Commercial Control · The Radar™ - Stage 01 (early warning) · Worked example Crestfield Distribution Centre - Phase 2 M&E · NEC4 ECC Option A · CE-009 threaded · Period 7 · £3.81m
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COMMERCIAL CONTROL KIT™ STAGE 01 · THE RADAR

The Radar

Change Capture & Contractual Classification
Detecting change as it happens. Classifying it against the contract before the notice clock starts ticking. Every compensation event logged, classified and tracked from the moment it's recognised.
Project
Crestfield Distribution Centre — Phase 2 M&E Infrastructure
Contract
NEC4 ECC Option A · £3,814,200
Period
Month 7 of 12 · May 2026
Employer
Crestfield Logistics Ltd
Contractor
Kelbrook Construction Ltd
M&E Sub
Built AI Ltd (NEC4 ECS)
built-ai.io · hello@built-ai.io Pack 04 / 09 · Commercial Control Kit™ · © 2026 Built AI Ltd BUILT AI
CCK WORKFLOW
1The Radar
2The Clock 3The Case 4The File 5The Count 6The Drop
WHAT THE RADAR DOES

Catch the Change Before the Clock Starts

Under NEC4 ECC, a compensation event must be notified within 8 weeks of the Contractor becoming aware of it (clause 61.3). Miss the window and the entitlement is lost — time-barred, regardless of the merits. The Radar's job is to detect change events in real-time, classify them against the correct NEC4 clause, and hand them to The Clock (Stage 02) before the notice window opens.

This project — Crestfield Distribution Centre Phase 2 — is 7 months into a 12-month NEC4 ECC Option A contract. Built AI is the M&E subcontractor running power distribution, BMS, fire detection, lighting, ventilation and EV charging infrastructure across a 180,000 sq ft logistics facility. 14 compensation events have been logged to date.

NEC4 CLASSIFICATION

Classifying Against the Contract

Every change event is classified against the NEC4 ECC compensation event clauses (60.1). The classification determines the notice route, the time-bar risk, and the entitlement basis. These are the three most active clause categories on this project:

60.1(1)
PM gives an instruction changing Scope
The most common trigger. The PM issues an instruction that changes the works information — additional scope, design change, revised specification. The contractor didn't cause it; the employer instructed it.
7 CEs on this project
60.1(5)
Employer does not provide something by the date shown
Late information, late access, late decisions. The accepted programme shows when things are needed; if the employer is late, it's a CE. On this project: HV substation access was 3 weeks late.
4 CEs on this project
60.1(12)
Physical conditions — an experienced contractor would not have foreseen
Ground conditions, concealed services, structural clashes discovered during installation. On this project: an unmapped gas main found during trench excavation for cable routes.
2 CEs on this project

The remaining CE is classified under 60.1(3) (PM instruction to stop or not start work) — CE-005, where work in Zone C was stopped for six working days pending archaeological assessment after a find in the cable trench zone.

LIVE CHANGE EVENT LOG

14 Compensation Events — Month 7

Every event detected by The Radar. Classified, logged, time-stamped. The log feeds The Clock (Stage 02) for notice tracking, The Case (Stage 03) for entitlement narrative, and The Count (Stage 05) for valuation.

CEDescriptionClauseDetectedEst. ValueStatus
CE-001Additional fire-rated cable penetration seals — design change60.1(1)18 Nov 25£8,200Agreed
CE-002Revised BMS point schedule — 34 additional points60.1(1)3 Dec 25£14,600Agreed
CE-003Late access to HV substation — 3-week delay60.1(5)12 Dec 25£41,800Agreed
CE-004Unmapped gas main in cable trench zone60.1(12)8 Jan 26£22,400Agreed
CE-005PM stop instruction — archaeological find in trench zone60.1(3)14 Jan 26£16,800Agreed
CE-006EV charging specification upgrade — 22kW to 50kW DC60.1(1)2 Feb 26£38,200Agreed
CE-007Late issue of revised ventilation design — 2-week delay60.1(5)18 Feb 26£18,400Agreed
CE-008Additional external lighting columns — car park extension60.1(1)6 Mar 26£25,800Agreed
CE-009HV switchgear design change — additional civil works & programme impact60.1(1)24 Mar 26£43,039Submitted
CE-010Concealed asbestos in riser duct — diversion required60.1(12)8 Apr 26£12,400Submitted
CE-011Late power-on date from DNO — 4-week delay60.1(5)14 Apr 26£18,200Submitted
CE-012PM instruction — additional emergency lighting to mezzanine60.1(1)22 Apr 26£7,800Submitted
CE-013Fire alarm panel relocation — structural clash at designed position60.1(1)6 May 26£12,200In Preparation
CE-014Late landlord BMS integration spec — affects commissioning sequence60.1(5)12 May 26£20,600In Preparation
8
AGREED
4
SUBMITTED
2
IN PREPARATION
£300k
TOTAL PIPELINE
DEEP DIVE — CE-009

HV Switchgear Design Change

This is the CE currently moving through the Commercial Control Kit workflow. It demonstrates the full lifecycle from detection (The Radar) through to submission (The Drop). Each subsequent stage document picks up this CE and shows how it progresses.

CE-009

HV Switchgear Design Change — Additional Civil Works & Programme Impact

NEC4 ECC Clause 60.1(1) · PM instruction changing Scope
£43,039
ESTIMATED VALUE
WHAT CHANGED
PM instruction PMI-047 (issued 24 Mar 2026) changed the HV switchgear specification from 11kV to 33kV following a revised DNO connection agreement. The original Scope specified 11kV ring-main unit (Schneider RM6); the revised instruction requires a 33kV panel (Schneider MCSET). This is not a like-for-like substitution — it requires a larger switchgear enclosure (additional 2.4m × 1.8m civil base), revised cable terminations (XLPE to dry-type), and a re-sequenced commissioning programme (33kV testing requires DNO witness, 4-week booking lead).
WHEN DETECTED
24 March 2026 — same day as PMI-047 receipt. Built AI commercial team flagged the instruction within 2 hours of receipt. Logged in The Radar at 14:22 on 24 Mar.
CLASSIFICATION
Clause 60.1(1) — the Project Manager gives an instruction which changes the Scope. Clear-cut: the instruction explicitly changes a specified item in the Works Information. No ambiguity. No mixed classification.
NOTICE STATUS
Early warning issued 25 Mar 2026 (clause 15.1). Compensation event notification issued 26 Mar 2026 (clause 61.3). PM responded — not disputed. Quotation requested by PM on 28 Mar 2026. Notice window: compliant — notified within 2 days of awareness.
COST IMPACT
Estimated Defined Cost: £38,600 (switchgear differential £18,400, civil base extension £8,200, cable termination rework £2,800, commissioning re-sequence £4,400, prelims extension 1.5 weeks £4,800); with Fee at 11.5% (£4,439) the submitted quotation is £43,039. Quotation submitted 8 April (within 3-week quotation period per clause 62.3).
PROGRAMME IMPACT
1.5 weeks added to planned Completion — DNO 33kV witness testing requires 4-week booking from order; the 11kV programme allowed 2 weeks. Net impact after re-sequencing other activities: 1.5 weeks. Assessed programme submitted with quotation.
CURRENT STATUS
Submitted — awaiting PM assessment. Quotation submitted 8 Apr 2026. PM has 2 weeks to respond (clause 62.3 → response due by 22 Apr). If PM does not respond, quotation is treated as accepted (clause 62.6). As at 12 May 2026: PM has requested additional information on the DNO witness testing lead time. Response provided 14 May. Assessment expected week of 19 May.
STAGE 01 GATE — THE RADAR

Change Detected. Clock Set.

Before a compensation event moves to The Clock (Stage 02), The Radar confirms: the event is real, the classification is correct, and the initial evidence anchor is captured. This gate exists because a misclassified CE costs time downstream — and a missed CE costs money forever.

Change event detected and logged within 24 hours
NEC4 clause classification confirmed (60.1 sub-clause identified)
Source instruction/event documented (PMI, RFI, site record, photo)
Initial cost/programme impact estimated (order of magnitude)
Early warning assessment made (clause 15.1 — issue if risk to cost/time/quality)
CE handed to The Clock for notice tracking and deadline management

Handover note to Stage 02 — The Clock™: CE-009 is the priority item. Quotation submitted 8 Apr, PM response due 22 Apr, additional info requested 12 May. Track the deemed-acceptance trigger (clause 62.6) if PM does not respond within the extended period. CE-013 and CE-014 both need notification within the 8-week window — CE-013 by 1 Jul, CE-014 by 7 Jul.

THE RADAR — SNAPSHOT

14 events detected. Zero missed.

Every change event on this project has been caught by The Radar within 24 hours of recognition. Every one has been classified against the correct NEC4 clause. Every one has been handed to The Clock with its notice window intact. The pipeline stands at £300,439 — £186,200 already agreed.
CEs LOGGED
14
PIPELINE
£300k
AGREED
£186k
TIME-BARRED
0
built-ai.io · Commercial Control Kit™ · The Radar™ · Stage 01 Pack 04 / 09 · Commercial Control Kit™ · © 2026 Built AI Ltd
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