More infoOur new interactive property prices map shows that Redruth is the cheapest place to buy a home in Cornwall. Homes in the TR15 postcode area sold for an average of £243,857 each in the 12 months to the end of July. That’s less than any postcode area in our county with at least 20 sales over the last year. Houses sold for £246,962 each on average in the PL31 postcode area. Houses sold for an average of £682,878 in the PL28 postcode area.