18,400 existing houses could be used for permanent residents in Cornwall. That would be the case if Cornwall had the same share of houses without permanent residents as the English average.
In the 2001 census 29,000 of the 259,000 households spaces did not have a usual resident, either being second homes, holiday homes or vacant. Thats 11.2% of the total. The figure for England was 4.3%.
If we use the latest – 2016 housing total of 266,331 and apply the 11.2% and 4.3% figures we get:
29,700 and 11,300 respectively, that gives a difference of 18,400 houses.
Why build more when there are plenty of ’empty’ houses in Cornwall?