The Schedule Performance Index (SPI) is a key metric in property development finance UK used to evaluate a project’s time efficiency. It is calculated by dividing the earned value (EV) of completed work by the planned value (PV) of scheduled work. An SPI greater than 1 indicates the project is ahead of schedule, while less than 1 signals delays. SPI is widely used by UK property developers to monitor project milestones, forecast completion times, and improve operational efficiency. Integrating SPI with cost and cash flow tracking ensures better overall project management and informed financial decision-making.
This sits beneath Time Efficiency, introducing a more specific variant of the measure without changing its core interpretation. It is commonly considered alongside Delivery Timeline Adherence Rate, as both are closely related measures used to assess similar aspects of performance or risk.
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