Can you reclaim SDLT because a property was not suitable for use as a dwelling?

Introduction

Many buyers ask whether they can reclaim Stamp Duty Land Tax (SDLT) if the property they bought was in very poor condition. The issue usually turns on whether the building was genuinely not suitable for use as a dwelling on the effective date of the transaction.

This is an important question because, if a property was not suitable for use as a dwelling at completion, the higher residential SDLT rates may not have applied in the usual way. However, the legal test is strict, and recent case law has made clear that the threshold is now relatively high.

The Question

A buyer wanted to know whether a purchase might qualify for an SDLT reclaim on the basis that the property was in such poor condition that it was not suitable for use as a dwelling at the time of purchase.

The general concern in cases like this is whether serious defects, disrepair, missing facilities, or safety issues are enough to take the property outside the normal residential SDLT rules.

Nick’s Explanation

Nick’s explanation can be summarised in this way: the question is not simply whether the property needed work, was dated, or was unpleasant to live in. The real issue is whether, at the effective date of the transaction, it was objectively unsuitable for use as a dwelling.

In practical terms, that means the condition must usually go well beyond ordinary disrepair, renovation needs, or a lack of modernisation. A property can still count as a dwelling even if it is run down, has defects, or requires substantial refurbishment.

Nick’s reasoning is consistent with the current legal approach: the test is fact-sensitive, but the bar is high. 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 Law

The key SDLT rules are found in the Finance Act 2003. Whether property is residential for SDLT purposes depends in part on whether it is a building that is used or suitable for use as a dwelling.

The legislation does not turn every poor-condition property into non-residential property. A building may still be residential even where it has significant defects. The legal question is directed to suitability for use as a dwelling at the relevant date, not whether the buyer intended to renovate it, whether a lender was cautious, or whether the property was commercially unattractive.

The courts have considered this issue in a number of decisions. The modern approach emphasises an objective assessment of the property’s actual condition at the effective date of the transaction. The fact that repairs are needed does not by itself mean the building was unsuitable for use as a dwelling.

Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold in uninhabitable cases is now relatively high. The Court of Appeal confirmed that the test is not met merely because a property is in serious disrepair or requires major works. The defects must be such that the building is not suitable for use as a dwelling in a real and practical sense at the relevant time.

Analysis

When working through this issue, it helps to ask the following questions in order.

First, what was the physical state of the property on the effective date of the transaction? The focus is on completion, not on what happened later and not on what the buyer planned to do after purchase.

Second, were the problems truly fundamental? Examples that may be relevant include severe structural failure, complete absence of basic living facilities, dangerous contamination, or conditions making normal residential occupation impossible. Even then, each case depends on the evidence.

Third, were the issues temporary, repairable, or part of an ordinary renovation project? If so, the property may still be suitable for use as a dwelling for SDLT purposes. A house can be outdated, partly damaged, lacking cosmetic finish, or in need of extensive works and still remain a dwelling in law.

Fourth, what contemporaneous evidence exists? Useful evidence may include survey reports, photographs, contractor assessments, environmental reports, local authority records, and completion-date documents. The more closely the evidence ties the defects to the transaction date, the better.

Fifth, does the evidence show actual unsuitability for use as a dwelling, rather than inconvenience or expense? This is often where claims fail. The law does not ask whether the property was comfortable, mortgageable, or sensible to occupy without works. It asks whether it was suitable for use as a dwelling at all.

That distinction matters. For example, missing kitchen units, old wiring, damp, heating problems, broken windows, or a defective bathroom may support an argument in some cases, but they do not automatically make the property non-residential. After Mudan, the court’s approach makes clear that only genuinely severe cases are likely to succeed.

Outcome

The practical conclusion is that an SDLT reclaim based on a property being uninhabitable will only succeed in a relatively narrow category of cases. The condition must have been so serious at completion that the property was not suitable for use as a dwelling, applying an objective legal test.

If the property was simply run down, derelict-looking, in need of modernisation, or even in need of major refurbishment, that will often not be enough. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold is now relatively high.

Practical Steps

If you are assessing whether you may have a valid SDLT reclaim, the sensible next steps are:

• Gather all evidence showing the property’s condition at the completion date.
• Obtain the survey, valuation, photographs, and any contractor or engineer reports prepared close to purchase.
• Identify which defects affected basic residential use and whether they were truly fundamental.
• Compare the facts carefully against the legal test, not just against common-sense views of habitability.
• Check whether the SDLT return treated the property as residential and whether any amendment or reclaim is still in time.
• Review the position in light of the stricter approach confirmed in Mudan.

A careful, evidence-based review is essential. These cases are highly fact-specific, and broad statements such as “the property was uninhabitable” are not enough without strong contemporaneous proof.

Conclusion

A property does not fall outside the normal residential SDLT rules just because it was in poor condition. The question is whether it was objectively unsuitable for use as a dwelling at completion. That is now a demanding test, and after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold in uninhabitable cases is relatively high.

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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