Glossary
Aggregate valuation
The 1991 approach of valuing many homes at once from limited data — the reason so many bands are wrong.
In 1991 the government had to band every home in England in about 12 months. Valuers used drive-by inspections and estate-agent 'second-gear' estimates, valuing streets and estates in aggregate rather than home by home. Anomalies from that process — a whole terrace put a band too high, one house missed off a downgrade — persist to today because no revaluation has ever been done.
Related terms
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