Can you reclaim the 3% SDLT surcharge if a property had damp, mould or neglect when you bought it?

Introduction

Many buyers ask whether they can reclaim Stamp Duty Land Tax (SDLT), especially where a property was in poor condition when purchased. A common question is whether damp, mould, disrepair or general neglect means the dwelling was not suitable for use as a dwelling, so that the higher rates of SDLT should not have applied.

This issue matters because SDLT claims are time-sensitive, and the legal test for an uninhabitable property is stricter than many people expect. In particular, where someone paid the 3% higher rates for an additional dwelling, they may want to know whether the condition of the property gives any basis for a refund.

The Question

The general question is this: if a buyer purchased a residential property in England or Northern Ireland within the last four years, paid the 3% higher rates of SDLT, and the property had serious condition problems such as damp, mould or neglect at the date of purchase, can they reclaim SDLT?

Nick’s Explanation

Nick’s explanation can be summarised in this way: a refund is not available simply because a property was in poor condition. The key legal question is whether, on the effective date of the transaction, the building was suitable for use as a dwelling.

In anonymised form, his point is that buyers often assume visible defects or the need for renovation automatically make a property non-residential for SDLT purposes. That is not the test. The test is much narrower and focuses on whether the property was genuinely unsuitable for use as a dwelling at completion.

Where a property was still capable of normal residential occupation, even if it needed substantial works, a reclaim is unlikely to succeed. Following recent case law, the threshold for showing that a property was unsuitable for use is now relatively high.

The Law

SDLT on land transactions in England and Northern Ireland is governed by the Finance Act 2003.

For SDLT purposes, whether a property is residential depends on the statutory definition of “residential property” in section 116 Finance Act 2003. Broadly, a building used or suitable for use as a dwelling can fall within that definition.

The 3% higher rates for additional dwellings are imposed by Schedule 4ZA to the Finance Act 2003, where the relevant conditions are met.

A claim for repayment of SDLT is also affected by the time limits in Schedule 10 Finance Act 2003 and the general amendment and overpayment rules, depending on the basis of the claim.

In disputes about poor condition, the central issue has often been whether the property was “suitable for use as a dwelling” at the effective date of the transaction. The courts have repeatedly held that this is a factual question, but one to be answered by applying the statutory wording rather than broad impressions about disrepair.

Importantly, in an uninhabitable or not suitable for use case, the condition thresholds are now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Analysis

The issue can be analysed in four steps.

First, identify what SDLT was paid. If the buyer paid the higher rates under Schedule 4ZA because they already owned another dwelling, that surcharge was charged on the basis that the purchased property was a dwelling.

Second, consider the condition of the property at the effective date, usually completion. The legal test is not whether the property was attractive, mortgageable, modern, or free from defects. Damp, mould, outdated services, missing fittings, water damage, infestation, or general neglect may be relevant facts, but they do not by themselves prove that the building was unsuitable for use as a dwelling.

Third, ask whether the defects were so serious that the building could not reasonably be used as a dwelling at all. This is the critical threshold. The courts have generally distinguished between:

• properties needing repair, renovation or modernisation, which may still be dwellings for SDLT purposes; and
• properties in such extreme condition that they are not suitable for residential use at the relevant date.

Fourth, consider the evidence. A successful claim usually requires strong contemporaneous evidence showing the property’s actual condition on completion. That may include survey reports, photographs, contractor evidence, completion documents, and proof that key facilities were absent or unusable. Later works or later deterioration are much less important than the condition on the effective date.

After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the bar is relatively high. A property will not fall outside the dwelling test merely because it was unpleasant, dilapidated, or in need of significant expenditure. The question is whether it remained suitable for use as a dwelling in a real and practical sense.

That means many claims based only on damp, mould or neglect will fail unless those problems were part of a much more serious level of disrepair that made occupation as a dwelling genuinely impossible or unrealistic at completion.

Outcome

A buyer cannot assume that a property with damp, mould or visible neglect qualifies for an SDLT reclaim. The fact that higher rates SDLT was paid does not itself create a right to a refund.

The practical conclusion is that a reclaim may only be realistic where the property’s condition at completion was so severe that it was not suitable for use as a dwelling under the Finance Act 2003. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, that is now a demanding test.

Practical Steps

If you are assessing whether a reclaim may be possible, take these steps:

1. Check the purchase date and confirm whether any SDLT claim is still within time.
2. Obtain the SDLT return and confirm exactly what was paid, including whether the 3% higher rates applied.
3. Gather evidence of the property’s condition at completion, not just after works started.
4. Review survey reports, photographs, completion statements, insurance records and any contractor evidence.
5. Identify whether the property lacked essential features of residential use or whether it merely needed repair.
6. Compare the facts carefully against the current case law, especially the stricter approach confirmed by the Court of Appeal.
7. Take specialist tax advice before submitting a reclaim, because weak claims can be refused and may lead to further correspondence with HMRC.

Conclusion

You may be able to reclaim SDLT in a poor-condition property case, but only in a narrow category of cases. Damp, mould and neglect are not enough on their own. The real question is whether the property was unsuitable for use as a dwelling at the date of purchase, and the courts now apply that test strictly.

Legal References Used

• Finance Act 2003
• Finance Act 2003, section 116
• Finance Act 2003, Schedule 4ZA
• Finance Act 2003, Schedule 10
• 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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