CIL guidance for planning applicants | Sevenoaks District Council

CIL guidance for planning applicants

The charge will apply to the development of new homes and change of use to a dwelling. It also applies to residential extensions and outbuildings, supermarkets, convenience stores and retail warehousing where the proposed floor space is 100 square metres or more. It's chargeable on net additional floor space as long as existing floor space meets certain criteria.  

The rate is set out as pounds (£) per square metre and varies according to the location and type of development.

View the Definition of CIL Chargeable Area

The responsibility to pay CIL is the owners(s) of the land at the time the development takes place.

Forms required

All applicants for development that involves CIL liable development must submit a completed version of the CIL Additional Information Requirements Form on the Planning Portal website. The information provided in this form will enable us to determine whether CIL is payable and to calculate the amount correctly.

Download the CIL Additional Information Form (Planning Portal website)

Details of the requirements for CIL are available on the Planning Portal website

How much and when will I have to pay?

The charging rates for CIL liable development are set out in our CIL Charging Schedule.  

View the CIL Charging Schedule

The amount payable will depend on the relevant rate(s) and the number of square metres of new gross internal floor space proposed. The charge will be calculated when planning permission is given and detailed on a Liability Notice.

To calculate the CIL payment multiply the chargeable area of the development by the 2024 charging rate below.

Development type – Use class

CIL base rate (2014)

Adopted CIL charging rates

2024 - Revised charging rates after indexation applied (in accordance with the CIL regulations applied annually)

Applicable to planning applications granted from 1 January 2024

Residential Area A



Residential Area B



Supermarkets and superstores



Retail warehousing



RICS CIL index used



Worked example

Proposed new dwelling in Sevenoaks (Area A) creating 200m2 of floor space: 200m2 x £199.25= CIL Total £39,850

In calculating individual charges for the levy, Schedule 1 requires us to apply an index of inflation to each relevant CIL rate to keep the levy responsive to market conditions. From 1 January 2020, the index is the Royal Institution of Chartered Surveyors (RICS) Community Infrastructure Levy Index and is based on the BCIS All-in Tender Price Index (BCIS TPI). This annual index figure will be published on or around 1 November each year and will apply from 1 January of the following year for the whole calendar year. Before 2020, the index figure is the figure for 1 November for the preceding calendar year in the national All-in Tender Price Index published by RICS. Please refer to your CIL liability notice for further information on the calculation and rates applied. Contact us if you need any further assistance in your calculation of the Levy.

The charge must be paid within 60 days of commencement, as long as the developer has notified us of intended commencement. We will issue a Demand Notice at this stage. The charge is a mandatory and, unlike S106, is not a negotiated process. 

Payment is due immediately if we are not notified of commencement. We have enforcement powers and penalties may apply if information is not supplied or payment is not made within the set time period.

Some types of development may be able to claim relief or exemption from CIL.

Exemptions or relief

Some buildings are exempt from CIL or can claim 100% relief. If you think you qualify for an exemption or relief from the CIL, contact us as soon as possible.  

Please note that:

  • Exemption or relief cannot be granted after development has started
  • Exemption or relief can only be claimed if the claimant is an owner of a material interest in the relevant land
  • If an exemption or relief is granted it will be subject to a disqualifying event not occurring

Information on the types of relief available, forms and how to complete them can be found on the Planning Portal website

If need assistance, please contact us.

Keep us updated

If an exemption or relief has been granted and a disqualifying event occurs, the claimant must notify us as the charging authority in writing within 14 days.

If personal circumstances change you must notify the charging authority and the levy may be payable in full.

Failure to notify the charging authority may result in enforcement action against the applicant and surcharges may become payable.