Analysis of the land use data provides an insight into the relationship between the residential building area and the total developed area. The figures suggest that for every hectare of residential land there are nine hectares of developed land.
How is the ratio calculated?
All the categories defined as developed are included in the calculation. These are: Community service, defence, Industry and commerce, Minerals and landfill, Residential, Transport and utilities; then Outdoor recreation, Residential gardens, Undeveloped land, and Vacant (previously developed). Figures are based on the fact that housing requires other land to support the people who live there.
To make the calculation only Lower Super Output Areas defined as urban were used. Urban in this sense included towns and areas with significant settlements.
The total developed area was then calculated in relation to the total of land used for residential buildings.
How accurate is it?
The ratio can only be an estimate based on a specific set of data. [If all of Cornwall is used in the calculation then the ratio is 16.5].
What are the implications?
The figure suggest that for every hectare of actual residential buildings built another nine hectares of land will be developed in one form or another. This could be the minimum figure.
So when looking at data on the area for housing, its not just the area covered by residential buildings but the knock on effects for total development.
Source
ONS, Land use statistics: England 2022, Published 27 October 2022.
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