Density ratio, expressed as units per acre or hectare, measures the intensity of a property development site in the UK. It provides a quantitative assessment of how many residential or commercial units can be delivered on a specific land area, influencing planning approval, construction costs, and potential returns. Developers and lenders use this metric to evaluate the efficiency of a project, the achievable yield, and compatibility with local planning guidelines. Density ratio is critical in property development finance UK for forecasting cash flow, optimising plot usage, and comparing alternative schemes on a consistent operational and financial basis.
This sits beneath Unit Density/Plot Ratios, introducing a more specific variant of the measure without changing its core interpretation. It is commonly considered alongside Plot Ratio / Floor Area Ratio (FAR), as both are closely related measures used to assess similar aspects of performance or risk.
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