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  "query": "NEC4 quotation response deadlines and deemed acceptance cost risk 2026 UK construction market",
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    {
      "url": "https://www.gatherinsights.com/en/nec4/response-periods",
      "title": "NEC4 Response Periods: Complete Deadlines Guide - Gather Insights",
      "content": "Platform\n\nPlanRecordReportQS AI Agent\n\nFor ContractorsFor ClientsCustomer Stories\n\nSign inBook a Demo\n\n1. Home\n2. NEC4 Guide\n3. Response Periods\nNEC4\n\n# NEC4 Response Periods: Complete Deadlines Reference\n\nNEC4 contains 30 or more separate time obligations scattered across its clauses. Some are fixed in the contract. Others are set in Contract Data. Miss any one of them and the consequences range from permanently lost entitlement to accidental acceptance of a position you never intended.\n\nWill Doyle\n\nWill Doyle\n\n22 February 2026 · 7 min read\n\nIn this article\n\n Fixed vs Contract Data Periods\n Complete Reference Table\n The CE Response Chain\n Deemed Acceptance\n Programme, Design and Payment\n Worked Example\n Five Common Mistakes\n FAQs [...] Stage 3: Assessment (clause 62). The PM has two weeks from the Contractor's last submitted quotation to respond. The PM may accept the quotation, instruct a revised quotation, or make their own assessment under clause 64. If the PM does not reply within two weeks, the Contractor may notify the PM that the quotation is treated as accepted. The Contractor must actively issue this notification — deemed acceptance is not triggered automatically by the passage of time. Once the Contractor issues the notification, the quotation is accepted and the change to the Prices, Completion Date, and Key Dates is final.\n\n## Deemed Acceptance: When Silence Becomes Consent [...] ## Deemed Acceptance: When Silence Becomes Consent\n\nNEC4 contains specific provisions that treat a party's failure to respond as agreement to the other party's position. These are not general principles — they apply only where the contract explicitly creates the deeming mechanism. There are two in the CE process.\n\n| Situation | Deemed Outcome | Clause | Automatic? |\n ---  --- |\n| PM does not respond to CE notification within one week | Notification treated as accepted | 61.4 | Yes — no further action needed |\n| PM does not respond to CE quotation within two weeks | Quotation treated as accepted | 62.6 | No — Contractor must notify the PM |\n| PM does not respond to revised CE quotation within two weeks | Revised quotation treated as accepted | 62.6 | No — Contractor must notify the PM |",
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    {
      "url": "https://archdesk.com/blog/jct-nec-contracts-uk-guide-2026",
      "title": "JCT vs NEC for UK Construction in 2026 - Archdesk",
      "content": "#### NEC's Strict Time Bars\n\nNEC contracts are renowned for their strict \"time bars.\" Many clauses stipulate precise time periods within which actions must be taken (e.g., notifying a compensation event within eight weeks of becoming aware of it). Failure to comply with these time limits can result in the loss of entitlements entirely, regardless of the merit of the underlying claim. This applies to both the contractor (for claims) and the Project Manager (for responses, where inaction can be deemed acceptance of the contractor's quotation). These stringent requirements make diligent, real-time contract administration absolutely essential for all parties involved in an NEC project. [...] NEC uses the term \"compensation event\" to encompass not only changes to the scope but also a wide range of other events that might impact the contractor's time and/or cost. This includes instructions from the Project Manager, employer-caused delays, unforeseen physical conditions, and certain weather events. The key differentiator is that compensation events are intended to be assessed \"prospectively.\" The contractor submits a quotation detailing both the time and cost impacts of the event, and the Project Manager assesses this before the work associated with the compensation event is carried out. This aims to create clarity and agreement on the impact of changes before they are implemented, significantly reducing the potential for disputes at project closeout. Strict timeframes apply for [...] #### Automated Reminders and Workflows\n\n  Software can be configured with pre-defined NEC/JCT notice templates, workflows, roles, and permissions. This enables automated alerts and reminders for critical deadlines, such as issuing early warning notices, responding to compensation event quotations, submitting payment applications, or issuing payment/pay less notices. This proactive functionality significantly reduces the risk of missing vital deadlines, which is particularly critical under NEC's strict time bars.\n #### Centralized Communication and Audit Trails",
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    {
      "url": "https://www.necplanningsolutions.co.uk/post/nec4-compensation-event-time-bar-and-the-ce-clock-clauses-61-and-62-explained",
      "title": "NEC4 Compensation Event Time Bar and the CE Clock: Clauses 61 and 62 Explained",
      "content": "References\n\n1. NEC Contracts, “Time-barred compensation events” (FAQ). Accessed 25 February 2026.\n2. NEC Contracts, “Accepting quotations in a timely manner” (FAQ). Accessed 25 February 2026.\n3. NEC Contracts, “When and why NEC project managers have to assess compensation events” (news article, 28 June 2022). Accessed 25 February 2026.\n4. Northern Ireland Housing Executive v Healthy Buildings Ltd  NIQB 124.\n5. Northern Ireland Housing Executive v Healthy Buildings (Ireland) Ltd  NICA 27.\n6. Brodies LLP, “Does the 8-week time limit for notification apply to all compensation events (CEs)?” (11 June 2021). Accessed 25 February 2026.\n7. Fenwick Elliott, “NEC3: The time bar on compensation for contractors” (commentary). Accessed 25 February 2026.\n\n## Recent Posts\n\nSee All [...] This email is notice of failure to reply. Please provide your response in accordance with the contract.\n\nCommon mistakes that cause avoidable trouble\n\n1. Waiting for full impact before notifying. Notify the event, then price it.\n2. Treating an instruction email as a CE notice. Issue a separate notice with its own reference.\n3. Letting reply deadlines drift. Track the PM reply date and use Clause 62.6 steps when needed.\n4. Submitting quotations that are hard to decide. Use a repeatable pack with a clear decision request and clean evidence.\n\nReferences [...] What Clause 62 actually does\n\nClause 62 is the quotation and decision cycle. It sets a controlled sequence:\n\n1. The Project Manager instructs the Contractor to submit a quotation.\n2. The Contractor submits within the stated time. NEC guidance notes the standard ECC position is three weeks from instruction unless extended.\n3. The Project Manager replies within the period for reply in the Contract Data, or moves to their own assessment route where the contract allows.\n4. If the Project Manager fails to reply in time, Clause 62.6 provides a mechanism where the Contractor notifies the failure to reply, and if the Project Manager continues to fail to reply for two weeks after that, the quotation is treated as accepted and then implemented.",
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    {
      "url": "https://medium.com/@nihanthreddy65/why-nec-contracts-are-revolutionizing-uk-construction-and-what-you-need-to-know-38de679222c8",
      "title": "Why NEC Contracts Are Revolutionizing UK Construction (And What ...",
      "content": "Misunderstanding the Deemed Acceptance Mechanism:\n\nNEC4 introduced provisions where programmes can be “deemed accepted” if project managers don’t respond within contractual periods. This protects contractors from indefinite limbo but requires diligent programme review from project managers. Missing response deadlines can accidentally lock in programmes that need revision.\n\nIgnoring Early Warnings:\n\nSome teams still treat early warnings skeptically — as attempts to establish blame or pre-position for claims. This completely misses the point and violates the collaborative spirit. Early warnings are mutual benefit tools. Ignoring them or using them adversarially undermines the entire contract philosophy.\n\nThe Time Bar Reality: [...] # Why NEC Contracts Are Revolutionizing UK Construction (And What You Need to Know) | by nihanth reddy | Medium\n\nSitemap\n\nOpen in app\n\nSign up\n\nSign in\n\n\n\nImage 2: nihanth reddy\n\nnihanth reddy\n\nFollow\n\n14 min read\n\n·\n\nJan 19, 2026\n\n that allocate risk differently:\n\nOptions A & B: Priced Contracts\n\nThese are essentially fixed-price agreements. Option A uses an Activity Schedule where contractors list work activities and prices. Payment happens only when complete activities are finished and defect-free. Option B uses a traditional Bill of Quantities with re-measurement — if actual quantities differ from estimates, payment adjusts accordingly.\n\nWith Option A, contractors carry the quantity risk. With Option B, clients carry it.\n\nOptions C & D: Target Cost Contracts [...] Remember me for faster sign in\n\n \n\nValue Engineering:\n\nNEC4 introduced a value engineering percentage allowing savings from contractor-led proposals to be shared in priced contracts. This encourages innovation even in fixed-price scenarios.\n\nTechnology Integration:\n\nNEC4 explicitly accommodates modern construction technology, including Building Information Modeling (BIM). The contract recognizes that digital collaboration tools and data-rich 3D models are now central to project delivery.\n\nPayment Application Requirements:\n\nNEC3 allowed contractors to optionally submit payment applications. NEC4 makes this mandatory, with project managers gaining powers to assess if no application arrives. This ensures payment processes keep moving.\n\nPress enter or click to view image in full size",
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    {
      "url": "https://www.alambassociates.com/nec3-vs-nec4-whats-changed/",
      "title": "NEC3 vs NEC4 – What's changed? - A Lamb Associates Limited",
      "content": "This issue is addressed within NEC4 as there is now an option for price options to include an agreed value engineering percentage. This provides for the prices to be reduced by the assessed value of the resulting compensation event multiplied by the agreed value engineering percentage.\n\n### Programme Acceptance\n\nThe NEC3 failed to address non acceptance of the programme by the Project Manager. In the absence of a Project Manager’s response, the contract provided that the programme was simply ‘not accepted’.\n\nThe NEC4 improves upon this position. The contract includes a provision whereby in the absence of a Project Manager’s response, the contractor can serve notice of a further week. After this, if there is still no response then the contractor’s programme is deemed accepted. [...] ### Preparation of Compensation Events Costs\n\nUnder  NEC3 Options A and B, the Contractor could not recover the cost of preparing quotations for CEs, which were specifically excluded from the definition of Defined cost. (Under other NEC Options this was treated as Defined Cost).\n\nNEC4 incorporates feedback from contractors that this is unfair. This exclusion has been deleted and the cost of preparing compensation events is now recoverable under all Options.\n\nFurthermore, NEC4 allows recovery of costs even where the PM proposes an instruction which is not accepted. This has been addressed by the introduction of new CE clause 60(1)(20) (“where the PM notifies the Contractor that a quotation for a proposed instruction is not accepted”).\n\n### Dividing date",
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  "formatted": "Source: NEC4 Response Periods: Complete Deadlines Guide - Gather Insights\nURL: https://www.gatherinsights.com/en/nec4/response-periods\nPlatform PlanRecordReportQS AI Agent For ContractorsFor ClientsCustomer Stories Sign inBook a Demo 1. Home 2. NEC4 Guide 3. Response Periods NEC4 # NEC4 Response Periods: Complete Deadlines Reference NEC4 contains 30 or more separate time obligations scattered across its clauses. Some are fixed in the contract. Others are set in Contract Data. Miss any one of them and the consequences range from permanently lost entitlement to accidental acceptance of a position you never intended. Will Doyle Will Doyle 22 February 2026 · 7 min read In this article Fixed vs Contract Data Periods Complete Reference Table The CE Response Chain Deemed Acceptance Programme, Design and Payment Worked Example Five Common Mistakes FAQs [...] Stage 3: Assessment (clause 62). The PM has two weeks from the Contractor's last submitted quotation to respond. The PM may accept the quotation, instruct a revised quotation, or make their own assessment under clause 64. If the PM does not reply within two weeks, the Contractor may notify the PM that the quotation is treated as accepted. The Contractor must actively issue this notification — deemed acceptance is not triggered automatically by the passage of time. Once the Contractor issues the notification, the quotation is accepted and the change to the Prices, Completion Date, and Key Dates is final. ## Deemed Acceptance: When Silence Becomes Consent [...] ## Deemed Acceptance: When Silence Becomes Consent NEC4 contains specific provisions that treat a party's failure to respond as agreement to the other party's position. These are not general principles — they apply only where the contract explicitly creates the deeming mechanism. There are two in the CE process. | Situation | Deemed Outcome | Clause | Automatic? | --- --- | | PM does not respond to CE\n\n---\n\nSource: JCT vs NEC for UK Construction in 2026 - Archdesk\nURL: https://archdesk.com/blog/jct-nec-contracts-uk-guide-2026\n#### NEC's Strict Time Bars NEC contracts are renowned for their strict \"time bars.\" Many clauses stipulate precise time periods within which actions must be taken (e.g., notifying a compensation event within eight weeks of becoming aware of it). Failure to comply with these time limits can result in the loss of entitlements entirely, regardless of the merit of the underlying claim. This applies to both the contractor (for claims) and the Project Manager (for responses, where inaction can be deemed acceptance of the contractor's quotation). These stringent requirements make diligent, real-time contract administration absolutely essential for all parties involved in an NEC project. [...] NEC uses the term \"compensation event\" to encompass not only changes to the scope but also a wide range of other events that might impact the contractor's time and/or cost. This includes instructions from the Project Manager, employer-caused delays, unforeseen physical conditions, and certain weather events. The key differentiator is that compensation events are intended to be assessed \"prospectively.\" The contractor submits a quotation detailing both the time and cost impacts of the event, and the Project Manager assesses this before the work associated with the compensation event is carried out. This aims to create clarity and agreement on the impact of changes before they are implemented, significantly reducing the potential for disputes at project closeout. Strict timeframes apply for [...] #### Automated Reminders and Workflows Software can be configured with pre-defined NEC/JCT notice templates, workflows, roles, and permissions. This enables automated alerts and reminders for critical deadlines, such as issuing early warning notices, responding to compensation event quotations, su\n\n---\n\nSource: NEC4 Compensation Event Time Bar and the CE Clock: Clauses 61 and 62 Explained\nURL: https://www.necplanningsolutions.co.uk/post/nec4-compensation-event-time-bar-and-the-ce-clock-clauses-61-and-62-explained\nReferences 1. NEC Contracts, “Time-barred compensation events” (FAQ). Accessed 25 February 2026. 2. NEC Contracts, “Accepting quotations in a timely manner” (FAQ). Accessed 25 February 2026. 3. NEC Contracts, “When and why NEC project managers have to assess compensation events” (news article, 28 June 2022). Accessed 25 February 2026. 4. Northern Ireland Housing Executive v Healthy Buildings Ltd NIQB 124. 5. Northern Ireland Housing Executive v Healthy Buildings (Ireland) Ltd NICA 27. 6. Brodies LLP, “Does the 8-week time limit for notification apply to all compensation events (CEs)?” (11 June 2021). Accessed 25 February 2026. 7. Fenwick Elliott, “NEC3: The time bar on compensation for contractors” (commentary). Accessed 25 February 2026. ## Recent Posts See All [...] This email is notice of failure to reply. Please provide your response in accordance with the contract. Common mistakes that cause avoidable trouble 1. Waiting for full impact before notifying. Notify the event, then price it. 2. Treating an instruction email as a CE notice. Issue a separate notice with its own reference. 3. Letting reply deadlines drift. Track the PM reply date and use Clause 62.6 steps when needed. 4. Submitting quotations that are hard to decide. Use a repeatable pack with a clear decision request and clean evidence. References [...] What Clause 62 actually does Clause 62 is the quotation and decision cycle. It sets a controlled sequence: 1. The Project Manager instructs the Contractor to submit a quotation. 2. The Contractor submits within the stated time. NEC guidance notes the standard ECC position is three weeks from instruction unless extended. 3. The Project Manager replies within the period for reply in the Contract Data, or moves to their own assessment route where the contract \n\n---\n\nSource: Why NEC Contracts Are Revolutionizing UK Construction (And What ...\nURL: https://medium.com/@nihanthreddy65/why-nec-contracts-are-revolutionizing-uk-construction-and-what-you-need-to-know-38de679222c8\nMisunderstanding the Deemed Acceptance Mechanism: NEC4 introduced provisions where programmes can be “deemed accepted” if project managers don’t respond within contractual periods. This protects contractors from indefinite limbo but requires diligent programme review from project managers. Missing response deadlines can accidentally lock in programmes that need revision. Ignoring Early Warnings: Some teams still treat early warnings skeptically — as attempts to establish blame or pre-position for claims. This completely misses the point and violates the collaborative spirit. Early warnings are mutual benefit tools. Ignoring them or using them adversarially undermines the entire contract philosophy. The Time Bar Reality: [...] # Why NEC Contracts Are Revolutionizing UK Construction (And What You Need to Know) | by nihanth reddy | Medium Sitemap Open in app Sign up Sign in Image 2: nihanth reddy nihanth reddy Follow 14 min read · Jan 19, 2026 that allocate risk differently: Options A & B: Priced Contracts These are essentially fixed-price agreements. Option A uses an Activity Schedule where contractors list work activities and prices. Payment happens only when complete activities are finished and defect-free. Option B uses a traditional Bill of Quantities with re-measurement — if actual quantities differ from estimates, payment adjusts accordingly. With Option A, contractors carry the quantity risk. With Option B, clients carry it. Options C & D: Target Cost Contracts [...] Remember me for faster sign in Value Engineering: NEC4 introduced a value engineering percentage allowing savings from contractor-led proposals to be shared in priced contracts. This encourages innovation even in fixed-price scenarios. Technology Integration: NEC4 explicitly accommodates modern constru\n\n---\n\nSource: NEC3 vs NEC4 – What's changed? - A Lamb Associates Limited\nURL: https://www.alambassociates.com/nec3-vs-nec4-whats-changed/\nThis issue is addressed within NEC4 as there is now an option for price options to include an agreed value engineering percentage. This provides for the prices to be reduced by the assessed value of the resulting compensation event multiplied by the agreed value engineering percentage. ### Programme Acceptance The NEC3 failed to address non acceptance of the programme by the Project Manager. In the absence of a Project Manager’s response, the contract provided that the programme was simply ‘not accepted’. The NEC4 improves upon this position. The contract includes a provision whereby in the absence of a Project Manager’s response, the contractor can serve notice of a further week. After this, if there is still no response then the contractor’s programme is deemed accepted. [...] ### Preparation of Compensation Events Costs Under NEC3 Options A and B, the Contractor could not recover the cost of preparing quotations for CEs, which were specifically excluded from the definition of Defined cost. (Under other NEC Options this was treated as Defined Cost). NEC4 incorporates feedback from contractors that this is unfair. This exclusion has been deleted and the cost of preparing compensation events is now recoverable under all Options. Furthermore, NEC4 allows recovery of costs even where the PM proposes an instruction which is not accepted. This has been addressed by the introduction of new CE clause 60(1)(20) (“where the PM notifies the Contractor that a quotation for a proposed instruction is not accepted”). ### Dividing date"
}