Culpable delay in construction contracts
Construction contracts generally allow the construction period to be extended where there is a delay that is not the contractor's fault. This is described as an extension of time (EOT). The contractor may (but is not necessarily) also be entitled to claim for loss and expense associated with the delay.
Culpable delay (sometimes referred to as 'contractor delay') on the other hand is a delay that is entirely the fault of the contractor. Where the contractor is culpable for a delay, they have no entitlement to an extension of time or loss and expense.
Where there is a culpable delay, the period of time after the contractual date for completion has passed is referred to as the period of contractor culpable delay, and during this period, the contractor will be liable to pay liquidated and ascertained damages (LAD's) to the client.
Concurrent delay refers to the complex situation where more than one event occurs at the same time, but where not all of those events enable the contractor to claim an extension of time. For more information, see Concurrent delay.
In Carillion Construction Ltd. v Woods Bagot Europe Ltd. and others [2016], the Technology and Construction Court (TCC) held that a subcontractor who had caused a delay, was also entitled to an extension of time and that this should run contiguously from the contractual completion date. This meant that the subcontractor’s period of culpable delay was extinguished, and they were no longer liable for their own delay.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.
A safe energy transition – ECA launches a new Charter
Practical policy actions to speed up low carbon adoption while maintaining installation safety and competency.
Frank Duffy: Researcher and Practitioner
Reflections on achievements and relevance to the wider research and practice communities.
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.




















