Final Economic Viability Report September 2009 - pdf

Density and Dwelling Mix
3.22 The density of development affects the overall number of units provided on a given land area and
hence is a key factor determining the sales value to be derived from a particular plot of land. The
overall number of affordable units provided, whatever the quota, is also determined by the overall
number of units to be built, and hence is also affected by the density of development.
3.23 The density of development varies systematically with site location and DTZ have, therefore, identified
the development densities that should be applied to sites in each of the ten market areas. The figures
used are based on typical densities of recent developments in each type of location, with high,
medium and low density figures identified so as to enable testing of the degree to which changes in
density affect viability. The density assumptions were tested with the Local Authority and
Stakeholders.
3.24 The density assumptions, expressed as dwellings per hectare (dph), are as follows:
Selby high density 60 dph
medium density 50 dph
low density
40 dph
Sherburn in Elmet high density 55 dph
medium density 45 dph
low density
35 dph
Tadcaster high density 55 dph
medium density 45 dph
low density
35 dph
Northern high density 40 dph
medium density 35 dph
low density
30 dph
North East high density 40 dph
medium density 35 dph
low density
30 dph
East high density 40 dph
medium density 35 dph
low density
30 dph
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