Work out infrastructure cost per plot instantly with clear inputs, formula shown and shareable results.
Infrastructure cost per plot spreads roads, water, sewerage, power, drainage and street lighting across the saleable plots, since only they generate revenue. Expressing it per square metre of plot allows comparison with the land rate and shows how much of the eventual sale price is servicing rather than land.
Cost per plot
Per plot = total infrastructure cost x (1 + contingency) / number of plots
Per square metre
Per m² = cost per plot / average plot area
Per plot = total infrastructure cost x (1 + contingency) / number of plots. Infrastructure cost per plot spreads roads, water, sewerage, power, drainage and street lighting across the saleable plots, since only they generate revenue.
Because most infrastructure cost scales with road frontage and length, not plot area. Larger plots spread the same servicing cost over more square metres, which is why small plot layouts carry a higher servicing burden per unit area.
This calculator takes 4 inputs: Total infrastructure cost, Number of plots, Contingency, Average plot size. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.