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 damp, mouldy, neglected or otherwise in very poor condition when purchased. This question usually arises where the buyer believes the property may not have been suitable for use as a dwelling at the effective date of the transaction.

The issue matters because SDLT on residential property is charged differently from SDLT on non-residential property, and the higher rates for additional dwellings only apply if the property counts as a dwelling. In some cases, buyers have argued that a badly damaged or unsafe property was not a dwelling at the time of purchase, so the residential rates and the 3% surcharge should not have applied.

That argument still exists, but the legal threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer wants to know whether they may be able to reclaim SDLT paid within the last four years where:

• the property is in England or Northern Ireland;
• the property was bought as an additional property, so the 3% higher rates charge was paid;
• the property had serious condition problems when bought, such as damp, mould, disrepair or neglect; and
• the buyer believes the property may not have been fit to be used as a dwelling at completion.

Nick’s Explanation

Nick’s explanation can be summarised like this: poor condition on its own is not enough. The key legal question is whether the building was “suitable for use as a dwelling” at the effective date of the transaction.

In anonymised terms, his point is that a reclaim may be worth considering where the property was genuinely in such a serious state that it could not realistically be lived in as a dwelling when bought. But ordinary repair issues, cosmetic problems, dated condition, damp, mould or neglect do not automatically take a property outside the residential SDLT rules.

The practical message is that buyers should not assume that any run-down property qualifies for a refund. The facts must show a high level of disrepair or unsuitability at completion, supported by evidence.

The Law

SDLT is charged under the Finance Act 2003. Whether property is taxed as residential or non-residential depends on the statutory definition of “residential property”.

Under section 116 of the Finance Act 2003, residential property includes:

• 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; and
• land that forms part of the garden or grounds of such a building.

If a building is not used or suitable for use as a dwelling at the effective date of the transaction, it may fall outside the residential definition. If so, non-residential or mixed-use SDLT treatment may apply instead, depending on the facts.

The 3% higher rates for additional dwellings are imposed by Schedule 4ZA to the Finance Act 2003. Those higher rates apply only where the transaction involves a major interest in a single dwelling and the other conditions in the Schedule are met.

That means the surcharge depends on the property being a dwelling. If the property was not suitable for use as a dwelling at the relevant time, the surcharge may not apply.

However, the courts have made clear that the test is not whether the property was ideal, attractive, modern, compliant with every standard, or ready for immediate comfortable occupation. The question is whether, viewed realistically, it was suitable for use as a dwelling.

The current position has been tightened by Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, which confirms that the condition threshold in “uninhabitable” or “not suitable for use” cases is relatively high.

Analysis

The analysis usually works in the following steps.

First, identify the date that matters. For SDLT, this is normally the effective date of the transaction, usually completion. The property’s condition at that date is what counts.

Second, ask whether the building was used as a dwelling or suitable for use as a dwelling on that date. This is a factual question. Relevant evidence can include:

• survey reports;
• photographs and videos taken at or before completion;
• contract papers and special conditions;
• builder or engineer reports;
• evidence that key services were missing or unsafe;
• evidence of structural instability, severe water ingress, fire damage or contamination; and
• evidence of whether occupation was realistically possible.

Third, distinguish between serious unsuitability and ordinary disrepair. A property may still be suitable for use as a dwelling even if it has:

• damp or mould;
• a poor kitchen or bathroom;
• dated décor;
• neglect;
• minor roof issues;
• heating defects;
• electrical defects that can be repaired; or
• a need for renovation before comfortable occupation.

Those issues may make the property unattractive or inconvenient, but they do not necessarily mean it was not a dwelling for SDLT purposes.

Fourth, consider whether the defects were so severe that the property could not function as a dwelling at all. Cases with a stronger argument tend to involve matters such as:

• major structural failure;
• extensive destruction by fire or flood;
• the complete absence of basic facilities combined with major disrepair;
• conditions creating real physical impossibility or danger in occupation; or
• a state of dereliction going well beyond ordinary refurbishment needs.

Fifth, apply the higher post-Mudan threshold. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the courts have confirmed that “not suitable for use as a dwelling” is a demanding test. It is no longer sensible to assume that evidence of damp, mould, neglect or substantial renovation needs will, without more, justify non-residential treatment or an SDLT reclaim.

Sixth, consider time limits. SDLT amendment and repayment claims are subject to statutory limits. A buyer who completed within the last four years may still be within a relevant period to explore whether a claim is possible, but the exact route depends on the procedural position.

Outcome

A buyer may be able to reclaim SDLT, including the 3% surcharge, only if the property was not used or suitable for use as a dwelling at completion. That is a fact-sensitive test and the bar is now relatively high.

If the property merely needed renovation, had damp or mould, was neglected, or was in poor decorative condition, that will often not be enough. A stronger case usually requires evidence of very serious disrepair or danger showing that the building could not realistically function as a dwelling at the effective date.

Practical Steps

If you are assessing whether a reclaim may be possible, the sensible steps are:

1. Check the completion date to see whether you are still within a possible claim window.
2. Gather contemporaneous evidence from the purchase date, especially surveys, photographs, videos, invoices and correspondence.
3. Focus on the property’s actual condition at completion, not on works carried out later.
4. Identify whether the problems were merely repair issues or whether they made occupation genuinely unrealistic or unsafe.
5. Review the SDLT return to confirm that residential rates and the Schedule 4ZA higher rates were applied.
6. Compare the facts carefully against the current legal test, bearing in mind the higher threshold confirmed in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Conclusion

Not every run-down property gives rise to an SDLT refund. The real question is whether the property was suitable for use as a dwelling at completion. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the condition needed to show “unsuitable for use as a dwelling” is relatively severe. A reclaim is most likely to succeed only where the evidence shows genuine uninhabitability in a strong legal sense, not just disrepair or refurbishment needs.

Legal References Used

• 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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