Appealing the withdrawal of a self-build CIL exemption

If a collecting authority has written to tell you that your self-build exemption has been withdrawn, you have 28 days. Regulation 116B of the Community Infrastructure Levy Regulations 2010 gives a right of appeal to the Secretary of State against a decision to withdraw an exemption, and the appeal is handled by the Planning Inspectorate. Miss the window and the levy becomes payable with surcharges attached, whatever the merits of your case. So the self build CIL exemption appeal is first a diary exercise and only second an argument.

How the exemption is claimed

The self-build exemption is not automatic and it is not granted with planning permission. It runs on three documents filed in a fixed order.

1. Assume liability for the levy, using the authority's assumption of liability form.
2. Claim the exemption on Part 1 of the self-build exemption claim form, and wait for the authority to grant it in writing.
3. Serve a commencement notice on the authority before any work starts on site.

Then, within six months of the dwelling being completed, submit Part 2 of the claim form with the supporting evidence. Completion for this purpose means the issue of a building regulations compliance certificate.

The order is the whole of it. An exemption claimed after work has started is invalid, and an exemption granted but followed by a late or missing commencement notice falls away. Councils have no discretion to forgive either. The Regulations set out the sequence and the collecting authority applies it.

Disqualifying events in the three years after completion

A granted exemption is conditional for three years from the date the dwelling is completed. The Regulations call the triggers disqualifying events, and the three that bite in practice are these.

The dwelling stops being the sole or main residence of the person who claimed. Selling within the clawback period is the obvious case, but a long let, a move abroad for work or a relationship breakdown that puts someone else in the house can all have the same effect.

The evidence in Part 2 is never supplied, or arrives after the six-month deadline. This is the most common failure by a distance, and it is the one applicants find hardest to accept, because the house really was self-built and really was occupied by the family who built it.

The dwelling turns out not to be self-build housing at all, because it was built as a commission for a third party who then bought it.

A disqualifying event makes the full chargeable amount payable. The authority calculates it on the rates and indexation that applied when the permission first became capable of implementation, not on today's figures.

Procedural failures that lose the exemption on their own

Three administrative slips account for most withdrawals, and none of them involves anyone trying to game the system.

Starting work before the authority has granted the Part 1 claim. Clearing the plot, putting in a site access or digging foundations all count as commencement for levy purposes, and the definition is wider than most self-builders expect.

Failing to serve the commencement notice, or serving it on the day work begins rather than before. Regulation 83 allows a surcharge of 20 per cent of the chargeable amount, capped at £2,500, for a missing commencement notice, and the exemption itself is lost.

Changing the permission. A section 73 application or a fresh permission creates a new chargeable development, and the exemption has to be claimed again against that new permission before the new commencement. Self-builders who vary a permission mid-build frequently overlook this.

The appeal route and what it can achieve

An appeal under regulation 116B goes to the Secretary of State and is determined on written representations. There is no hearing, no site visit and no opportunity to expand the case later, so the appeal statement has to be complete when it is lodged.

The appeal can succeed on two broad grounds. The first is that no disqualifying event occurred, which is a factual argument supported by documents. The second is that the authority's decision was procedurally wrong, for example because it never granted or never properly notified the exemption, or because it treated a date incorrectly.

What the appeal cannot do is ask for sympathy. There is no power to waive the levy because the deadline was missed by a fortnight or because the post went astray. That is the hard edge of the regime, and it is worth stating plainly before anyone spends money on an appeal that cannot win.

Reading an inspector's reasoning in a comparable case helps you judge the weight your own evidence carries, and the structure of a planning appeal decision letter is much the same in levy appeals as in planning ones.

Evidence that the dwelling was your main residence

Part 2 asks for proof on three fronts, and an appeal against withdrawal usually turns on the same material.

Keep all four strands for the full three years. A bundle assembled from memory two years after the event always has gaps, and the gaps are what the authority points at.

Surcharges that arrive alongside

The withdrawal notice rarely arrives alone. Expect the chargeable amount, interest running from the date payment became due, and a surcharge where a disqualifying event has occurred. Surcharges carry their own separate appeal route to an appointed person through the Valuation Office Agency, with its own deadline, so check which notice you are appealing and under which regulation before you write anything.

Two appeals against two different bodies on two different clocks is an unhappy position to be in. It is also common, and it is why the first thing to do on receiving any levy notice is to read the heading rather than the figure. The notice will say which regulation it is served under, and that reference tells you where the challenge goes and how long you have.

Avoiding the traps in the first place

Diarise three dates on the day permission is granted: the Part 1 grant date, the commencement date, and the date six months after the expected building control sign-off. Then diarise the end of the three-year clawback period. Four dates on one page, pinned somewhere you will see them, is the single most useful piece of levy administration a self-builder can do.

If a sale or a let inside the three years becomes unavoidable, work out the levy liability first. The chargeable amount does not shrink because the move was forced, and knowing the figure changes how you negotiate the sale.

Where you need a planning statement or supporting documents for the underlying application, a Planning Statement drafted against the adopted local plan and the current National Planning Policy Framework is the document that carries the policy case. Levy forms are separate, and no supporting report substitutes for them. The full set of report types on PlanScope covers the planning evidence rather than levy administration, which stays with you and the collecting authority.

Enter your postcode on PlanScope to see which reports a self-build plot is likely to need before you commit to a design.

This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it, and verify current regulation references and surcharge figures against the Regulations as amended. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.