{
  "query": "NEC4 quotation response deadlines and deemed acceptance cost risk 2026 UK construction market",
  "claims": [
    {
      "claim": "Under NEC4, the Project Manager (PM) has two weeks to respond to a Contractor's compensation event quotation, after which the Contractor can trigger a deemed acceptance process.",
      "verbatim_quote": "The PM has two weeks from the Contractor's last submitted quotation to respond. ... If the PM does not reply within two weeks, the Contractor may notify the PM that the quotation is treated as accepted.",
      "source_url": "https://www.gatherinsights.com/en/nec4/response-periods",
      "relevance": "high"
    },
    {
      "claim": "Deemed acceptance of a quotation is not automatic; the Contractor must actively issue a notification of the PM's failure to reply.",
      "verbatim_quote": "The Contractor must actively issue this notification — deemed acceptance is not triggered automatically by the passage of time.",
      "source_url": "https://www.gatherinsights.com/en/nec4/response-periods",
      "relevance": "high"
    },
    {
      "claim": "Once a quotation is deemed accepted via the notification process, the changes to Prices and dates are final.",
      "verbatim_quote": "Once the Contractor issues the notification, the quotation is accepted and the change to the Prices, Completion Date, and Key Dates is final.",
      "source_url": "https://www.gatherinsights.com/en/nec4/response-periods",
      "relevance": "high"
    },
    {
      "claim": "The standard NEC4 position for a Contractor to submit a quotation is three weeks from the instruction, unless an extension is granted.",
      "verbatim_quote": "NEC guidance notes the standard ECC position is three weeks from instruction unless extended.",
      "source_url": "https://www.necplanningsolutions.co.uk/post/nec4-compensation-event-time-bar-and-the-ce-clock-clauses-61-and-62-explained",
      "relevance": "high"
    },
    {
      "claim": "NEC4 allows contractors to recover the costs of preparing compensation event quotations under all contract options, reducing previous financial risks.",
      "verbatim_quote": "This exclusion has been deleted and the cost of preparing compensation events is now recoverable under all Options.",
      "source_url": "https://www.alambassociates.com/nec3-vs-nec4-whats-changed/",
      "relevance": "medium"
    },
    {
      "claim": "Failure by the Project Manager to respond to a programme within the contractual period plus a one-week notice period results in deemed acceptance.",
      "verbatim_quote": "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.",
      "source_url": "https://www.alambassociates.com/nec3-vs-nec4-whats-changed/",
      "relevance": "medium"
    }
  ],
  "market_context": "- [HIGH] Under NEC4, the Project Manager (PM) has two weeks to respond to a Contractor's compensation event quotation, after which the Contractor can trigger a deemed acceptance process. (source: https://www.gatherinsights.com/en/nec4/response-periods)\n- [HIGH] Deemed acceptance of a quotation is not automatic; the Contractor must actively issue a notification of the PM's failure to reply. (source: https://www.gatherinsights.com/en/nec4/response-periods)\n- [HIGH] Once a quotation is deemed accepted via the notification process, the changes to Prices and dates are final. (source: https://www.gatherinsights.com/en/nec4/response-periods)\n- [HIGH] The standard NEC4 position for a Contractor to submit a quotation is three weeks from the instruction, unless an extension is granted. (source: https://www.necplanningsolutions.co.uk/post/nec4-compensation-event-time-bar-and-the-ce-clock-clauses-61-and-62-explained)\n- [MEDIUM] NEC4 allows contractors to recover the costs of preparing compensation event quotations under all contract options, reducing previous financial risks. (source: https://www.alambassociates.com/nec3-vs-nec4-whats-changed/)\n- [MEDIUM] Failure by the Project Manager to respond to a programme within the contractual period plus a one-week notice period results in deemed acceptance. (source: https://www.alambassociates.com/nec3-vs-nec4-whats-changed/)"
}