Can you reclaim the 3% SDLT surcharge because 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 for additional dwellings and the property they bought was in very poor condition. This question usually comes up where the dwelling had serious issues such as damp, mould, neglect or disrepair at the date of purchase.

The key legal issue is whether the property was still a “dwelling” for SDLT purposes when it was bought. If it was not suitable for use as a dwelling at that time, different SDLT treatment may apply. However, the legal threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. Poor condition alone will not usually be enough.

The Question

A buyer wants to know whether they may be able to reclaim SDLT where:

• the purchase took place within the last four years,
• the property was in England or Northern Ireland,
• the property had serious condition issues when bought, such as damp, mould or neglect, and
• the buyer paid the 3% higher rates of SDLT.

The practical question is whether the property’s condition at completion was so poor that it was not suitable for use as a dwelling, which could affect the SDLT position.

Nick’s Explanation

Nick’s explanation can be summarised like this: a possible reclaim depends on much more than showing that the property was run down. The central test is whether, at the effective date of the transaction, the building was suitable for use as a dwelling. If it remained suitable for residential use, even in poor or dated condition, the normal residential SDLT rules usually still apply, including the 3% surcharge where relevant.

In anonymised form, his point was that buyers should first ask whether the property had genuine condition hazards at purchase, but they should not assume that damp, mould or neglect automatically make a dwelling “unsuitable for use”. The legal test is stricter than that.

That approach is consistent with current case law. In particular, after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the condition threshold for arguing that a property was not suitable for use as a dwelling is now relatively high.

The Law

SDLT is charged under the Finance Act 2003. Different rates apply depending on whether the property is residential, non-residential or mixed, and whether higher rates for additional dwellings apply.

The main provisions usually considered in this type of case are:

• Finance Act 2003, section 55, which deals with the amount of tax chargeable,
• Finance Act 2003, section 116, which defines “residential property”, including land that consists of or includes a dwelling, and
• Schedule 4ZA to the Finance Act 2003, which contains the higher rates for additional dwellings.

For SDLT purposes, a building is generally treated as residential property if it is used or suitable for use as a dwelling, or is in the process of being constructed or adapted for such use.

The phrase “suitable for use as a dwelling” has been considered in a number of cases. The courts have made clear that the test is applied to the property’s physical condition at the effective date of the transaction. The question is not whether the buyer intended to renovate it, nor whether it was unattractive, inconvenient or in need of substantial works. The question is whether it was actually unsuitable for use as a dwelling at that date.

The recent Court of Appeal decision in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799 is especially important. It confirms that the threshold is relatively high. Serious disrepair does not necessarily prevent a building from being a dwelling for SDLT purposes.

Analysis

The issue can be analysed in stages.

First, identify what SDLT treatment was applied on the purchase. If the buyer paid the 3% higher rates, that normally means HMRC treated the property as a dwelling and treated the buyer as acquiring an additional dwelling.

Second, look at the property’s actual condition on the completion date. Evidence may include:

• survey reports,
• valuation reports,
• photographs and videos,
• builder or contractor reports,
• mortgage valuation comments, and
• completion statements and transaction documents.

Third, ask whether the defects were so severe that the property was not suitable for use as a dwelling at all. This is a factual and legal question. Relevant problems might include lack of basic facilities, major structural failure, severe contamination, or conditions making normal occupation impossible. By contrast, many common defects do not cross the line. Damp, mould, outdated kitchens or bathrooms, broken fittings, cosmetic neglect, and even significant repair needs may still leave a property suitable for use as a dwelling.

Fourth, apply the current legal threshold carefully. Following Mudan, the courts are unlikely to accept that a property ceased to be a dwelling merely because it was in bad condition or required extensive renovation. The building usually has to be in a much more serious state before it falls outside the residential definition.

Fifth, consider the reclaim time limit. In general, an SDLT amendment claim must be made within the statutory time limits. Whether a claim is still possible depends on the filing position and the relevant procedural route, so the purchase date matters. A buyer who completed within the last four years may still wish to review the position promptly, but timing should be checked against the specific procedural rules.

Finally, even if the property was not suitable for use as a dwelling, the buyer must still consider what the correct SDLT treatment should have been instead. In some cases, the property may fall to be treated as non-residential or mixed. In others, the original filing may still be correct for separate reasons. A reclaim is therefore not automatic.

Outcome

A buyer should not assume that they can reclaim the 3% SDLT surcharge simply because the property had damp, mould, neglect or needed major refurbishment. The legal test is whether the property was suitable for use as a dwelling at the date of purchase, and that threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

In practice, only the more serious cases are likely to succeed. If the building still functioned as a dwelling, even a poor one, the residential SDLT rules and the 3% surcharge will often remain in place.

Practical Steps

• Check the completion date and the SDLT return that was filed.
• Gather contemporaneous evidence of the property’s condition at purchase, especially surveys, photos and contractor reports.
• Focus on whether the dwelling was genuinely unsuitable for residential use, not just whether it was unpleasant or expensive to repair.
• Compare the facts against the stricter approach confirmed in Mudan.
• Review whether any amendment or repayment claim is still in time.
• Consider the full SDLT analysis, including whether the property would properly have been non-residential or mixed if it was not a dwelling.

Conclusion

A possible SDLT reclaim in a poor-condition property case depends on a demanding legal test. The question is not simply whether the property was run down, but whether it was unsuitable for use as a dwelling at the time of purchase. Since Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, that threshold is relatively high, so many disrepair-based claims will fail unless the facts are particularly strong.

Legal References Used

• Finance Act 2003, section 55
• 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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