guidetoproperty ‘Basement storey or Cellar’ – definition This topic contains 0 replies, has 1 voice, and was last updated by guidetoproperty 2 years, 9 months ago. Author Posts December 22, 2015 at 12:27 pm #525 guidetopropertyKeymaster ‘Basement storey or cellar’ means any storey, which is partly / wholly below the ground level. The basement height should not project more than 1.5 mtrs. above the average ground level. Author Posts The forum ‘Guide To Property’ is closed to new topics and replies.