How to Pay Less VAT on Home Renovations in the UK

Most people assume that building work on a home in the UK is charged at 20% VAT. And most of the time, they are right. But there are specific circumstances where that drops to 5% and in one case, it drops to zero. Because one of those circumstances involves a very particular type of property and if you know about it before you buy, it could save you a serious amount of money

Before I go any further: I am an Architect, not an accountant or tax adviser. Nothing in this video is financial advice. These VAT reliefs are real and they are set out in HMRC guidance, but always take advice from a qualified tax professional before relying on any of this for your own project. There are three scenarios I want to cover. Let’s start with the two that apply to work on a property you already own.

Converting a Non-Domestic Building into a Home

The first scenario applies if you are converting a commercial or industrial building into a home. Maybe you own a shop, an office, a barn, a former pub and you want to convert it into a flat or a house. When you carry out that kind of conversion, the construction work can be charged at 5% VAT rather than 20%.

I have done this type of project myself. A few years ago I converted this traditional Victorian shop in Edinburgh into a luxury flat. To build this in 2026 it would cost £270,000 + VAT. The difference between 5% and 20% VAT on a sum like that is around £40,000.

Conversions are complex projects. You need planning permission for change of use, and building regulations approval, which is a separate application. Get advice early, before you commit to anything like this. 

Adaptations for People with Disabilities

The second scenario is the most generous of the three, because it is zero rated. No VAT at all. Building work carried out to adapt a home for someone who is chronically sick or disabled can be zero rated. But the work has to be specifically designed to meet the needs of that individual.

HMRC gives clear examples: widening doorways for a wheelchair, installing ramps, adapting a bathroom or installing a lift. The relief only covers the qualifying elements of the work, not an entire project. If you are doing a broader renovation at the same time, only the adaptation work is zero rated. Everything else is still charged at 20%.

Your contractor needs a written declaration from the eligible person before they can apply the zero rate. HMRC provides a template for this and it needs to be in place before work starts. I have done one project using this system for a client with a chronic, debilitating medical condition. It took careful planning between the client, contractor and a tax specialist. Detailed accounts had to be kept and it added to the paperwork both the contractor and I had to deal with throughout the project. This increased my fees and the contractors costs but it was worth it for the client. 

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If You Are Thinking About Buying a Home.

Those first two scenarios apply to work on a property you already own or are converting. But the third one is different. This one is specifically relevant if you are in the market to buy a home. And if the right kind of property comes up, what I am about to tell you could change how you approach the whole purchase. I want to set the scene first.

An empty property is a risky purchase. Nobody has been heating it, nobody has been ventilating it. Condensation builds up behind surfaces where you cannot see it. Damp gets into the walls. Timbers start to rot.

I have walked into empty properties in Edinburgh where the damage from neglect has cost the buyer far more than they expected to put right. The risks are real. But if you know what you are looking at, an empty home is also a very specific kind of financial opportunity.

The UK tax system has a relief built into it that reduces the VAT on renovation work from 20% to 5%. But it only applies if the property has been unoccupied for at least two years before work starts on site. The logic is simple: the government wants empty homes brought back into use, and this is one of the incentives to make that happen.

The two-year period has to be the period immediately before work begins on site. Not two years at some point in the past, with occupation in between. If you buy a house that has been empty for twelve months and you move straight in, the clock resets. You have occupied it. The two-year period is broken. But here is where it gets interesting. Think about what happens if you do not move in.

The time it takes to get a proper design done, go through planning, get building regulations approval, find a contractor and negotiate a price, can easily take a year. Especially if you are planning a significant renovation or extension to the property.

If you hold off on occupying the property during that process, you could push the total unoccupied period past the two-year mark before work starts on site. If you are still renting or have somewhere else to stay, it might be worth continuing to do so. On a major renovation, the VAT saving could easily cover several months of rent.

Consider the numbers. A renovation costing £200,000 attracts £40,000 of VAT at 20%. At 5%, that drops to £10,000. That is a £30,000 saving.

How do you prove the property has been empty for two years? Council tax records are the most reliable source. A long-term empty property will show a gap in payments or a formal exemption applied by the local authority.

It's also worth noting that the VAT reduction doesn’t apply evenly to everything in the project. I have seen cases where 5% vat only applied to permanent fixtures in the building, but 20% Vat still applied to anything that could be removed. 

So floor tiles and kitchen units were 5% but carpets and kitchen appliances were 20%. This is a complex area of tax law and it requires expert advice. As I said that outset, I am just an architect, not an accountant. 

You should also keep in mind that the government can change these rules with no notice. I have seen this happen. Back in 2012 I was renovating a listed building in Edinburgh. At that time, there was a reduced rate of VAT on renovations to listed buildings but in the Autumn Statement that year, with no notice, the chancellor George Osborne scrapped that scheme. 

My client was furious, not only were they part way thought construction and committed to the project. But his business had donated large sums of money to the Tory party. The rate of vat changed at midnight and there was nothing he could do. 

Summary

To recap the three scenarios. If you are converting a non-domestic building into a home, the construction work is 5% VAT. If you are adapting a home for someone who is chronically sick or disabled, the qualifying work is zero rated. And if you are renovating a home that has been genuinely unoccupied for at least two years, the work is 5% rather than 20%.

None of this is automatic. You need the right evidence, the right declarations and the right conversation with your contractor before work starts. This is a link to the relevant HMRC guidance. Have a read, and then speak to an accountant.

Book a Consultation

If you are thinking about buying or altering a home anywhere in the UK, I offer online consultations to homeowners right across the UK. I can help you think through the costs, design, planning and building regulations for your project.