Commercial Control · Change Event Log (CEL) · Worked example Crestfield Distribution Centre - Phase 2 M&E · NEC4 ECC Option A · CE-009 threaded · Period 7 · £3.81m
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CEL · Change Event Log

Change Event Log

Live register of every compensation event — detected, classified, notified, valued, agreed or in progress. The single source of truth for commercial change on this project.
Project
Crestfield Distribution Centre — Phase 2 M&E Infrastructure
Reference
CRE-CEL-001 · Period 7
Prepared by
Built AI Ltd · J. Navarro (Commercial Lead)
Reporting date
Friday 22 May 2026
Issued to
Kelbrook Construction Ltd · Alder Cost Consultants (PM)
Contract
NEC4 ECC Option A · £3,814,200
built-ai.io · hello@built-ai.io Pack 04 / 09 · Commercial Control Kit™ · © 2026 Built AI Ltd BUILT AI
PERIOD 7 SUMMARY

14 Compensation Events — £300,439 Pipeline

This log captures every compensation event from contract commencement (3 November 2025) to the current reporting date (22 May 2026). It is the single register from which all downstream commercial documents — notice tracker, variation narratives, valuations and monthly submissions — are derived.

14
TOTAL CEs
8
AGREED
4
SUBMITTED
2
IN PREP
0
TIME-BARRED
CHANGE EVENT REGISTER

Complete Log — All 14 Events

CEDescriptionClauseSourceDetectedNotifiedValueProgrammeStatus
CE-001Additional fire-rated cable penetration sealsDesign change — 14 additional penetrations at compartment walls60.1(1)PMI-01218 Nov19 Nov£8,200NilAgreed
CE-002Revised BMS point schedule — 34 additional pointsEmployer design change — expanded monitoring requirements60.1(1)PMI-0183 Dec4 Dec£14,600NilAgreed
CE-003Late access to HV substationEmployer failed to provide access by date in accepted programme — 3-week delay60.1(5)Site rec.12 Dec13 Dec£41,800+3 wksAgreed
CE-004Unmapped gas main in cable trench zonePhysical condition not shown on contract drawings — diversion required60.1(12)Site rec.8 Jan9 Jan£22,400+1 wkAgreed
CE-005PM stop instruction — archaeological find in trench zoneWork stopped in Zone C for 6 working days pending archaeological assessment60.1(3)PMI-02414 Jan15 Jan£16,800+1 wkAgreed
CE-006EV charging specification upgrade — 22kW to 50kW DCEmployer instruction to upgrade 12× charging points from AC to DC fast-charge60.1(1)PMI-0312 Feb3 Feb£38,200NilAgreed
CE-007Late issue of revised ventilation designEmployer design team issued Rev C 2 weeks after programme date — near-miss on notice60.1(5)Prog.18 Feb11 Apr£18,400+2 wksAgreed
CE-008Additional external lighting columns — car park extensionPM instruction adding 8× lighting columns to extended car park area60.1(1)PMI-0366 Mar7 Mar£25,800NilAgreed
CE-009HV switchgear design change — 11kV to 33kVPM instruction per revised DNO connection agreement — civil works & programme impact60.1(1)PMI-04724 Mar26 Mar£43,039+1.5 wksSubmitted
CE-010Concealed asbestos in riser ductACMs discovered during riser modification — diversion & licensed removal60.1(12)Site rec.8 Apr9 Apr£12,400+0.5 wkSubmitted
CE-011Late power-on date from DNODNO confirmed 4-week delay to permanent power connection60.1(5)DNO ltr.14 Apr15 Apr£18,200+4 wksSubmitted
CE-012Additional emergency lighting to mezzaninePM instruction following fire officer visit — 16 additional fittings60.1(1)PMI-05222 Apr23 Apr£7,800NilSubmitted
CE-013Fire alarm panel relocationStructural clash at designed position — relocate 4m to alternate wall60.1(1)PMI-0556 May7 May£12,200NilIn prep
CE-014Late landlord BMS integration specEmployer BMS specification issued 6 weeks after programme date — affects commissioning60.1(5)Prog.12 May13 May£20,600TBCIn prep
TOTAL — 14 Compensation Events£300,439Agreed: £186,200
PERIOD 7 MOVEMENT

What Changed This Month

Movement on the change event log since Period 6 (24 April 2026). This summary shows what's new, what's progressed and what's been agreed — the delta that matters for the monthly commercial review.

MovementCEDetailValue Impact
AgreedCE-007Late ventilation design — agreed by PM 19 May at submitted value£18,400
AgreedCE-008External lighting columns — agreed by PM 10 Apr at submitted value£25,800
SubmittedCE-012Emergency lighting to mezzanine — quotation submitted 14 May£7,800
NewCE-013Fire alarm panel relocation — detected 6 May, notified 7 May£12,200
NewCE-014Late BMS integration spec — detected 12 May, notified 13 May£20,600
Net movement this period+£84,800
PIPELINE LAST PERIOD
£215,639
NET MOVEMENT
+£84,800
PIPELINE THIS PERIOD
£300,439
ANALYSIS BY CLAUSE

Where the Change Comes From

60.1(1)
PM changes Scope
7
£149,839
60.1(5)
Late provision
4
£99,000
60.1(12)
Physical conditions
2
£34,800
60.1(3)
Stop instruction
1
£16,800

The largest source of change is PM instructions changing Scope (clause 60.1(1)) — 7 events totalling £149,839. The second largest is late employer provision (clause 60.1(5)) — 4 events totalling £99,000. This pattern is typical of a project where the employer's design is still evolving mid-construction. The data feeds the monthly commercial review and the risk discussion with Kelbrook Construction.

Disclaimer: This Change Event Log is produced by Built AI Ltd for internal commercial management and reporting purposes. Values shown are Built AI's assessed Defined Cost + Fee; agreed values reflect PM assessments or agreed quotations. Submitted and in-preparation values are Built AI's quotation figures and may differ from PM assessments. This document does not constitute a contractual claim or a final account statement.

CHANGE EVENT LOG — PERIOD 7

14 events. £300k pipeline. Zero time-barred.

Every change event on this project is in this register. Every one is classified, notified, and tracked. This log feeds the notice tracker, the variation narratives, the valuations and the monthly submission. It's the single source of truth for commercial change.
TOTAL CEs
14
PIPELINE
£300k
AGREED
£186k
THIS PERIOD
+£85k
built-ai.io · Commercial Control Kit™ · CEL · Change Event Log Pack 04 / 09 · Commercial Control Kit™ · © 2026 Built AI Ltd · CRE-CEL-001 Period 7
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