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Table 1: The type of rating proposed for each energy certification trigger
   New construction and alterationsExisting buildings
TriggerDuring designAfter constructionWithin three years of occupationFor sale or rentFor public display
CalculationCompliance checks EPBD certificate EPBD certificate Optional
 Design ratingAsset rating Asset ratingAsset rating
Measurement   Design, construction and o&m verification  EPBD certificate
   Operational rating Operational rating