be calculated and the contractor would then only have to complete the works in a 'reasonable' time. The client would only be entitled to damages if they could establish that the contract was not completed within a reasonable time.
It is important therefore that clauses describing relevant events cover all necessary eventualities, otherwise if an event occurs that is not covered, time will be at large.
NB: Construction contracts generally include a provision requiring that the contractor proceeds ‘regularly and diligently’ irrespective of whether it is apparent that the completion date will be achieved.
NB: NEC contracts refer to ‘compensation events’ rather than ‘relevant events’. Both parties must give early warning of anything that may delay the works, or increase costs. They should then hold an early warning meeting to discuss how to avoid or mitigate impacts on the project. In the case of a compensation event, if the contractor fails to give early warning of a possible delay to the works, or increase in costs, they will only be compensated for effects that would have remained even if they had given early warning.
[edit] Related articles on Designing Buildings Wiki
- Compensation event.
- Concurrent delay.
- Extension of time.
- Just-in-time manufacturing.
- Liquidated damages.
- Relevant event.
- Time of the essence.
[edit] External references
- Multiplex Construction v Honeywell Control Systems.
- Time at Large - an Explanation, Andy Hewitt.
Featured articles and news
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.
The changed R&D tax landscape for Architects
Specialist gives a recap on tax changes for Research and Development, via the ACA newsletter.
Structured product data as a competitive advantage
NBS explain why accessible product data that works across digital systems is key.
Welsh retrofit workforce assessment
Welsh Government report confirms Wales faces major electrical skills shortage, warns ECA.
A now architectural practice looks back at its concept project for a sustainable oceanic settlement 25 years on.
Copyright and Artificial Intelligence
Government report and back track on copyright opt out for AI training but no clear preferred alternative as yet.
Embedding AI tools into architectural education
Beyond the render: LMU share how student led research is shaping the future of visualisation workflows.
Why document control still fails UK construction projects
A Chartered Quantity Surveyor explains what needs to change and how.
Inspiration for a new 2026 wave of Irish construction professionals.
New planning reforms and Warm Homes Bill
Take centre stage at UK Construction Week London.




























Comments
To start a discussion about this article, click 'Add a comment' above and add your thoughts to this discussion page.