Can you reclaim higher rate SDLT if a property had damp, mould or neglect when you bought it?

Introduction

Many buyers ask whether they can recover Stamp Duty Land Tax (SDLT), especially the 3% higher rates, where a property was in poor condition when they bought it. A common belief is that damp, mould, disrepair or general neglect may mean the property was not suitable for use as a dwelling, which can affect the SDLT treatment.

This issue matters because SDLT on residential property can be significant, and claims are sometimes promoted on the basis that a property was allegedly uninhabitable at completion. But the legal test is strict, and recent case law has made clear that the threshold is now relatively high.

The Question

The general question is this: if a buyer purchased a property in England or Northern Ireland within the last four years, paid the 3% higher rate of SDLT, and the property had problems such as damp, mould or neglect at the time of purchase, is there a basis to reclaim SDLT?

Nick’s Explanation

Nick’s explanation can be summarised in this way: poor condition on its own does not automatically mean a property stops being a dwelling for SDLT purposes. The key question is whether, at the effective date of the transaction, the property was truly unsuitable for use as a dwelling.

In anonymised terms, his point is that buyers should not assume that visible defects, repair needs, or even serious disrepair will necessarily justify a reclaim. The legal test focuses on the actual condition of the property at completion and whether it could realistically be used as a home at that point.

That means a buyer needs to look beyond labels such as “run down”, “neglected” or “needs renovation”. The real issue is whether the defects were so serious that the building could not properly function as a dwelling at all.

The Law

SDLT is charged under the Finance Act 2003. Whether property is residential or non-residential matters because different SDLT rules and rates apply.

The concept of a “dwelling” is central. Broadly, a building counts 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. If a property is not suitable for use as a dwelling at the effective date of the transaction, that may affect whether it is treated as residential property for SDLT purposes.

The higher rates for additional dwellings are imposed under Schedule 4ZA to the Finance Act 2003. Those rates apply where the transaction involves a major interest in a single dwelling and the statutory conditions are met.

If a property was not suitable for use as a dwelling at completion, one argument sometimes raised is that the transaction should not have been treated as the acquisition of a dwelling at all, so the higher rates should not have applied. However, this depends entirely on the facts and the legal test is demanding.

In uninhabitable or “not suitable for use” cases, the current threshold is relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. That decision reinforces that substantial disrepair does not automatically prevent a property from being a dwelling for SDLT purposes.

Analysis

The correct analysis usually involves the following steps.

First, identify the effective date of the transaction, which is usually completion. The property’s condition must be assessed at that date, not by reference to later works or later deterioration.

Second, consider whether the building was still suitable for use as a dwelling on that date. This is a practical, fact-sensitive test. Relevant features may include whether the property had functioning basic facilities such as water, electricity, sanitation, kitchen facilities, and safe access, and whether any defects made occupation genuinely impossible rather than merely unattractive or inconvenient.

Third, separate serious disrepair from true unsuitability. Damp, mould, outdated interiors, a poor state of repair, missing fittings, cosmetic neglect, and the need for refurbishment may all reduce value and make a property undesirable, but they do not necessarily mean it is not a dwelling.

Fourth, consider the effect of the recent authorities. The courts have taken a stricter approach to claims based on alleged uninhabitability. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold is now relatively high. A buyer generally needs more than evidence of disrepair or health hazards. The condition must be such that the property was not suitable for residential use in any real sense at completion.

Fifth, if the property was still a dwelling, the 3% higher rates were capable of applying in the normal way, assuming the other Schedule 4ZA conditions were met. In that situation, a reclaim based only on damp, mould or neglect is unlikely to succeed.

Sixth, any reclaim must also be made within the applicable time limits and supported by proper evidence. Buyers should expect HMRC to examine the facts closely, including survey reports, photographs, completion statements, utility status, and any contemporaneous records.

Outcome

The practical conclusion is that a buyer cannot assume they are entitled to an SDLT reclaim merely because the property had damp, mould, neglect or repair issues when purchased.

A reclaim may only be arguable where the condition at completion was so severe that the property was not suitable for use as a dwelling. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, that is a relatively high threshold. Many properties in poor condition will still be treated as dwellings for SDLT purposes, with the result that the residential rates, including the 3% surcharge where applicable, remain due.

Practical Steps

If you want to assess your position, the sensible next steps are:

• Check the completion date to see whether you are still within the time limit for amending or claiming a repayment.
• Review the SDLT return filed for the purchase and confirm exactly which rates were applied.
• Gather contemporaneous evidence of the property’s condition at completion, including surveys, valuation reports, photographs, mortgage documents, and correspondence from the time.
• Focus on whether the property was genuinely unsuitable for use as a dwelling, not simply in poor condition or in need of renovation.
• Compare the facts carefully against the current legal authorities, especially the stricter approach confirmed by the Court of Appeal.
• If the evidence only shows disrepair, damp, mould, or neglect, be cautious about assuming a reclaim is available.

Conclusion

Buying a run-down property does not by itself create an SDLT reclaim. The legal question is whether the property was suitable for use as a dwelling at completion. Because the courts now apply a relatively high threshold in uninhabitable cases, especially after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, only genuinely extreme cases are likely to justify a reclaim on this ground.

Legal References Used

• Finance Act 2003
• 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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