Heritage Impact Assessment Framework

How to use the Heritage Impact Assessment Framework

1. Enter the property details — listing grade, conservation area status, and character.
2. Describe the proposed works and their impact on the building's significance.
3. Work through the structured framework covering setting, fabric, and special interest.
4. Generate an AI-assisted draft for professional fact-checking and adaptation.

Why use this tool

• Prompts for significance, effects, alternatives and mitigation.
• Structures your assessment around the NPPF concept of 'significance', which is what planning officers look for.
• Keeps a repeatable draft structure while leaving conclusions to site-specific professional judgement.

Applications affecting heritage assets need proportionate, evidence-backed analysis of significance and the effect of the proposal. This framework prompts for that evidence, but AI can invent facts, policy wording or conclusions and has not inspected the asset. Verify the current national and local policy, listing description, historic evidence, drawings and site conditions; use conservation-accredited advice where the asset or effect is sensitive.

Part of Builder Tools Utilities — construction tools for UK tradespeople.