Can you reclaim SDLT if a house was uninhabitable when you bought it?

Introduction

Many buyers search for this issue after paying Stamp Duty Land Tax (SDLT) on a property that needed major renovation. A common question is whether a house that had no working services, no usable bathroom or kitchen, or serious disrepair should have been treated as “residential property” at all on the date of purchase.

This matters because if a building was genuinely not suitable for use as a dwelling at completion, the SDLT treatment may be different. In some cases, that can reduce the tax due. But the legal test is strict, and it has become even harder to satisfy following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer and their partner purchased a house for £385,000. They already owned several other residential properties, so the transaction was charged at the higher residential rates. The SDLT paid was £18,300.

After purchase, the buyers said the house had been vacant for a long period and needed major works. They said the electricity and water were off, the heating system was not working, the radiators were unusable, and the property needed full rewiring and re-piping. They also said there was no functioning kitchen or bathroom.

The issue was whether the house was so defective at the effective date of the transaction that it was not suitable for use as a dwelling, and whether that could support an SDLT reclaim.

Nick’s Explanation

Nick’s initial approach was to identify what type of SDLT had actually been paid. He asked whether the £18,300 figure meant the higher residential rates had been applied, rather than the standard residential rates on a high-value purchase.

Once the purchase price and tax paid were confirmed, his view was that the reclaim was only worth pursuing if the buyers had in fact paid the higher residential rates. In anonymised form, his reasoning was:

If the higher residential rates were paid, it may be economically sensible to pursue a reclaim. But the key issue is whether the property can properly be shown to have been uninhabitable at the time of purchase.

He also distinguished that from a different argument sometimes made in SDLT cases: reclassifying a property as non-residential. In this scenario, his point was that if only the ordinary residential rates had been paid, trying to argue for non-residential treatment would not necessarily improve the position and could even be disadvantageous depending on the figures.

The core of the advice therefore turned on two questions:

• Was the property genuinely not suitable for use as a dwelling on completion?
• If so, would that change the SDLT outcome in a way that creates a real refund?

The Law

SDLT is charged under the Finance Act 2003. The classification of land as residential or non-residential is important because different rates apply.

The key statutory provision is section 116 Finance Act 2003. Broadly, property is “residential property” if it consists of or includes a building that is used or suitable for use as a dwelling, or is in the process of being constructed or adapted for such use.

In practice, many disputes focus on the phrase “suitable for use as a dwelling”. The question is usually tested as at the effective date of the transaction, which is commonly completion.

Higher rates for additional dwellings are imposed by Schedule 4ZA Finance Act 2003. If a buyer already owns other dwellings and is not replacing their only or main residence, the surcharge can apply to a residential purchase.

If a property is not residential property for SDLT purposes, Schedule 4ZA does not apply in the same way, because the higher rates regime is tied to acquisitions of major interests in dwellings.

Case law has made clear that the test is not whether the property was attractive, modern, comfortable, mortgageable, or ready for immediate occupation without work. The question is whether it was objectively suitable for use as a dwelling.

The threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. That decision reinforces that significant disrepair, missing facilities, or the need for major renovation will not automatically prevent a building from being suitable for use as a dwelling. The courts look closely at the actual condition on completion and whether the defects truly crossed the line from poor condition into genuine unsuitability for residential use.

Analysis

Step 1 is to identify what SDLT treatment was originally applied.

On a purchase price of £385,000, SDLT of £18,300 strongly indicates that the higher residential rates for additional dwellings were used. That is consistent with the buyers already owning several other residential properties.

Step 2 is to ask whether the building was still “suitable for use as a dwelling” at completion.

The facts relied on were serious:

• electricity disconnected
• water disconnected
• no working central heating
• radiators out of use
• full rewiring required
• full re-piping required
• no functioning kitchen
• no functioning bathroom

Those points may help, but they do not automatically win the argument. HMRC and the courts will usually want evidence showing the actual physical condition at completion, not just the buyer’s later description. They will also examine whether the problems were temporary, whether services could readily be restored, and whether the house still retained the basic character of a dwelling.

Step 3 is to consider the impact of the more recent case law.

After Mudan, the bar is high. A property can be in very poor condition and still count as residential for SDLT. Missing or defective heating, disconnected utilities, outdated fittings, or the need for substantial refurbishment may not be enough on their own. The strongest cases tend to involve conditions showing that the building could not realistically be occupied as a dwelling at all at the effective date.

Step 4 is to consider the financial effect if the argument succeeds.

If the transaction stops being treated as the purchase of a dwelling, the higher residential rates would not apply in the same way. In the figures discussed, the possible refund identified was £9,550. That reflects the difference between the SDLT actually paid and the amount thought to be due if the dwelling argument failed and a different classification applied.

Step 5 is to recognise the risk.

The economic case for pursuing a reclaim may be sensible where a substantial surcharge was paid. But legal strength is a separate issue. The fact that a claim is financially worthwhile does not mean it is likely to succeed. On these facts, there is an arguable case, but not a certain one, especially under the stricter approach now seen in the authorities.

Outcome

A buyer in this situation may have an arguable SDLT reclaim if they paid the higher residential rates and can prove that the property was not suitable for use as a dwelling at completion.

However, the condition threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. A house that is vacant, run down, disconnected from services, or in need of major renovation is not automatically “uninhabitable” for SDLT purposes.

So the practical answer is this: there may be a reclaim opportunity, but success depends heavily on the evidence and on whether the defects truly made the property unsuitable for use as a dwelling on the completion date.

Practical Steps

If you are assessing a similar SDLT position, gather evidence from the date of purchase, not just after works began. Useful evidence may include:

• the completion statement and SDLT return
• the purchase price and exact SDLT paid
• the sales particulars
• survey reports
• mortgage valuation reports
• photographs and videos showing the condition at completion
• invoices, contractor reports, and quotations prepared immediately after purchase
• evidence that utilities were disconnected and why
• evidence about the state of the kitchen, bathroom, plumbing, wiring, and heating system
• any local authority or environmental health material if relevant

You should then work through these questions:

1. Did you pay standard residential rates or the higher rates for additional dwellings?
2. Was the building still objectively suitable for use as a dwelling on completion?
3. What is the alternative SDLT calculation if the property was not residential?
4. Is the possible refund large enough to justify the claim?
5. Do you have contemporaneous evidence strong enough to withstand HMRC scrutiny?

Where the argument depends on habitability, it is especially important to assess the claim against the current case law rather than older, more generous assumptions about what counts as “uninhabitable”.

Conclusion

Paying higher SDLT on a renovation purchase does not by itself mean you are entitled to a refund. The real question is whether the property was unsuitable for use as a dwelling at completion. That is a demanding test, and it is now harder to satisfy after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. If the facts are strong and the evidence is good, a reclaim may still be possible.

Legal References Used

• Finance Act 2003, section 116
• Finance Act 2003, Schedule 4ZA
• Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799

This page was last updated on 22 March 2026.

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