Can you reclaim SDLT if a property had damp, mould or serious disrepair when you bought it?

Introduction

Many buyers ask whether they can reclaim Stamp Duty Land Tax (SDLT) after buying a property that was in very poor condition. A common belief is that damp, mould, neglect or general disrepair may mean the property was not suitable for use as a dwelling, which can affect the SDLT treatment.

This issue usually arises where the buyer paid the higher residential rates, including the 3% surcharge, and later wonders whether the property should instead have been treated as non-residential or mixed-use because of its condition at the date of purchase.

The key point is that the legal test is strict. 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.

The Question

A buyer purchased a property in England or Northern Ireland within the last four years. At the time of purchase, the property had condition problems such as damp, mould or neglect. The buyer also paid the higher rate SDLT surcharge and wants to know whether there may be grounds to reclaim SDLT on the basis that the property was not suitable for use as a dwelling when acquired.

Nick’s Explanation

Nick’s response, in substance, was that the first step is to review whether a reclaim is realistically possible under the law, rather than assuming that visible defects automatically create an SDLT refund.

His explanation can be summarised like this:

• the property’s condition at the effective date of the transaction is what matters;
• the question is not whether the property needed work, but whether it was truly unsuitable for use as a dwelling at that time;
• many properties with damp, mould, wear, neglect or the need for renovation still count as dwellings for SDLT purposes;
• where a reclaim is possible, it usually depends on strong factual evidence about the condition on completion.

That is consistent with current SDLT case law. A buyer does not obtain a refund simply because the property was unattractive, outdated, or expensive to repair.

The Law

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

For these cases, the central issue is whether the property was “residential property” at the effective date of the transaction. Broadly, a building is 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 building is not suitable for use as a dwelling at the relevant date, it may fall outside the residential property rules. That can affect both the applicable SDLT rates and whether the 3% higher rates for additional dwellings applied.

The legal test focuses on suitability for use as a dwelling at completion, not on:

• whether the buyer intended to renovate it;
• whether mortgage lenders were cautious;
• whether the property was unpleasant or in poor decorative condition;
• whether repairs were needed before comfortable occupation.

The courts have repeatedly treated this as an objective test. The question is whether the building, viewed realistically, had ceased to be suitable for use as a dwelling.

The Court of Appeal in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799 has now reinforced that the threshold is relatively high in uninhabitable or unsuitable-for-use cases. Ordinary disrepair, even serious disrepair, does not necessarily take a property outside the residential SDLT regime.

Analysis

When assessing whether an SDLT reclaim may be available, the analysis usually works in the following stages.

First, identify the exact state of the property on the effective date of the transaction, usually the completion date. Later works, later surveys, and later deterioration may have little value unless they clearly show the original condition.

Second, distinguish between disrepair and true unsuitability for use as a dwelling. Many buyers acquire properties with:

• damp or mould;
• old kitchens or bathrooms;
• defective plaster;
• heating issues;
• water ingress;
• general neglect;
• the need for substantial refurbishment.

Those factors may show that the property needed work, but they do not automatically show it was not suitable for use as a dwelling.

Third, look for conditions that go beyond poor condition and point to genuine lack of suitability as a dwelling. Examples may include the absence of essentials for occupation, major structural failure, severe safety issues, or such extensive damage that the building could not realistically function as a home at all. Even then, the test remains demanding.

Fourth, consider the evidence. A reclaim normally depends on contemporaneous material such as:

• survey reports prepared around the purchase date;
• photographs and videos from completion;
• contract papers and auction particulars;
• builder or engineer reports;
• local authority notices, if any;
• evidence showing missing facilities or dangerous conditions at the time.

Fifth, ask whether the higher rates were only charged because the property was treated as residential. If the property was in law still suitable for use as a dwelling, the higher rates may have been correctly charged and there may be no reclaim.

Finally, check time limits. SDLT amendment and repayment routes are time sensitive. A buyer who purchased within the last four years may still be within a relevant period to challenge the treatment, but the correct route depends on the facts and procedural history.

In practical terms, a claim based only on damp, mould or neglect is often weak unless those issues formed part of a much wider picture showing that the property had genuinely ceased to be suitable for residential use. After Mudan, the courts are unlikely to accept a low threshold.

Outcome

A buyer may be able to reclaim SDLT only if the property was truly not suitable for use as a dwelling at the date of purchase and the evidence supports that conclusion.

If the property merely had damp, mould, wear, neglect, or required renovation, that will often be insufficient. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold for saying a property was uninhabitable or not suitable for use is relatively high.

So the practical answer is: possibly, but only in a narrower range of cases than many buyers assume.

Practical Steps

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

1. confirm the completion date to check whether any SDLT time limit may still be open;
2. collect all evidence showing the property’s condition at completion;
3. separate cosmetic or repair issues from conditions that may show genuine unsuitability for use as a dwelling;
4. review the SDLT return to see how the property was classified and why the higher rates were applied;
5. compare the facts carefully against the current case law, especially the stricter approach confirmed by Mudan;
6. obtain specialist tax advice before submitting a reclaim, because weak claims can fail and may create further correspondence with HMRC.

Conclusion

You cannot assume that a property with damp, mould or serious neglect qualifies for an SDLT reclaim. The legal test is whether it was suitable for use as a dwelling at the purchase date, and that test is now applied strictly. A reclaim is most likely to succeed only where the property’s condition was so severe that it had genuinely ceased to function as a dwelling.

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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