West Sussex Trading Standards have urged caution about doorstep traders using council tax rebates to make money.
The County Times was contacted by a concerned reader who was door-knocked by a company offering to look into whether his property was on the right council tax band.
They said any excess he had paid over the past 22 years could be refunded - but it would cost him 50 per cent of the rebate.
Trading Standards officer John Bridger said: “PPI companies have asked for 25 per cent. Providing it’s in their terms and conditions it’s legal, but do you want to pay that kind of money.”
A Horsham District Council spokesman said checking the banding of your property is an easy and free service.
“Although there are companies that will pursue appeals for householders, the process can be handled quite simply by householders themselves.
“The council does not set the council tax band of a property; this is done by a government agency, the Valuation Office.”
Full details on how to appeal if someone thinks their house is wrongly banded are available on the Valuation Office website www.voa.gov.uk.
People can also call 03000 501501, email email@example.com or write to Council Tax South, Valuation Office Agency, Second Floor, 1 Francis Grove, Wimbledon, London, SW19 4DT.