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 reclaim Stamp Duty Land Tax (SDLT), especially where they paid the 3% higher rates for additional dwellings and the property was in very poor condition at the date of purchase. This usually arises where the dwelling had damp, mould, neglect or other defects and the buyer wants to know whether the property was so defective that it should not have been treated as a residential dwelling for SDLT purposes.

The key issue is whether the property was “suitable for use as a dwelling” on the effective date of the transaction. That test is important because SDLT treatment depends on the condition of the property at completion, not on what the buyer planned to do with it afterwards.

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 serious condition problems such as damp, mould or general disrepair. The buyer also paid the 3% higher rates of SDLT. The question is whether the buyer may be entitled to reclaim SDLT on the basis that the property was not suitable for use as a dwelling when it was bought.

Nick’s Explanation

Nick’s explanation can be summarised in this way: a reclaim may be possible in some cases, but the legal threshold is high. It is not enough that a property was run down, neglected, unpleasant, or in need of substantial refurbishment. The condition must have been so serious at completion that the building was not suitable for use as a dwelling.

In anonymised form, his point is that buyers often focus on visible defects such as damp, mould and disrepair, but the SDLT test is narrower than a general surveyor’s view that the property needed work. The real question is whether, as a matter of fact and law, the property could be used as a dwelling at the effective date.

That approach is now even more important following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, which confirms that the condition threshold in “unsuitable for use” cases is relatively high.

The Law

SDLT is charged under the Finance Act 2003. Whether property is residential or non-residential matters because the SDLT rates differ, and because the 3% higher rates apply only to purchases of additional dwellings that fall within the residential rules.

For SDLT purposes, 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. The question is assessed at the effective date of the transaction, which is usually completion.

If a property was not suitable for use as a dwelling at that date, it may fall outside the normal residential treatment. In some cases that can mean the higher residential rates were wrongly charged. Any repayment claim must also be made within the relevant statutory time limits, which is why buyers often ask about purchases made within the last four years.

Case law has developed the meaning of “suitable for use as a dwelling”. The courts have repeatedly made clear that this is an objective test. The fact that a buyer intends to renovate, strip out or redevelop the property does not itself determine the SDLT result. Nor does the mere existence of defects automatically make a dwelling unsuitable.

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 analysis usually works in four steps.

First, identify the exact condition of the property on completion. Evidence matters. Relevant points may include whether there was functioning water, electricity, sanitation, kitchen and bathroom provision, structural integrity, weather-tightness, safe access, and whether the defects were temporary, repairable or catastrophic.

Second, separate serious disrepair from true unsuitability. A property can be unattractive, neglected and expensive to repair, yet still be suitable for use as a dwelling. Many old or damaged homes remain dwellings for SDLT even if no reasonable buyer would want to move in without works.

Third, apply the objective legal test. The issue is not whether the property met modern living standards or mortgage lender preferences. It is whether it had crossed the line so that it was no longer suitable for use as a dwelling at all. The courts have treated that line as a demanding one.

Fourth, consider the SDLT consequence. If the property was still suitable for use as a dwelling, the normal residential rules apply and the 3% higher rates may also apply if the buyer owned another dwelling and the statutory conditions were met. If the property was not suitable for use as a dwelling, there may be scope to argue that the residential treatment, including the surcharge, was incorrect.

Examples help show the distinction:

• A property with damp, mould, dated fittings, missing floor coverings and a poor decorative state will often still be a dwelling for SDLT.
• A property requiring a new kitchen or bathroom may still be suitable for use if basic facilities existed at completion.
• A property with severe structural failure, no usable sanitation, major fire damage, or conditions making occupation impossible may have a stronger argument.

Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, buyers should be cautious about assuming that disrepair, even substantial disrepair, is enough. The current legal position points to a relatively high threshold before a property stops being suitable for use as a dwelling.

Outcome

The practical conclusion is that a reclaim is only likely to succeed where the property’s condition at completion was exceptionally serious. Damp, mould and neglect may support an argument, but they do not by themselves establish that the property was not suitable for use as a dwelling. In most cases, ordinary disrepair or refurbishment needs will not be enough.

If the buyer paid the 3% higher rates, a reclaim may still be worth reviewing where the facts are unusually strong and there is good contemporaneous evidence of the property’s condition at completion. But the legal threshold is now relatively demanding.

Practical Steps

A reader assessing their position should:

• Check the completion date to make sure any repayment or amendment window is still open.
• Gather contemporaneous evidence, such as survey reports, photographs, videos, contractor reports, lender correspondence and completion documents.
• Focus on the condition at the effective date of the transaction, not the condition after strip-out or later deterioration.
• Identify whether essential dwelling features were actually missing or unusable, such as sanitation, water, electricity, kitchen facilities, weather-tightness or structural safety.
• Review whether the original SDLT return treated the property as residential and applied the higher rates.
• Compare the facts carefully against the current case law, especially Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Where the evidence shows only poor condition or a need for renovation, the reclaim case is likely to be weak. Where the evidence shows a genuinely non-usable dwelling at completion, a more detailed SDLT review may be justified.

Conclusion

A property does not stop being residential for SDLT just because it was in bad condition. To challenge the 3% surcharge successfully, the buyer usually needs to show that the property was not suitable for use as a dwelling on completion, and that is now a relatively high threshold in light of Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

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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