The National Planning Policy Framework states (attached) that planning policies and decisions should support appropriate opportunities to remediate derelict and contaminated land. It also states that where a site is affected by contamination, responsibility for securing a safe development rests with the developer and/or landowner. Planning Practice Guidance on viability (attached) recognises abnormal costs, including those associated with treatment for contaminated sites.

To unlock previously developed land for housing, the Government provides capital support to local authorities through the Brownfield Land Release Fund. The funding enables councils to undertake necessary remediation works, including decontamination.