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
The Association of Consultant Architects recap
A reintroduction and recap of ACA President; Patrick Inglis' Autumn update.
The Home Energy Model and its wrappers
From SAP to HEM, EPC for MEES and FHS assessment wrappers.
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
Delayed, derailed and devalued
How the UK’s planning crisis is undermining British manufacturing.
How much does it cost to build a house?
A brief run down of key considerations from a London based practice.
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.
AI-Driven automation; reducing time, enhancing compliance
Sustainability; not just compliance but rethinking design, material selection, and the supply chains to support them.
Climate Resilience and Adaptation In the Built Environment
New CIOB Technical Information Sheet by Colin Booth, Professor of Smart and Sustainable Infrastructure.
Turning Enquiries into Profitable Construction Projects
Founder of Develop Coaching and author of Building Your Future; Greg Wilkes shares his insights.
IHBC Signpost: Poetry from concrete
Scotland’s fascinating historic concrete and brutalist architecture with the Engine Shed.
Demonstrating that apprenticeships work for business, people and Scotland’s economy.
Scottish parents prioritise construction and apprenticeships
CIOB data released for Scottish Apprenticeship Week shows construction as top potential career path.
From a Green to a White Paper and the proposal of a General Safety Requirement for construction products.
Creativity, conservation and craft at Barley Studio. Book review.
The challenge as PFI agreements come to an end
How construction deals with inherited assets built under long-term contracts.
Skills plan for engineering and building services
Comprehensive industry report highlights persistent skills challenges across the sector.
Choosing the right design team for a D&B Contract
An architect explains the nature and needs of working within this common procurement route.
Statement from the Interim Chief Construction Advisor
Thouria Istephan; Architect and inquiry panel member outlines ongoing work, priorities and next steps.





























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