Can you reclaim SDLT if a property was not suitable for use as a dwelling when you bought it?

Introduction

Many buyers ask whether they can reclaim Stamp Duty Land Tax (SDLT) because the property they bought was in very poor condition. The key issue is not whether the property needed work, repairs or refurbishment. The real question is whether, on the effective date of the transaction, it was genuinely not suitable for use as a dwelling.

This distinction matters because the SDLT rules for residential property can change if the building was not suitable for use as a dwelling at the time of purchase. In practice, this is a fact-sensitive area, and 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 purchased a property and believes it may have been in such poor condition at completion that it was not suitable for use as a dwelling. They want to know whether they may have grounds for an SDLT reclaim and what evidence would be needed to assess the position.

Nick’s Explanation

Nick’s explanation, put into general terms, was that the starting point is evidence. He advised that if a buyer wants to argue that a property was not suitable for use as a dwelling, they should document the condition carefully and gather material showing the state of the property at the date of purchase.

That evidence may include:

• survey reports;
• electrical inspection reports;
• gas safety records;
• photographs and videos taken at or close to completion;
• contract papers, enquiries and replies;
• builder or contractor reports identifying serious defects.

The core of his reasoning was that a reclaim depends on proving the property’s actual condition at the relevant time, not simply showing that works were later carried out or that the buyer intended to renovate.

The Law

SDLT is charged under the Finance Act 2003. Whether a property is residential depends in part on whether it consists of or 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.

The key statutory provision is Schedule 4ZA to the Finance Act 2003, read together with the wider SDLT code. In broad terms, a property will usually be treated as residential if, at the effective date of the transaction, it is suitable for use as a dwelling.

If a building is so defective that it is not suitable for use as a dwelling at that date, the buyer may argue that the transaction should not have been taxed on the residential basis that was originally applied. That can affect the amount of SDLT paid and may create scope for a reclaim, depending on the facts and the basis on which the original return was filed.

However, the courts have made clear that this is a demanding test. A property does not become non-residential merely because it is old, damaged, neglected, unsafe in some respects, or in need of substantial repair. The question is whether it has crossed the line from poor condition into genuine unsuitability for use as a dwelling.

That threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Analysis

The analysis usually works in five steps.

1. Identify the relevant date

   The condition of the property must be assessed at the effective date of the transaction, which is usually completion. Later deterioration or later discoveries may help as evidence, but the legal test focuses on the property’s state at that date.

2. Separate disrepair from unsuitability

   Many properties are bought with serious defects: outdated wiring, a failed boiler, missing kitchen units, damp, leaks, broken windows, defective heating, unsafe services, or the need for major modernisation. Those facts do not automatically mean the property was not suitable for use as a dwelling. The issue is whether a person could realistically live there as a dwelling at the time of purchase.

3. Consider the nature and extent of the defects

   Evidence is strongest where the property lacked basic features needed for occupation, or where defects were so severe that occupation as a dwelling was unrealistic. Examples may include extensive structural failure, severe contamination, complete absence of essential facilities combined with wider serious defects, or conditions creating such serious danger that the building could not sensibly be used as a home.

4. Test the evidence against the modern case law

   Following Mudan, the courts are unlikely to accept that a property was unsuitable for use as a dwelling simply because it required substantial renovation. Buyers should expect HMRC to scrutinise claims closely and to argue that many defective homes remain dwellings for SDLT purposes.

5. Check whether the SDLT return can still be amended or reclaimed

   Even if the facts are strong, timing matters. SDLT amendment and repayment rules have strict limits, and the correct route depends on what was filed originally and when.

In practical terms, a successful case usually needs contemporaneous evidence showing more than inconvenience, cost, or a need for refurbishment. It needs evidence pointing to genuine unsuitability for use as a dwelling at completion.

Outcome

A buyer may have grounds for an SDLT reclaim if the property was truly not suitable for use as a dwelling when purchased, but this is not easy to establish. The legal threshold is high, and it is higher still in light of Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

If the property was merely run-down, dated, or in need of extensive repair, that will often not be enough. If, however, the defects were so serious that the building could not realistically function as a dwelling at completion, a reclaim may be worth examining.

Practical Steps

If you are assessing this issue, the sensible next steps are:

• collect photographs and videos showing the property’s condition at or very close to completion;
• obtain surveys, inspection reports, electrical reports, gas reports, contractor assessments and any local authority material;
• review the legal file, including replies to enquiries and any documents describing the condition;
• identify exactly what was wrong on the completion date, not just what was repaired later;
• consider whether the defects show genuine unsuitability for use as a dwelling rather than ordinary disrepair or refurbishment need;
• check the SDLT filing date and whether any amendment or repayment claim is still in time;
• compare the facts carefully with the current case law, especially Mudan.

Conclusion

You cannot assume that a poor-condition property qualifies for an SDLT reclaim. The question is whether it was actually not suitable for use as a dwelling at the time of purchase. Because the threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, strong contemporaneous evidence is essential before concluding that a reclaim is viable.

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.

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