For practitioners · Updated 20 September 2026 · As at 20 September 2026
SDS evidence-base checklist
Use this checklist when assembling or reviewing a Spatial Development Strategy evidence base. The first block follows NPPF policy PM1. The second block is the appraisal and cumulative-effects stack. Tick only what exists as a dated document. If a box is empty, say so in the SDS. Do not invent a figure to fill it.
Print this page. Mark each row: have / commissioned / gap.
PM1 content
| Required by PM1 | Document (title, date) | Status |
|---|---|---|
| Growth strategy covering at least 25 years | ||
| Apportionment of housing and other strategic uses to LPAs | ||
| Broad locations for growth and regeneration | ||
| Spatial expression of Local Growth Plans / Industrial Strategy | ||
| General extent of Green Belt; broad locations for possible boundary work | ||
| Broad locations for nature; strategic historic environment | ||
| Strategic infrastructure (transport, social, waste, utilities, water, flood) | ||
| Alignment with the 10 Year Infrastructure Strategy and LTPs | ||
| Maps and diagrams | ||
| Delivery mechanisms | ||
| Monitoring framework |
Act content (section 12D)
| Requirement | Document | Status |
|---|---|---|
| Reasoned justification for strategic policies | ||
| Stated period | ||
| Climate-change mitigation and adaptation | ||
| Account of relevant local nature recovery strategies | ||
| Confirmation that no particular sites are specified | ||
| SDS timetable (sections 12E–12F) |
Appraisal and cumulative effects
| Topic | Method named | Zone of influence | Alternatives compared | Status |
|---|---|---|---|---|
| Sustainability Appraisal / SEA | ||||
| HRA including in-combination | ||||
| Water resources and quality | ||||
| Nutrient / water neutrality (if advice applies) | ||||
| Transport and air quality | ||||
| Landscape and visual (GLVIA3 if used) | ||||
| Ecology (CIEEM if used) | ||||
| Cross-SDS growth corridors |
State, in one line, that there is no single UK cumulative-effects standard and which guidance you followed (PINS CEA advice, IEMA 2020, others).
Examination readiness (PM14)
- Positive: needs met or a written exception after cooperation
- Appropriate: reasonable alternatives, 10 Year Infrastructure Plan, Industrial Strategy, Local Growth Plans
- Effective: local plans can allocate to implement the strategy; monitoring where markets must change
- Consistent with national policy: no restated national DM policies
Sources
- NPPF August 2026, policy PM1 (Spatial development strategies) — MHCLG, 17 August 2026
- NPPF August 2026, policy PM14 (Examining spatial development strategies) — MHCLG, 17 August 2026
- Nationally Significant Infrastructure Projects: advice on cumulative effects assessment — Planning Inspectorate / GOV.UK, 1 January 2019. Formerly Advice Note 17. States there is no single industry standard for cumulative effects assessment.
- Conservation of Habitats and Species Regulations 2017 — legislation.gov.uk, 30 November 2017
- Planning and Infrastructure Act 2025, inserted PCPA 2004 s.12D (contents) — legislation.gov.uk, 18 December 2025