Can you reclaim Stamp Duty Land Tax if a house was uninhabitable when you bought it?

Introduction

Many buyers ask whether they can recover some Stamp Duty Land Tax (SDLT) after buying a property that turns out to be in very poor condition. The usual argument is that the building was not suitable for use as a dwelling at the effective date of the transaction, so the purchase should not have been taxed as residential property in the normal way.

This is an area where the law has become much stricter. A property does not become “non-residential” for SDLT purposes simply because it needs repair, modernisation, or substantial works. The legal threshold for showing that a dwelling was truly unsuitable for use is now relatively high, especially following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer purchased a house and paid SDLT. After completion, concerns were raised that the property was uninhabitable. The buyer wants to know whether there is any basis to reclaim SDLT, and whether evidence such as a survey report could assist.

Nick’s Explanation

Nick’s core point was that more information is needed about the property before any view can be formed. In particular, the relevant question is not simply whether the house was in bad condition, but whether it was genuinely not suitable for use as a dwelling at the relevant date for SDLT.

In anonymised form, his request was for the kind of evidence that usually matters in these cases: details of the property, sales particulars, interior photographs, and a clear explanation of why it is said that the building was not suitable for residential use.

That reflects the correct legal approach. A survey report may help, but only if it addresses the condition of the property at the effective date of the transaction and supports the argument that the building had crossed the high legal threshold from “poor condition” into “not suitable for use as a dwelling”.

The Law

SDLT is charged under the Finance Act 2003. Different rates can apply depending on whether the land is residential, non-residential, or mixed-use.

For SDLT purposes, a building is generally treated as residential property if it is used as a dwelling or is suitable for use as a dwelling, or is in the process of being constructed or adapted for such use. The key issue in these cases is often whether the property was “suitable for use as a dwelling” at the effective date of the transaction.

Case law has established that this is an objective test. The question is not whether the buyer intended to renovate it, or whether a lender would or would not lend on it, but whether the property, viewed realistically at the relevant time, was suitable for use as a dwelling.

The courts have repeatedly shown that the threshold is demanding. Serious disrepair does not automatically make a house non-residential. Missing fittings, dated condition, damp, defective services, or the need for refurbishment may still leave the property suitable for use as a dwelling in law.

The position is now especially strict following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, which confirms that the condition thresholds in “uninhabitable” or “not suitable for use” cases are relatively high.

Analysis

To assess whether an SDLT reclaim is realistic, the issue should be approached step by step.

First, identify the effective date of the transaction. For most purchases, this is the completion date. The property’s condition must be tested as at that date, not by reference to later deterioration or works discovered afterwards.

Second, gather objective evidence of condition at that time. Useful evidence can include:

• the survey report
• photographs and videos taken before or at completion
• sales particulars and auction particulars
• builder or engineer reports
• invoices or quotations showing the nature of urgent remedial works
• evidence about utilities, sanitation, structural integrity, and safety

Third, ask what exactly made the property said to be uninhabitable. It is important to distinguish between:

• a property that is unpleasant, outdated, or expensive to repair, and
• a property that is so defective that it is not suitable for use as a dwelling at all

Examples that may be relevant include the absence of basic facilities, severe structural failure, or conditions making occupation unrealistic in any ordinary sense. Even then, each case turns on its facts.

Fourth, consider whether the evidence shows a temporary lack of comfort or a true absence of residential suitability. The courts and HMRC generally resist claims based only on disrepair, missing kitchens or bathrooms, damp, infestation, heating defects, or a need for renovation, unless the overall condition is extreme.

Fifth, test the facts against current authority. Following Mudan, a buyer should assume that only a narrow category of cases will succeed. The fact that the property required major works, or that the buyer never intended to live in it before renovation, is not enough by itself.

In practical terms, a survey report can help, but only if it clearly addresses the legal issue. A report that simply says the property is in poor condition, needs refurbishment, or is not mortgageable may not establish that it was not suitable for use as a dwelling for SDLT purposes.

Outcome

A buyer may be able to reclaim SDLT only if the facts and evidence show that, at the effective date of the purchase, the property was not suitable for use as a dwelling under the strict legal test.

That is now a difficult argument in many cases. The threshold is relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. If the property was merely run down, derelict-looking, or in need of extensive renovation, that will often not be enough.

Practical Steps

If you are considering whether an SDLT reclaim is possible, the sensible next steps are:

1. Obtain the SDLT return and confirm how the transaction was originally reported.
2. Collect all evidence showing the state of the property at completion.
3. Review the survey report carefully to see whether it addresses suitability for use as a dwelling, rather than only condition or lending issues.
4. Prepare a short factual chronology explaining the defects that existed at completion.
5. Compare those facts with current case law, especially Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.
6. Take specialist SDLT advice before submitting any amendment or reclaim.

Where a claim is weak, it is better to identify that early than to pursue a refund argument that is unlikely to succeed.

Conclusion

Buying a house in very poor condition does not automatically mean SDLT was overpaid. The legal question is whether the property was truly not suitable for use as a dwelling at the relevant date, and that is now a high bar. A survey report may assist, but only if the underlying facts are strong enough to satisfy the current legal test.

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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