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💷 CIL Exemption Checker
Check if your development is exempt from the Community Infrastructure Levy. Self-build, social housing, extensions, and annexes may qualify for full or partial relief.
Answer these questions:
1️⃣ What type of development?
2️⃣ How much new floorspace (GIA) are you creating?
3️⃣ Will you live in the property as your main home for at least 3 years?
About this tool: CIL Exemption Checker
Check if your development qualifies for CIL exemptions: self-build, social housing, residential annexe, minor development, or charitable relief.
When to use it
Use before submitting your application. CIL exemptions must be claimed BEFORE starting work — miss this and you lose the exemption permanently.
Policy and guidance it draws on
CIL Regulations 2010 (as amended), Reg 42-54D
Part of Financial Intelligence
Use these tools to understand the financial side of your project — what fees you'll pay, whether the scheme is viable, what CIL/S106 might cost, and whether your land value assumptions stack up. Essential for go/no-go decisions.
Related tools
Fee CalculatorViability AssessmentBuild Cost EstimatorDev AppraisalCIL & S106Affordable HousingLand ValueTotal Project CostGuidance to help you prepare — not formal planning advice. Check the current policy text and your council's local plan before relying on it.