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 recover Stamp Duty Land Tax (SDLT), especially the 3% higher rates charge, where a property was affected by damp, mould, neglect or other serious defects when they bought it. This question usually arises where the buyer believes the property was not suitable for use as a dwelling at the effective date of the transaction.

The issue matters because SDLT on residential property is often higher than SDLT on non-residential or mixed-use property, and the 3% surcharge can add a significant amount. However, the legal test for showing that a property was not suitable for use as a dwelling is now demanding, and recent case law has made successful claims harder.

The Question

A buyer wants to know whether they may be entitled to an SDLT reclaim. The general scenario is this:

• the property was bought within the last four years;
• the property is in England or Northern Ireland;
• at the date of purchase, the property had serious condition problems such as damp, mould, disrepair or neglect; and
• the buyer paid the 3% higher rates of SDLT.

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

Nick’s Explanation

Nick’s explanation can be summarised in this way: poor condition on its own is not enough. The real issue is whether, at the effective date of the transaction, the building was genuinely unsuitable for use as a dwelling under the SDLT rules.

In anonymised form, his point was that buyers often focus on visible defects such as damp, mould and neglect, but the legal test is stricter than that. A property may be unattractive, dated or in need of substantial refurbishment and still remain a dwelling for SDLT purposes.

The practical message is that a reclaim will usually depend on strong evidence showing that the condition crossed the legal threshold, not merely that the property needed work or was unpleasant to occupy.

That threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Law

SDLT is charged under the Finance Act 2003. Whether a property is treated as residential property is important because residential rates, including the higher rates for additional dwellings in relevant cases, can apply only if the subject matter falls within the statutory definition.

Section 116 Finance Act 2003 deals with the meaning of residential property. Broadly, property is residential if it consists of:

• 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;
• land that forms part of the garden or grounds of such a building; or
• an interest or right over land that subsists for the benefit of such a building or land.

For many SDLT reclaim arguments based on disrepair, the central question is whether the building was “suitable for use as a dwelling” on the effective date of the transaction, usually completion.

If a building is not suitable for use as a dwelling, it may fall outside the residential property definition. In some cases, that can affect the rate of SDLT charged and whether the 3% surcharge was correctly applied.

Case law has repeatedly shown that this is an objective test. The tribunal or court looks at the actual physical state of the property at the relevant date, not the buyer’s future intentions. It does not matter that the buyer planned major works, intended to strip the property back, or would not personally have lived there in that condition.

The condition thresholds are now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, which confirms that serious disrepair does not automatically mean a property is unsuitable for use as a dwelling.

Analysis

To assess whether an SDLT reclaim may be possible, the position should be analysed step by step.

First, identify the exact basis of the original SDLT return. If the buyer paid residential SDLT including the 3% higher rates, the reclaim argument will usually be that the property should not have been treated as residential property at all because it was not suitable for use as a dwelling at completion.

Second, focus on the condition of the property at the effective date of the transaction. Evidence from before or after completion can help, but the legal question is the state of the property on that date.

Third, distinguish between a property that needs work and a property that is legally unsuitable for use as a dwelling. These are not the same thing. The following points usually do not, by themselves, prove unsuitability:

• significant damp or mould;
• old kitchens or bathrooms;
• outdated wiring or heating;
• general neglect;
• the need for renovation before modern occupation standards are met; or
• the buyer’s intention to carry out major refurbishment.

Fourth, consider whether there was a more fundamental failure of the property as a dwelling. For example, a stronger case may arise where there was no functioning kitchen or bathroom at all, no usable water or drainage, severe structural instability, or other defects making occupation as a dwelling practically impossible. Even then, the threshold remains high and the evidence must be clear.

Fifth, apply the recent appellate guidance. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the courts have confirmed that the “not suitable for use” argument is not easily made out. The fact that a property is in very poor condition, unmodernised, or not attractive to a reasonable buyer does not necessarily prevent it from being a dwelling for SDLT purposes. The question is not whether it is ideal, mortgageable, or immediately comfortable, but whether it remains suitable for use as a dwelling in the statutory sense.

Sixth, check the time limit for amendment or repayment. SDLT claims and amendments are subject to strict statutory time limits, so a buyer who completed within the last four years may still need to act quickly depending on the procedural route available.

In practice, many claims based only on damp, mould and neglect will be weak unless the defects were so severe that the property had ceased to function as a dwelling. That is why evidence is critical.

Outcome

A buyer cannot assume that they are entitled to reclaim the 3% SDLT surcharge simply because the property was in poor condition when purchased. The legal test is whether the property was unsuitable for use as a dwelling at completion, and that is now a relatively hard test to satisfy.

If the property was still recognisably capable of residential occupation, even if run down and in need of extensive works, a reclaim is unlikely to succeed. If, however, the defects were so serious that the building could not realistically function as a dwelling at all, there may be scope to challenge the original SDLT treatment.

Practical Steps

A buyer assessing their position should:

• obtain the SDLT return and confirm exactly what was filed and what SDLT was paid;
• check the completion date and any claim deadlines;
• gather contemporaneous evidence of the property’s condition at completion, including surveys, photographs, contractor reports, mortgage valuation comments and correspondence;
• identify whether essential dwelling facilities were actually absent or unusable, rather than merely outdated or defective;
• compare the facts against the current case law, especially Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799; and
• take specialist SDLT advice before making or pursuing a reclaim.

Where the evidence shows only disrepair, neglect or refurbishment needs, a reclaim should be approached cautiously. Where the property had crossed the line into genuine unsuitability for use as a dwelling, the case may be stronger.

Conclusion

Not every damaged or neglected property falls outside the residential SDLT rules. The decisive issue is whether, on completion, the property was suitable for use as a dwelling. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold for proving unsuitability is relatively high, so any SDLT reclaim needs careful fact-finding and strong evidence.

Legal References Used

• Finance Act 2003
• Finance Act 2003, section 116
• 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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