Calculating CIL

CIL is calculated per square metre of additional floorspace using the gross internal area of the proposed development. It applies to those types of development identified in the CIL Charging Schedule.

In calculating CIL consideration will be given to any existing floorspace on site. Where existing floorspace is being re-used or demolished it may be deducted from the CIL liability provided it has been in continued lawful use for at least 6 months in the last three years.

We will calculate the amount of CIL payable (the chargeable amount) on a chargeable development in accordance with the formulae set out at Regulation 40 of the Community Infrastructure Levy Regulations 2010 (as amended).

Find out more about calculating the gross internal area of development Calculating the Gross Internal Area

Find out more about determining whether the greenfield or brownfield rate applies to your development CIL Greenfield and Brownfield Guidance