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Disclaimer: Cost overrun figures are based on official and published sources. 2030 projections are illustrative forecasts using SCSI/AECOM Irish construction inflation rates — not confirmed costs. Data updated manually as new information becomes available.
CPD Index methodology: CPD-C (Cost) and CPD-D (Delivery) are each scored 0–100. The cost overrun % contribution to CPD-C is capped at 50 points — schemes with overruns above 100% score the maximum on this component. The combined CPD score is the unweighted average of CPD-C and CPD-D. A score of 100 indicates perfect delivery; 0 indicates complete systemic failure.
CPD — about this acronym: CPD stands for Continued Prolonged Delays — a deliberate reference to Northern Ireland's Central Procurement Directorate, rebranded as Construction, Procurement, Delivery — the NI Executive body whose mandate is to ensure public infrastructure is built on time and on budget. The name is intentional.
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