England · National documents
Strategic environmental assessment and sustainability appraisal
Explains environmental assessment and sustainability appraisal when preparing plans and programmes.
AI-generated summaries of the linked official sources; not editorially reviewed. Sources and limits
Where this document applies
England: relevance depends on the proposal, site and planning process.
Strategic environmental assessment and sustainability appraisal (official source, opens in a new tab) · Reference ID 11-001-20190722
Assess the plan against reasonable alternatives
Sustainability appraisal is an iterative part of preparing a plan, considering environmental, economic and social objectives. The guidance explains its relationship with Strategic Environmental Assessment; an appraisal supports the plan’s development rather than replacing the plan-making decision.
Read the official source (official source, opens in a new tab) · Reference ID 11-001-20190722
Limits and checks
- This national source does not establish the local policies, designations or site facts that apply to an individual proposal.
- Some guidance predates the August 2026 Framework and may refer to earlier policy numbering. Read it with the current Framework and any applicable transition provisions.
Read alongside this document
Put the national source in your local context
Start with the exact refusal reason. Note the policy and paragraph it cites, then check your authority’s policy summary and the facts discussed in relevant appeal decisions. Each appeal turns on its own facts and does not predict another outcome.