Can you reclaim the 3% SDLT surcharge if a property was in poor condition when you bought it?

Introduction

Many buyers ask whether they can reclaim Stamp Duty Land Tax (SDLT), especially where they paid the 3% higher rates and the property had serious defects when they bought it. This question usually comes up where the dwelling had damp, mould, neglect or other physical problems, and the buyer wants to know whether the property should have been treated as not suitable for use as a dwelling at the effective date of the transaction.

This matters because, in some cases, a property that is genuinely not suitable for use as a dwelling may fall outside the normal residential SDLT rules. But the legal threshold is now relatively high, especially after the Court of Appeal decision in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer purchased a property in England or Northern Ireland within the last four years. At the date of purchase, the property had condition issues such as damp, mould or general disrepair. The buyer also paid the 3% higher rates of SDLT. The question is whether those defects could support a reclaim of SDLT on the basis that the property was not suitable for use as a dwelling when it was bought.

Nick’s Explanation

Nick’s core point is that poor condition alone does not automatically create an SDLT reclaim. The real issue is whether the property was, at the effective date of the transaction, so defective that it was not suitable for use as a dwelling for SDLT purposes.

In anonymised form, his explanation can be summarised like this: a buyer may want to review a past SDLT return where the property was bought recently, is in England or Northern Ireland, had significant physical defects at completion, and the 3% surcharge was paid. But any reclaim depends on the legal test being met, not simply on the presence of hazards or the cost of later works.

The practical message is that the condition of the property must be examined carefully against the statutory test and the case law. A property needing repair, modernisation or even substantial refurbishment is not necessarily outside the residential SDLT regime.

The Law

SDLT is charged under the Finance Act 2003. For most purchases of dwellings in England and Northern Ireland, the residential rates apply. In some situations, the higher rates for additional dwellings also apply, adding a 3% surcharge.

The key legal issue in this type of case is whether the subject matter acquired was a “dwelling” at the effective date of the transaction. If the property was not suitable for use as a dwelling at that date, it may not be treated as residential property in the normal way.

The question of suitability is factual and objective. HMRC and the courts look at the physical condition of the property at completion, not the buyer’s future plans for renovation and not simply whether the property was unpleasant, outdated or in poor decorative order.

Recent authority has made clear that the threshold is demanding. In Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the Court of Appeal confirmed that “not suitable for use as a dwelling” is a relatively high standard. The fact that a property has serious defects, needs extensive work, or would not sensibly be occupied immediately does not by itself mean the test is met.

Analysis

The analysis usually proceeds in five steps.

First, identify the relevant date. For SDLT, the question is assessed at the effective date of the transaction, usually completion. Evidence from later surveys or later deterioration is less important unless it shows what the condition was at that date.

Second, examine the actual physical defects. Damp, mould, neglect, water ingress, missing fittings, damaged plaster, outdated services and similar problems may all be relevant. But the legal question is whether those defects prevented the property from being used as a dwelling, not whether they made it undesirable or in need of works.

Third, distinguish between disrepair and true unsuitability. A property can still be a dwelling even if it is run down, unattractive, non-compliant with modern expectations, or in need of substantial expenditure. The courts have repeatedly resisted arguments that ordinary or even serious disrepair is enough on its own.

Fourth, consider whether there was a fundamental failure of basic residential functionality. Cases are stronger where the property lacked essential features to such an extent that it could not realistically function as a home at all. Even then, the threshold remains high after Mudan.

Fifth, consider the SDLT consequence. If the property was still suitable for use as a dwelling, the normal residential rules apply and any 3% surcharge position is assessed in the usual way. If it was genuinely not suitable for use as a dwelling, there may be scope to argue that the residential treatment was wrong and that SDLT was overpaid.

It is also important not to confuse this issue with other SDLT reliefs or refund mechanisms. A buyer cannot obtain a refund simply because the property was expensive to fix, because they later carried out major works, or because a survey described the condition in severe terms. The legal test is narrower than that.

Outcome

The practical conclusion is that a reclaim is possible only in a limited category of cases. The fact that a property had damp, mould, neglect or other hazards at purchase does not, by itself, mean SDLT was overpaid. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the condition threshold for showing that a property was not suitable for use as a dwelling is now relatively high.

So, where a buyer paid the 3% surcharge, there is no automatic reclaim just because the property was in poor condition. A reclaim depends on whether the property can properly be said to have failed the dwelling test at completion.

Practical Steps

If you are assessing a possible SDLT reclaim in this situation, the sensible next steps are:

• Check the purchase date and confirm that the claim is still within the relevant time limit.
• Obtain the completion statement, SDLT return and any SDLT calculation used on purchase.
• Gather contemporaneous evidence of the property’s condition at completion, such as surveys, lender reports, photographs, contractor reports and correspondence from the time.
• Focus on defects affecting basic habitability or residential functionality, rather than general disrepair or renovation needs.
• Compare the facts carefully with the reasoning in the case law, especially Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.
• Check whether the issue is truly one of suitability for use as a dwelling, rather than a different SDLT issue such as replacement of a main residence or another relief.

Conclusion

A property in poor condition does not automatically justify an SDLT reclaim. The legal question is whether, at completion, it was not suitable for use as a dwelling. That is now a relatively demanding test, and after Mudan many claims based only on damp, mould, neglect or refurbishment needs are unlikely to succeed without very strong evidence.

Legal References Used

• Finance Act 2003
• 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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