The argument that withstands scrutiny
Not just what changed, but why the Contractor is entitled, which clause applies, and what the consequence is - the chain that turns a change event into a defensible commercial position.
- Project
- Crestfield Distribution Centre, Warrington
- Contract
- NEC4 ECC Option A · £3,814,200
- Period
- Month 7 of 12 · May 2026
- Reference
- CREST-ES-CE009
- Prepared by
- BuiltAI Intelligence Ltd · J. Navarro
- Focus
- CE-009 · clause 60.1(1)
Illustrative example: fictional project and parties.
Cause → effect → entitlement
Most variation submissions fail at the assessor's desk because the "why entitled" is missing: the contractor describes what changed and what it costs, but not the chain that connects the change to the contractual right to recover. The Case builds that chain - three links, each independently evidenced.
The instruction, event or condition that triggered the change, source-documented: PMI, site record, drawing revision or physical discovery.
The impact on cost, time, quality or risk, quantified: additional Defined Cost, programme delay, method change, resource reallocation.
The contractual basis: clause reference, precedent, contract mechanism - the "so what" that makes the case defensible.
The difference a narrative makes
The same compensation event - CE-009 - described two ways. One gets pushed back at the assessor's desk; the other gets agreed.
"The PM changed the switchgear from 11kV to 33kV. This costs more because the equipment is bigger and more expensive. We need an additional £43,039 and 1.5 weeks. Please see the attached quotation from our supplier."
"PMI-047 (24 Mar 2026) instructs a change from an 11kV RMU to a 33kV switchgear panel, arising from the revised DNO connection agreement (DNO-CRE-2026-044). This is a compensation event under clause 60.1(1) - the PM has instructed a change to the Scope (Works Information Part 2, Section 4.3.1, specifying an 11kV ring-main unit). The Defined Cost impact is £38,600 - switchgear differential £18,400, civil base £8,200, terminations £2,800, commissioning re-sequence £4,400, prelims £4,800 - and with the Fee at 11.5% (£4,439) the submitted quotation is £43,039. The programme impact is 1.5 weeks to planned Completion, driven by the 33kV DNO witness test (4-week booking against 2). Evidence: PMI-047, the DNO agreement, Schneider quotation SC-2026-1147, the civil estimate, and the revised programme."
The weak version says it costs more. The strong version says why the Contractor is entitled to recover, which clause applies, what the Defined Cost breakdown is, and what evidence supports each element.
CE-009 - the structured entitlement narrative
- Cause - what changed.
On 24 March 2026 the PM issued PMI-047, changing the HV switchgear from an 11kV ring-main unit (Schneider RM6, per Works Information Part 2, Section 4.3.1) to a 33kV panel (Schneider MCSET). It arises from a revised DNO connection agreement (DNO-CRE-2026-044, 18 March 2026) that raised the incoming supply to 33kV. The change was not in the Scope, not caused by the Contractor, and not a Contractor risk under the contract. Evidence: PMI-047, DNO-CRE-2026-044.
- Effect - the consequence.
Not a like-for-like substitution: the 33kV panel needs a larger enclosure (an additional 2.4m × 1.8m × 300mm reinforced base with trench modifications) and dry-type stress-cone terminations in place of 11kV heat-shrink. The 33kV witness test needs a DNO-attended test with a 4-week booking lead against 2 for 11kV. Net programme impact after re-sequencing: 1.5 weeks. Evidence: Schneider SC-2026-1147, civil estimate CE009-CIV-01.
- Entitlement - why we recover.
A compensation event under clause 60.1(1): the PM has instructed a change to the Scope. The Contractor is entitled to a change to the Prices (clause 63.1), assessed as the effect on Defined Cost plus the Fee, and to a change to the Completion Date where the event delays planned Completion (clause 63.5).
- Programme impact.
Accepted Programme Rev 6 (14 March 2026) shows HV commissioning at Week 38 with a 2-week DNO lead; revised Rev 7 (submitted with the quotation) shows Week 39.5 - a 1.5-week delay driven entirely by the extended 33kV witness-testing lead. No float consumed; the delay is on the critical path. Evidence: Programme Rev 6, Rev 7.
Narratives produced - all 14
Accepted by the PM without material revision - a 100% first-time agreement rate on this project.
Submitted with the full cause → effect → entitlement chain. CE-009 is the priority item.
CE-013 (fire alarm relocation) and CE-014 (late BMS spec) - narratives in preparation.
Stage 03 gate - the argument is built, every link evidenced
- Cause documented with a source instruction or event reference.
- Effect quantified - cost and programme impact stated.
- Entitlement anchored to the NEC4 clause, with reasoning.
- Programme impact assessed against the accepted programme.
- Evidence items identified and cross-referenced.
- Narrative reviewed by J. Navarro (Commercial Lead).
Hand-off to The File™: CE-009's narrative is complete, with evidence identified - PMI-047, the DNO agreement, the Schneider quotation, the civil estimate, Programme Rev 6 and Rev 7, and photos of the existing 11kV installation. The File indexes it, verifies completeness, and confirms every claim has supporting evidence.