Self-build levy exemption and the three-year clawback
Two forms at two separate moments, one before work starts and one within six months of completion, then a three-year occupation condition with no discretion.
The self build cil exemption removes the Community Infrastructure Levy from a new dwelling you build and then live in, and it is lost more often through paperwork than through anything else. Two forms have to be submitted at two separate moments, one before a spade goes in the ground and one within six months of completion, and a three-year occupation condition follows. Miss a step and a levy bill that can run to tens of thousands of pounds becomes payable, with no discretion for the council to forgive it.
What the exemption covers
The exemption sits in the Community Infrastructure Levy Regulations 2010 as amended. It applies to a new dwelling, or the conversion of a building into a dwelling, built by a person who will occupy it as their sole or main residence.
Three boundaries are worth fixing in your mind at the outset.
It applies to the dwelling you will live in, not to a house built to sell. An intention to sell on completion takes the project outside the exemption entirely, and the three-year condition described below is how the regulations test that intention after the event.
It is separate from the residential annexe and residential extension exemptions, which have their own conditions and their own forms. An annexe within the curtilage of your existing home is claimed under those provisions, not under the self-build route.
And it removes the levy only. It does not touch a section 106 obligation, a planning fee, a highway agreement or a water connection charge. Where a council has secured contributions by agreement rather than through the levy, those survive the exemption, which is a point worth checking before assuming the project is free of contributions.
Claiming before development begins
The sequence matters more than the content of any single form, and it has to be completed in order.
- Assume liability for the levy, using the assumption of liability form, in the name of the person who will occupy the dwelling.
- Submit the self-build exemption claim, commonly known as Form 7 Part 1, and wait for the council to grant it in writing.
- Once the exemption has been granted, submit the notice of the date development will start, which the regulations call a commencement notice.
- Start work on or after that date, not before.
The order is not negotiable and the timing is not forgiving. The exemption has to be granted before development begins, and that notice has to be submitted before development begins as well.
Failing to submit that notice has historically caused relief to be lost, and the regulations in this area have been amended more than once, so check the current position with the charging authority rather than relying on any summary. What has not changed is that there is no route to claiming the exemption retrospectively. A project that starts on site before the exemption is granted pays the levy.
Keep the dates. A photograph of the site on the stated start date, the council's written grant of exemption, and the acknowledgement of each form are the file you will need if anything is queried.
Evidence submitted after completion
The second form, Form 7 Part 2, has to reach the council within six months of completion. This is where most claims fail, because the deadline arrives while the owner is still moving in.
The evidence expected with it is specific. A completion certificate for the building work. Proof of title to the dwelling. A council tax certificate or bill showing the dwelling has been entered into the valuation list. And at least two further items from a defined list, which in practice means two of the following: an approved claim under the VAT refund scheme for DIY housebuilders, a specialist self-build warranty, or a self-build mortgage.
Two practical consequences follow from that list. If you are paying cash, have no specialist warranty and do not intend to reclaim VAT, you may struggle to produce two items, so decide early which two you will rely on. And the VAT reclaim has its own deadline under the separate scheme for building a new home, so running both processes in parallel is easier than sequencing them.
Diarise the six-month date the day the completion certificate is issued. It is the single most useful thing you can do for this claim.
The three-year occupation condition
The exemption is conditional on the dwelling being your sole or main residence for three years, measured from the date of the compliance certificate for the building work.
During that period the dwelling has to remain your main home. Living elsewhere while keeping the property empty, or moving out and returning, both raise questions, and the test is about the property being your sole or main residence rather than about where your post is delivered.
Plan around it. Three years is longer than many self-builders expect when they start, and the point at which the house is finished is often the point at which a job changes or a family situation shifts. The exemption does not bend for good reasons, so if there is any realistic prospect of needing to move within three years, work out the levy figure before you rely on the relief.
Events that trigger a clawback
Three disqualifying events bring the levy back into charge if they happen within the three-year period.
- Selling the dwelling.
- Letting the dwelling.
- The dwelling ceasing to be the claimant's sole or main residence, including a change of use.
Where a disqualifying event occurs, you must notify the charging authority in writing, and the regulations set a short window for doing so, commonly stated as 14 days. Notify anyway even where you think an exception might apply, because the failure to notify carries its own consequence on top of the levy becoming payable.
The amount that becomes payable is the levy calculated for the development, and it will have been indexed, so the bill can be larger than the figure on the original liability notice. The mechanics of indexation are the same ones that apply to other contributions, discussed in deferred contributions and indexation in section 106.
Selling or letting within the period
If a sale within three years becomes unavoidable, deal with it openly and early.
Tell the charging authority, get the demand notice, and settle the levy before completion of the sale. Unpaid levy is recoverable against the land, and it will surface as a local land charge in the buyer's searches, which at best delays the sale and at worst breaks it.
Letting has the same effect as selling and catches people who move for work and let the house rather than sell it. There is no partial relief for letting part of the property or for a short let, so treat any letting as a disqualifying event until the authority tells you otherwise in writing.
One planning point worth noting. If you sell within the three years and the buyer intends to live in the property themselves, that does not preserve your exemption. The condition attaches to the claimant, not to the dwelling.
Keeping the paperwork a lender will want
Build the file as you go, because the people who will read it are a mortgage lender at the start and a buyer's solicitor at the end.
Keep the planning permission and the approved drawings, a Planning Statement or design material if one was submitted, the liability notice, the assumption of liability, the granted exemption, the start-date notice with the date, the compliance certificate, Form 7 Part 2 with its acknowledgement, and the council tax certificate.
A buyer's solicitor after the three years will want to see that the exemption was properly granted and that the clawback period has expired without a disqualifying event. A solicitor within the three years will want an undertaking about the levy. Having the file ready turns that from a negotiation into a formality.
The wider levy regime is also in transition, with powers for a successor charge on the statute book and not fully in force, so check the current position before assuming the rules you started with still apply, as set out in the Infrastructure Levy and what is enacted.
PlanScope drafts the Planning Statement and the supporting reports a self-build application needs, from your site details and your answers, with "TO BE CONFIRMED" flags wherever a figure is missing. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. For specialist technical reports, qualified professional input may be required.
This is general guidance, not legal advice, and the levy forms and deadlines are matters on which an error is expensive. Check the position with your charging authority or a qualified professional before relying on it. Browse the 66 report types to see what a single new dwelling usually needs.
Frequently asked questions
In what order do the self-build levy forms go in?
Assume liability first, then submit the self-build exemption claim and wait for the council to grant it in writing, then submit the commencement notice giving the start date, then begin work on or after that date. The exemption has to be granted before development begins, and there is no route to claiming it retrospectively.
What evidence does Form 7 Part 2 need?
It has to reach the council within six months of completion with a completion certificate, proof of title, a council tax certificate showing the dwelling is in the valuation list, and at least two further items, in practice two of an approved VAT refund claim under the DIY housebuilders scheme, a specialist self-build warranty, or a self-build mortgage.
What triggers the clawback?
Selling the dwelling, letting it, or the dwelling ceasing to be your sole or main residence, in each case within three years of the compliance certificate. You must notify the charging authority in writing within a short window, commonly stated as 14 days, and the levy then becomes payable, indexed, so the bill can exceed the original figure.
Does the exemption remove section 106 obligations too?
No. It removes the Community Infrastructure Levy only. A section 106 obligation, planning fees, highway agreements and utility connection charges all survive it. Where a council has secured contributions by agreement rather than through the levy, check what those require before assuming the project carries no contributions.
If I sell to someone who will live there, is the exemption preserved?
No. The three-year condition attaches to the claimant, not to the dwelling, so a sale within the period is a disqualifying event regardless of what the buyer intends. Notify the authority, obtain the demand notice and settle the levy before completing the sale, because unpaid levy surfaces as a local land charge.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.