Tiny apartments for christchurch

Just heard this interesting interview between Chris Lynch and Duncan Webb, Christchurch Central MP, about the size of apartments available for rent in Christchurch's inner city.  

http://www.newstalkzb.co.nz/on-air/christchurch/canterbury-mornings/audio/tiny-apartments-the-way-forward-for-christchurch/

Not sure with how it compares to the District Plan, which I have copied for your information.

Chapter 14 Residential»14.6 Rules - Residential Central City Zone»14.6.2 Built form standards»14.6.2.7 Minimum residential unit size
14.6.2.7 Minimum residential unit size

1. The minimum net floor area (including toilets and bathrooms) for any residential unit (excluding parking areas, garages, or balconies allocated to each unit) shall be:
   1. Studio 35m2
   2. 1 Bedroom 45m2
   3. 2 Bedroom 70m2
   4. 3 or more Bedrooms 90m2.
   5. 
      

District Plan information see web page;
https://districtplan.ccc.govt.nz/pages/plan/Book.aspx?exhibit=districtplan&hid=87225