Contaminated Land Assessment
Last updated October 29, 2026.
Local validation checklist code B2
When you'll need to provide this
You may need to include this if you're submitting your planning application to either Swale or Maidstone borough councils.
For applications submitted to either Swale or Maidstone borough councils
These requirements apply to applications sumittted to either Swale or Maidstone borough councils.
- when previous uses on or adjoining the site could have given rise to contamination such as landfill sites, former industrial and commercial processes, petrol filling stations, institutional uses, storage of chemicals (including on farms)
- when an initial desktop and walkover study suggests that contaminants may be present
Typical proposals
The contaminated land assessment planning application requirement is typically needed when you're proposing to do any of the following:
New house; New housing development; Commercial development; Industrial or warehouse developmentWhat you'll need to provide
What you'll need to include in your application
For applications submitted to either Swale or Maidstone borough councils
When previous uses on or adjoining the site could have given rise to contamination such as landfill sites, former industrial and commercial processes, petrol filling stations, institutional uses, storage of chemicals (including on farms). Or When an initial desktop and walkover study suggests that contaminants may be present.
Why we need you to provide this
Why we need you to include this in your application.
For applications submitted to either Swale or Maidstone borough councils
Applications may also need to be accompanied by a land contamination assessment, which should include an extended assessment of contamination in line with Section 17 policy P3 of the National Planning Policy Framework (2026) National_Planning_Policy_Framework.pdfand at: http://planningguidance.planningportal.gov.uk
Sufficient information should be submitted to determine the existence or otherwise of contamination, its nature and risks posed and if these can be reduced to an acceptable level. Where contamination is known or suspected or the proposed end users would be particularly vulnerable, information should be submitted to determine whether the proposed development can proceed. Where remediation measures are proposed they should take account of the presence of any trees.