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Housing Land Supply Calculator
Five-year housing land supply, tilted balance, and housing delivery test assessment
Housing Requirement
Annual Housing Requirement (units)
Requirement Method
Local Plan (Adopted)
Standard Method
Capped Standard Method
Direction from Secretary of State
Cumulative Shortfall/Surplus (units)
Positive for shortfall, negative for surplus (Sedgefield method)
Buffer Applied
5% (Standard)
10% (Significant under-delivery post-2024)
20% (Significant under-delivery pre-2024)
Five-Year Housing Supply
Year-by-Year Completions (units)
Year 1
Year 2
Year 3
Year 4
Year 5
Annual Windfall Allowance (Years 3-5)
Multiplied by 3 years in supply calculation
Estimated Lapsed Permissions (deduction)
Units to deduct from total supply
Housing Delivery Test (3-Year Period)
Actual Housing Completions
Year 1 Completions
Year 2 Completions
Year 3 Completions
Total Requirement (3-Year Period)
Annual requirement × 3 years
Proposed Development (Site Context)
Proposed Units
Affordable Units
Likely Delivery Timeframe
Immediate (within 1 year)
1-2 Years
2-3 Years
3-5 Years
Designated Constraints (Footnote 7)
Green Belt
AONB/National Landscape
SSSI
Functional Floodplain (Zone 3b)
Designated Heritage Asset
Habitats Site (SAC/SPA)
Calculate Assessment
Clear Form
Print Results
Five-Year Requirement Calculation
Five-Year Supply Calculation
Housing Land Supply Position
Housing Delivery Test
NPPF Tilted Balance Assessment (S3-S5(d))
Weight of Proposed Development
Planning Balance Summary
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