Quick Answer
The 5% reduced rate of VAT applies to three specific types of residential construction work in the UK: converting a non-residential building into a home, renovating a property that has been empty for at least two years, and changing the number of dwellings in a building. If your builder charges you 20% VAT on this kind of work, you’re being overcharged.
A Quiet Anniversary Most Builders Have Forgotten
This May marks 25 years since Gordon Brown, then Chancellor, introduced the 5% reduced rate of VAT on certain construction services. A silver anniversary. Twenty-five years on the statute book. And yet, week after week, we see invoices land on our desks from builders charging the full 20% on work that should have been billed at 5%.
Picture this: a homeowner in Sheffield buys a tired old property that has been sat empty for three years. They hire a builder to bring it back to life. The builder, working off habit rather than the rulebook, slaps 20% VAT on every invoice. By the end of the job, that homeowner has paid thousands of pounds in tax they never owed.
It happens all the time. And it’s been happening for 25 years.
Here’s what you’ll get from this blog: a plain English breakdown of when the 5% VAT rate applies, why it matters whether you’re the builder or the customer, and exactly what to do if you’ve been overcharged.
Let’s dive in.
What Is the 5% VAT Rate for Construction Work?
The 5% rate is a reduced rate of VAT that applies to specific residential building services instead of the standard 20% rate. It also applies to the materials the builder supplies as part of that work. The rules sit in VATA 1994 Schedule 7A Groups 6 and 7, and HMRC explains them in VAT Notice 708.
There are three situations where the 5% rate kicks in. Get to know these three, because they cover most of the jobs where trades businesses go wrong.
Situation 1: Converting a Non-Residential Building Into a Home
A barn becomes a house. An old shop becomes a flat. An office block is broken up into apartments. Any time a building that wasn’t residential before becomes residential after the work, the 5% rate applies.
The same goes for conversions into buildings used for “relevant residential purposes”. Think student accommodation, care homes, and hostels.
Situation 2: Renovating a Property Empty for Two Years or More
If a residential property has not been lived in for at least two years before the building work starts, the 5% rate applies to the renovation. Two years. That’s the magic number.
Note that the clock starts ticking on the date the property became empty, not the date the builder picks up the keys. Evidence matters here. Council tax records, electoral roll checks, and utility records all help prove the property was genuinely empty.
Situation 3: Changing the Number of Dwellings
This one catches a lot of people out. If a project changes how many homes a building contains, the 5% rate applies.
Consider this: a detached house gets converted into two semi-detached homes. That’s one dwelling becoming two. The work qualifies. Or run it the other way. Two flats knocked through into a single family home. Two dwellings becoming one. That qualifies too.
The change in the number of dwellings is what unlocks the reduced rate.
Why Does It Matter If Builders Charge the Right VAT Rate?
In my eyes, this is one of the most overlooked issues in the trades. Charging the wrong VAT rate is not a small admin error. It has real financial consequences for three different people in the chain.
Here’s the thing. There are three reasons this matters:
- If a VAT-registered business pays an invoice that has incorrectly charged 20%, they can only claim input tax based on the correct 5% rate. The extra 15% is lost.
- HMRC will only repay VAT under the DIY refund scheme if VAT has been charged correctly in the first place. Overcharged VAT doesn’t get refunded through that route.
- A regular homeowner with no way to reclaim input tax or use the DIY scheme simply pays more tax than they should. Pure dead money.
Three different people. Three different ways the wrong VAT rate hurts the customer. And one builder, just trying to do their job, accidentally costing their client thousands.
Would you want to be the builder explaining that to a customer six months down the line?
What Should You Do If You’ve Been Overcharged 5% VAT?
If you’re a homeowner or business owner who has paid 20% when you should have paid 5%, you need to go back to the builder and ask for a 15% refund on the affected work. The builder is the one who has to put it right.
The good news is the builder can reclaim that overcharged VAT from HMRC. They have two options:
- Adjust the next VAT return to bring the figures back into line.
- If the amount overcharged is more than £10,000, submit an error correction notice directly to HMRC.
Either route works. The point is, the customer should not be left out of pocket because of a VAT rate error.
Does the 5% Rate Apply to Subcontractors and Professional Fees?
Yes for subcontractors, no for most professional fees. Let me explain.
The 5% rate applies right down the chain. A subcontractor working for the main contractor on a qualifying job charges 5% VAT, just like the main contractor charges 5% to the property owner. The whole chain benefits from the reduced rate, which keeps the maths consistent and the paperwork clean.
Note though that the construction industry reverse charge will apply to most subcontractor invoices these days. That’s a separate set of rules that changes who accounts for the VAT, not the rate that applies. Get one wrong and your VAT return is a mess.
Professional services are different. Architects, surveyors, structural engineers, and consultants charge the standard 20% rate on their fees. Always.
But here’s the twist. If a customer agrees a “design and build” contract with a single supplier, where the professional services are bundled into the building work under one contract, those professional services follow the same rate as the building work. Bundled design and build on a qualifying conversion? The whole lot can be at 5%. Bought separately from an architect and a builder? The architect bills 20%, the builder bills 5%.
Structuring matters. Get advice before signing contracts on bigger jobs.
Let Me Explain Why This Matters in Real Numbers
Let’s imagine a builder converts a vacant residential property that has been empty for three years. The job total, before VAT, is £80,000.
Charged at the correct 5% rate, the customer pays £4,000 in VAT. Total invoice: £84,000.
Charged incorrectly at 20%, the customer pays £16,000 in VAT. Total invoice: £96,000.
That’s £12,000 of overpayment. Twelve grand. On one job. Money that could have paid for a new kitchen, a new bathroom, or a deposit on a van.
And before anyone says “well, the customer can claim it back”, they often can’t. If the customer is a private homeowner with no business and no DIY refund route, that £12,000 is gone for good. The builder gets the money initially, then pays it straight to HMRC on their next return. Nobody wins except the taxman.
Get the rate right at the quote stage and everyone benefits. The customer pays the correct amount. The builder looks like a professional who knows their trade. The accountant doesn’t have to scramble through retrospective error corrections six months later.
A Quick Word on Quoting Properly
This is where so many trades businesses fall down. The VAT rate goes on the quote, not just the final invoice. If you’re putting together a quote for a job that might qualify for the 5% rate, ask the questions upfront:
- How long has the property been empty?
- Is it residential now, or is it being converted from something else?
- Will the number of dwellings change as part of the work?
Three questions. Two minutes. A potential saving of thousands for your customer and a much sharper-looking quote from you.
Aaron’s Quote Handbook covers how to build quotes that win work and protect your margin. Worth a read if quoting is something you want to nail.
FAQ
Can I charge 5% VAT on a small refurbishment job?
Not usually. The 5% rate is for specific conversions and renovations of properties that have been empty for at least two years, or changes in the number of dwellings. A standard refurbishment of a property that’s been lived in throughout doesn’t qualify.
How do I prove a property has been empty for two years?
Council tax records are the strongest evidence. Electoral roll information, utility company records, and statements from neighbours all help build the case. Keep copies of whatever you collect, in case HMRC asks later.
What happens if I, as the builder, have charged 5% when I should have charged 20%?
You’ll need to issue a corrected invoice and collect the additional VAT from the customer. Then declare it on your next return. Getting it wrong the other way is more painful, because the customer has to be willing to pay more after the fact.
Does the 5% rate apply to new build houses?
No. New build residential properties are zero-rated for VAT, not reduced rated. Different rules apply. Zero rate is even better than 5%, but the qualifying conditions are stricter.
Can I claim back input VAT on materials if my customer is being charged 5%?
Yes. You charge 5% on the output side but you can still recover 20% input VAT on materials and subcontractor costs you’ve paid in. The difference comes back through your VAT return.
The Takeaway
Twenty-five years. A quarter of a century since the 5% rate landed in the VAT rule book, and most builders are still defaulting to 20% on jobs where they shouldn’t. That habit costs customers real money, and it costs builders the chance to look like the most clued-up trade on the street.
The rules are not as complicated as they look. Three situations. Conversions, two-year empties, and dwelling changes. Learn those, ask the right questions on the quote, and you’ll be ahead of 90% of the trades businesses operating in the UK today.
Here’s to the golden anniversary in another 25 years. Hopefully by then, the trade will have caught up.
Ready to Get Your VAT Right?
If this sounds like something your business needs help with, that’s exactly what our team does every day. Email info@togetherwecount.co.uk or send me a DM on LinkedIn at https://www.linkedin.com/in/aaron-mcleish-specialist-accountant-3a0ab529/. We’ll talk it through and work out how we can help.
Aaron McLeish, Managing Director