Plot Subdivision Layout Calculator

Work out plot subdivision layout instantly with clear inputs, formula shown and shareable results.

About Plot Subdivision Layout Calculator

A plotted layout must surrender land for roads and open space before any plots can be sold. Roads typically absorb twelve to eighteen percent and open space ten percent by regulation. Dividing what remains by the target plot size gives the yield, which is the number that drives the whole feasibility.

Formulas

Net saleable area

Net = total area x (1 - road share - open space share)

Plot yield

Plots = floor(net saleable area / plot size)

Worked example

With the default values below, Plot Subdivision Layout Calculator returns Plots achievable of 37. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total land areaminimum 0.1 m²: 10,000 m²
Land for roadsaccepts 0–40 %: 15 %
Land for open spaceaccepts 0–40 %: 10 %
Individual plot sizeminimum 1 m²: 200 m²

Results

Plots achievable: 37
Net saleable area: 7,500.0 m²
Road area: 1,500.0 m²
Open space area: 1,000.0 m²

Step by step

1Values used
2Net saleable area
3Plot yield
4Plots achievable= 37
5Net saleable area= 7,500.0 m²
6Road area= 1,500.0 m²
7Open space area= 1,000.0 m²

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Preliminary estimate only. Layout standards for road width, open space and plot dimensions are set by local development control regulations.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Preliminary estimate only. Layout standards for road width, open space and plot dimensions are set by local development control regulations.

Frequently Asked Questions

How is the Plot Subdivision Layout figure worked out?

Net = total area x (1 - road share - open space share). A plotted layout must surrender land for roads and open space before any plots can be sold.

Why does the actual yield come out lower?

Geometry. Corner plots, irregular boundaries and turning heads waste area that a percentage calculation cannot see, so a real layout typically yields five to ten percent fewer plots.

What values do I need to enter?

This calculator takes 4 inputs: Total land area, Land for roads, Land for open space, Individual plot size. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.