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Basement Impact Assessment
Structural & Hydrological Impact Analysis for Basement Developments
NHBC Compliant
Hydrology Check
Party Wall
Low Risk
Assessment Complete
Risk Score: 0/100
⚙️ Structural Risk Assessment
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💧 Hydrological Risk Assessment
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👥 Neighbour Impact Assessment
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🔨 Construction Method Suitability
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📋 Required Reports & Consents
📖 Key Policy Considerations
✓ Recommendations
About this tool: Basement Impact
Basement Impact Assessment screening — hydrogeology, ground stability, structural and flood considerations for subterranean development.
When to use it
Use for basement excavation or extension, especially in London boroughs that operate a basement development SPD.
Policy and guidance it draws on
Local Basement SPDs, NPPF ground conditions policy P2
Part of Environmental Intelligence
Use these tools when preparing technical reports and compliance documentation. Many of these are validation requirements — submit without them and your application will be returned. Use the Validation Pre-Flight tool to check which ones you actually need.
Related tools
Energy StatementSustainabilityDrainage StrategyFire SafetyWater EfficiencyWaste ManagementOverheatingOdour ImpactGuidance to help you prepare — not formal planning advice. Check the current policy text and your council's local plan before relying on it.