There is a discrepancy in the manual between crit 4 and the ’Communal space’ definition (for HQM ONE manual SD239 Issue 0.0). In the definition it states that the minimum Communal space required for all developments is 50m2. This is a typo, the definition should say:
Space that is accessible to the occupants of several homes and clearly associated with the development. Each individual space contributing to the total area of communal space should be over 20m2.