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Wales Council Tax Revaluation 2005 \u2014 What Happened and Why It Matters

Updated: April 2026

The Only UK Revaluation

In 2005, Wales became the first and so far only UK nation to revalue council tax bands. The Welsh Assembly Government commissioned the Valuation Office Agency to reassess all 1.4 million domestic properties in Wales, rebasing their values from 1 April 1991 to 1 April 2003.

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What Changed

The revaluation introduced a ninth band \u2014 Band I \u2014 for properties valued over \u00A3424,000 in 2003. Many properties moved up or down by one or two bands. The overall effect was a more accurate reflection of relative property values, though the revaluation created both winners and losers.

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Winners and Losers

Properties in areas where values had risen more slowly than average tended to move down a band, while those in rapidly appreciating areas moved up. Some homeowners saw their bills increase significantly, while others received reductions. The Welsh Government introduced transitional relief to limit the impact of large band increases.

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Will There Be Another Revaluation?

The Welsh Government has periodically discussed another revaluation but has not committed to a date. The Council Tax Reform agenda has been under review, with proposals ranging from a simple revaluation to a wholesale redesign of the system. For now, bands remain based on 2003 values.

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