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
Building Safety recap January, 2026
What we missed at the end of last year, and at the start of this...
National Apprenticeship Week 2026, 9-15 Feb
Shining a light on the positive impacts for businesses, their apprentices and the wider economy alike.
Applications and benefits of acoustic flooring
From commercial to retail.
From solid to sprung and ribbed to raised.
Strengthening industry collaboration in Hong Kong
Hong Kong Institute of Construction and The Chartered Institute of Building sign Memorandum of Understanding.
A detailed description fron the experts at Cornish Lime.
IHBC planning for growth with corporate plan development
Grow with the Institute by volunteering and CP25 consultation.
Connecting ambition and action for designers and specifiers.
Electrical skills gap deepens as apprenticeship starts fall despite surging demand says ECA.
Built environment bodies deepen joint action on EDI
B.E.Inclusive initiative agree next phase of joint equity, diversity and inclusion (EDI) action plan.
Recognising culture as key to sustainable economic growth
Creative UK Provocation paper: Culture as Growth Infrastructure.
Futurebuild and UK Construction Week London Unite
Creating the UK’s Built Environment Super Event and over 25 other key partnerships.
Welsh and Scottish 2026 elections
Manifestos for the built environment for upcoming same May day elections.
Advancing BIM education with a competency framework
“We don’t need people who can just draw in 3D. We need people who can think in data.”
Guidance notes to prepare for April ERA changes
From the Electrical Contractors' Association Employee Relations team.
Significant changes to be seen from the new ERA in 2026 and 2027, starting on 6 April 2026.
First aid in the modern workplace with St John Ambulance.
Solar panels, pitched roofs and risk of fire spread
60% increase in solar panel fires prompts tests and installation warnings.
Modernising heat networks with Heat interface unit
Why HIUs hold the key to efficiency upgrades.



























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