Hundreds of residents have challenged their council tax bands in a bid to lower their bills in Leeds.
Figures show the Valuation Office Agency (VOA) handled 890 disputes from people in the city asking for their council tax band to be changed in one year.
Almost 250 of those challenges, which were lodged to the Government agency between 2012-13, were successful and saw a reduction in the amount of tax paid.
Properties in England and Scotland are placed into council tax bands by estimating what the addresses were believed to be worth in 1991.
But there are fears that thousands of households across the country could be in the wrong category.
Statistics reveal that in Yorkshire and the Humber homeowners successfully challenged 1,920 council tax gradings in a bid to lower their council tax bills.
There were 7,450 challenges made across the county questioning the amount residents had paid.
If a challenge is successful the VOA will also review and alter the bands of other similar neighbouring properties.
A VOA spokesperson said: “The VOA is responsible for keeping council tax bands up-to-date across England and Wales, however, we cannot comment on individual cases.
“If a taxpayer has concerns about their band, they can contact the VOA at any time to explain why they think it might be wrong.
“We will also review the bands of similar neighbouring properties to ensure they are correct and we provide this service free of charge.
“Taxpayers do sometimes instruct a third party to challenge a band on their behalf, who may charge a fee for this service.”