Heritage Impact Screening and Significance Assessment
Assess heritage asset significance, determine harm levels, and establish documentation requirements per NPPF policies HE5-HE7.
Heritage Asset Details
Impact Factors
Heritage Assessment Results
Paragraph 199: Heritage significance assessment
Paragraph 201: Substantial harm threshold (wholly exceptional circumstances)
Paragraph 202: Less than substantial harm (weigh against public benefit)
About this tool: Heritage Impact Screening
Heritage significance and impact screening — designated and non-designated assets, setting, and the level of assessment the LPA will expect.
Use for a fuller significance assessment when the Heritage tool flags listed buildings or a conservation area near your site.
NPPF heritage policies HE1-HE10, Planning (Listed Buildings and Conservation Areas) Act 1990
Use these tools early in your project to understand what environmental, heritage, and ecological constraints affect your site. The results will determine which technical reports you need and shape your application strategy.
Guidance to help you prepare — not formal planning advice. Check the current policy text and your council's local plan before relying on it.