Can HMRC Claw Back an SDLT Refund for an Uninhabitable Property Claim?

Introduction

People often ask whether a Stamp Duty Land Tax refund that has already been paid can later be challenged by HMRC. This question commonly arises where the refund was based on the argument that a dwelling was not suitable for use as a residence at the effective date of purchase. That area of SDLT has become much harder for taxpayers following recent case law, and many buyers are understandably concerned about the risk of HMRC reopening earlier claims.

This article explains the issue in plain English, using a generalised version of the reader’s question and Nick’s reply. It focuses on the legal position for “unsuitable for use as a dwelling” arguments and the practical risk of HMRC seeking repayment of a refund already made.

The Question

A property investor had previously received SDLT refunds on several purchases after claims were made on the basis that the properties were uninhabitable or not suitable for use as dwellings at completion. Later, the investor asked about referring another buyer with similar properties for a possible refund claim.

Nick replied that HMRC was no longer paying these uninhabitable property claims. The investor then asked the follow-up question that matters to many readers: if HMRC is no longer accepting these claims, does that increase the chance of HMRC clawing back refunds that were already paid on earlier claims?

Nick’s Explanation

Nick’s key point was straightforward: uninhabitable property claims are no longer being accepted by HMRC in the way they once were. In anonymised form, his answer was that these claims are “no longer being paid by HMRC” and that any new case would need careful review of the property condition, photographs and purchase details.

The underlying message is that the legal landscape has shifted. A refund paid in the past does not guarantee that HMRC will continue to accept the reasoning behind that refund. If HMRC changes its view, or if later case law shows the claim was outside the proper legal test, HMRC may look again at earlier repayments where it is still within the statutory time limits.

The Law

SDLT is charged under the Finance Act 2003. Whether the residential rates apply depends in part on whether the subject matter of the transaction includes a “dwelling”. A building can fail to count as a dwelling if, at the effective date of the transaction, it is not suitable for use as a dwelling.

The key statutory provisions are in Schedule 4ZA to the Finance Act 2003 for higher rates, and the wider residential SDLT framework in the Finance Act 2003 more generally. The question is not whether the property needs work, is dated, or is inconvenient to occupy. The question is whether, at the relevant date, it is suitable for use as a dwelling.

That test has been considered in a line of cases, including:

• Mudan v HMRC
• PN Bewley Ltd v HMRC
• Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799

Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold for showing that a property was not suitable for use as a dwelling is now relatively high. The courts have made clear that serious disrepair, missing items, or the need for renovation will not automatically mean the building is unsuitable for use as a dwelling. The condition must be sufficiently severe at the effective date of the transaction.

HMRC also has powers to enquire into SDLT returns and, in some situations, to make discovery assessments or seek recovery of tax that has been repaid incorrectly. Whether HMRC can claw back an earlier refund depends on the procedural route available and whether the relevant time limits have expired.

Analysis

The practical analysis usually works in four stages.

First, ask what the original claim was based on. Many historic claims were made on the basis that the property lacked a functioning kitchen or bathroom, had damp, needed rewiring, had no heating, or required major refurbishment. Those facts may sound serious, but after the recent authorities they do not necessarily meet the legal test.

Second, ask what the property was actually like on the effective date of purchase. The legal test is date-specific. It does not matter that the buyer intended a full renovation or that mortgage lenders might have been cautious. The issue is whether the building was suitable for use as a dwelling at that moment.

Third, compare those facts with the current case law. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the condition thresholds are relatively high. A property generally needs to be in a genuinely severe state before it will fall outside the concept of a dwelling. Ordinary dilapidation, outdated facilities, or substantial repair needs will often not be enough.

Fourth, consider HMRC’s procedural position. A refund already paid is not automatically final in every sense. If HMRC remains within the relevant statutory window, or has another lawful basis to revisit the matter, there is a real possibility of challenge. That does not mean every past refund will be revisited, but it does mean payment of the refund is not the same thing as permanent closure of the issue.

So does HMRC’s tougher stance on current claims increase the chance of clawback on older claims? In broad terms, yes, it can increase the risk. If HMRC now considers a category of claims legally unsound, it may review past repayments that fit that category, especially where the facts were marginal or where the claim relied on a lower threshold than the courts now accept.

That said, the answer is still fact-sensitive. The risk is not identical in every case. It depends on matters such as:

• how strong the original evidence was
• how severe the property condition really was
• whether the refund was made following an amendment, a repayment claim or some other process
• whether HMRC is still within time to act
• whether the legal basis of the claim remains arguable even under the stricter authorities

If a past claim involved a property that was truly incapable of residential occupation in any realistic sense at completion, the taxpayer may still have a stronger position. But if the claim was based only on substantial refurbishment needs, the risk of HMRC challenge is materially greater than it once was.

Outcome

The practical conclusion is that a previously paid SDLT refund for an uninhabitable property claim is not necessarily safe from later HMRC challenge. The risk of clawback has become more real because the courts have confirmed that the bar for showing a dwelling was not suitable for use is relatively high.

For new claims, the position is much harder than before. For old claims, readers should not assume that payment by HMRC means the issue can never be reopened.

Practical Steps

If you have already received a refund based on the property being uninhabitable or unsuitable for use as a dwelling, the sensible next steps are:

• gather the purchase file, including photographs, surveys, auction pack documents, completion statements and any contractor reports
• identify the exact condition of the property on the effective date of the transaction, not before or after
• review what legal basis was actually used for the claim
• check when the SDLT return was filed, when the refund was claimed, and when HMRC made the repayment
• consider whether the facts would still satisfy the stricter test following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799
• if you are considering a fresh claim, assume that ordinary renovation cases are unlikely to succeed without unusually strong facts

If you are worried about a possible clawback, it is worth reviewing the file before HMRC contacts you. Early review is usually easier than trying to reconstruct the evidence later.

Conclusion

HMRC’s current approach to uninhabitable property SDLT claims is much stricter than it used to be. Because the legal threshold is now relatively high, earlier refunds based on weaker “not suitable for use” arguments may face a greater risk of challenge. Whether HMRC can claw back a particular refund depends on the facts and on the statutory route and time limits, but readers should not assume that an earlier repayment settles the issue forever.

Legal References Used

• Finance Act 2003
• Finance Act 2003, Schedule 4ZA
• Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799
• Mudan v HMRC
• PN Bewley Ltd v HMRC

This page was last updated on 22 March 2026.

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