The Contractor Dependency Index is a risk assessment metric used in property development finance UK to quantify the reliance of a development project on a single contractor or a limited contractor pool. High dependency increases exposure to delays, cost overruns, and operational bottlenecks, which can impact project viability and financial returns. Developers and lenders use this index to inform contingency planning, allocate risk, and adjust loan structures or security. It is particularly relevant in large-scale or complex developments, where construction continuity and contractor performance are critical to meeting budget and programme targets, safeguarding investment outcomes.
This sits beneath Construction & Delivery Risk, introducing a more specific variant of the measure without changing its core interpretation. It is commonly considered alongside Procurement Timing Risk, as both are closely related measures used to assess similar aspects of performance or risk. In funding terms, Contractor Dependency Index is most commonly encountered in connection with Waterfall-Based Profit Share within the property development capital stack.
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