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 an additional dwelling and later discover the property was in very poor condition. This question usually arises where the dwelling had damp, mould, disrepair or neglect at the date of purchase.

The key issue is whether the property was truly “not suitable for use as a dwelling” at the effective date of the transaction. If it was, the purchase may fall outside the normal residential SDLT rules. But the legal threshold is now relatively high, particularly 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 entitled to an SDLT reclaim where:

• the property was bought within the last four years;
• the property is in England or Northern Ireland;
• the property had serious condition issues when purchased, such as damp, mould or general neglect; and
• the buyer paid the 3% higher rates of SDLT.

The practical question is whether the condition of the property at completion was bad enough to take it outside the normal residential SDLT rules and support a refund claim.

Nick’s Explanation

Nick’s core point is that poor condition on its own is not enough. The legal test is whether the building was actually unsuitable for use as a dwelling at the effective date of the purchase.

In anonymised terms, his explanation can be summarised like this: a buyer may have grounds to review the SDLT position if the property was bought recently, is in England or Northern Ireland, had serious condition hazards at the time of purchase, and the 3% surcharge was paid. But any reclaim depends on the facts and on whether the condition crossed the legal threshold for unsuitability.

That is an important distinction. A property can be run-down, unpleasant, in need of refurbishment, or even vacant for some time, and still remain suitable for use as a dwelling for SDLT purposes. The question is not whether works were needed, but whether the dwelling was genuinely incapable of normal residential use at completion.

The Law

SDLT is charged under the Finance Act 2003. Different rates apply depending on whether the subject matter is residential property, non-residential property, or mixed property. The 3% higher rates for additional dwellings apply through the higher rates provisions in Schedule 4ZA to the Finance Act 2003.

For SDLT, a building is generally treated 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. If a building is not suitable for use as a dwelling at the effective date of the transaction, the buyer may argue that the purchase was not an acquisition of residential property in the ordinary sense.

Disputes in this area often turn on the meaning of “suitable for use as a dwelling”. The courts have made clear that this is an objective test applied at the effective date of the transaction, normally completion. The focus is on the physical condition of the property at that date.

The recent Court of Appeal decision in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799 confirms that the threshold is relatively high. A property does not become unsuitable merely because it is dilapidated, inconvenient to occupy, or in need of repair. The condition must be serious enough that, viewed realistically, the building is not suitable for use as a dwelling at all.

Analysis

When assessing whether there may be an SDLT reclaim, it helps to work through the issue in stages.

First, timing matters. SDLT overpayment claims are subject to time limits. In many cases, a buyer considering a reclaim will need to act within four years of the effective date of the transaction.

Second, the property must be in England or Northern Ireland, because SDLT does not apply in Scotland or Wales.

Third, the condition of the dwelling at completion must be examined carefully. Relevant evidence may include:

• the survey report;
• photographs and videos taken at or near completion;
• builder or contractor reports;
• mortgage valuation comments;
• local authority or environmental health records;
• insurance issues; and
• utility and sanitation evidence, such as whether the property had functioning water, electricity, heating, kitchen and bathroom facilities.

Fourth, it is necessary to distinguish between serious disrepair and legal unsuitability. Examples that may support an argument for unsuitability include extreme structural instability, absence of basic facilities, severe contamination, or conditions making occupation unsafe in any normal sense. By contrast, damp, mould, outdated fittings, decorative neglect, broken windows, a defective boiler, or the need for major refurbishment may still fall short if the property remained capable of residential occupation.

Fifth, if the property was in fact unsuitable for use as a dwelling at completion, that may affect the SDLT treatment and, in some cases, mean the higher rates were overpaid. But this is highly fact-sensitive. A successful reclaim is not triggered simply because a buyer paid the 3% surcharge and later spent money on repairs.

Following Mudan, buyers should be cautious about assuming that poor condition automatically creates a reclaim. The courts now expect a genuinely high level of disrepair or defect before accepting that a property was not suitable for use as a dwelling. In other words, “uninhabitable” for everyday language purposes is not always enough; the SDLT test is narrower and stricter.

Outcome

A buyer may have grounds to review an SDLT reclaim where they paid the 3% higher rates and the property was in genuinely severe condition at completion. However, the legal threshold is now relatively high. Most properties that are simply neglected, damp, mouldy, or in need of renovation will not automatically qualify.

The practical conclusion is that a reclaim is only likely to succeed where the evidence shows the dwelling was objectively not suitable for use as a dwelling at the effective date of the purchase.

Practical Steps

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

1. Check the completion date to see whether a claim is still in time.
2. Obtain the SDLT return and confirm what rates were paid, including whether the 3% surcharge was charged.
3. Gather contemporaneous evidence of the property’s condition at completion.
4. Focus on objective evidence showing lack of basic habitability or serious safety issues, rather than general disrepair alone.
5. Compare the facts against the stricter approach confirmed in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.
6. Take specific SDLT advice before submitting an amendment or reclaim, because unsupported claims can be challenged by HMRC.

Conclusion

You cannot assume that paying the 3% SDLT surcharge on a run-down property means a refund is due. The question is whether the property was actually unsuitable for use as a dwelling at completion, and that test is now applied strictly. After Mudan, only genuinely serious cases are likely to succeed.

Legal References Used

• Finance Act 2003
• 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.

See all questions and answers categorized in this sitemap. Or use Google site search below.