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Are you liable for Community Infrastructure Levy?

The Community Infrastructure Levy (CIL) is a charge placed on new development, such as residential development including extensions and conversions, according to their Gross Internal Area (GIA). The funding generated through the levy will contribute to the delivery infrastructure support growth in West Oxfordshire District.  

You will need to pay CIL if your development will: 

  • Create one or more new dwellings or annexes, regardless of their size.   
  • Create over 100 square metres (sqm) GIA of residential development, including conversions, replacements and ‘permitted development’.  
  • Provide large format retail space with a GIA of 280sqm or more.  
  • Making a minor material amendment (s73 application) to a previous permission which creates additional GIA.    

Exceptions to CIL are: 

  • Minor development, that is buildings or extensions where the gross internal area of new build is less than 100 metres squared, other than where the development will comprise one or more new dwellings (including annexes) in which case the new dwellings will constitute ‘Chargeable Development’, irrespective of their size 
  • Development of buildings into which people do not normally go, or into which they go only intermittently for the purpose of inspecting or maintaining fixed plant or machinery. 
  • The development type is set at a  £0 per sqm rate in our Charging Schedule 
  • The development is exempt under Part 6 of the CIL Regulations (as amended) 

You will need to make sure you submit the right forms, even if you are exempt from paying CIL. 

If you are exempt from paying CIL you will need to submit an exemption form before starting development work. 

CIL was adopted on 01 October 2025 and applies to all developments meeting the criteria from 31 January 2026.

Contact the Infrastructure Delivery Team 

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