Why does the calculator show a wider cost range for villas than for houses?

Villas carry more variables, outdoor works, plot slope, water source mix and larger structural spans, each of which can swing the total meaningfully, so an honest estimate widens the range rather than pretending a single number applies to every villa scenario. A compact house has fewer of these variable-heavy inputs, which is why its range is tighter. Use the calculator's example scenarios to see which specific inputs are driving your own range wider or narrower.