How do you start an SDLT reclaim for a property that may have been uninhabitable?

Introduction

Many readers search for guidance on how to begin a Stamp Duty Land Tax (SDLT) reclaim where a property may not have been suitable for use as a dwelling at the time of purchase. In practice, the first stage is usually not about making legal arguments straight away. It is about gathering the right evidence.

Where a reclaim is being considered, the strength of the case often depends on what can be proved about the property’s condition on the effective date of the transaction. Photographs, videos, survey reports, contractor comments, mortgage material, correspondence and other contemporaneous records can all matter. That is especially important now, because the legal threshold for showing that a property was not suitable for use as a dwelling is relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer is considering a possible SDLT reclaim in relation to a residential property purchase. Someone assisting with the administration wants to know how the process usually starts, what information is needed, and what kind of evidence should be collected before any formal reclaim is progressed.

Nick’s Explanation

Nick’s explanation was practical and evidence-led. In anonymised form, his main points were:

First, the initial step is to gather evidence. Only once the available material has been reviewed and there appears to be a justifiable basis for a reclaim should the matter move on to formal documents, terms, and fee arrangements.

Secondly, the more evidence the better. Nick’s wording was that “more is more”, meaning that a potential claimant should collect as many relevant photographs, videos and pieces of correspondence as possible, and organise them so they can be reviewed properly.

Thirdly, the case may involve an administrative team at an early stage if key documents are still missing. That reflects how these claims are commonly handled in practice: before any legal analysis can be finalised, the factual record must be assembled.

The key message is simple: an SDLT reclaim of this kind stands or falls on evidence of the property’s actual condition at the relevant time.

The Law

SDLT is charged under the Finance Act 2003. The amount payable depends on the nature of the land transaction and whether the property counts as residential property for SDLT purposes.

One issue that has generated substantial litigation is whether a building acquired in poor condition was, at the effective date of the transaction, “suitable for use as a dwelling”. If it was not suitable for use as a dwelling, that can affect the SDLT analysis and may in some cases support an amendment or reclaim.

The question is highly fact-sensitive. It is not enough that a property needed repair, modernisation or refurbishment. The courts have drawn a distinction between a dwelling that is run down or in disrepair, and a building whose condition is so serious that it is not suitable for use as a dwelling at all.

The current approach has been reinforced by Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. In an uninhabitable or not suitable for use case, the condition thresholds are now relatively high. A buyer must usually show more than inconvenience, dated condition, missing fittings, or a need for substantial works. The evidence must support the conclusion that the building was not suitable for use as a dwelling at the effective date.

Analysis

When assessing whether there may be a valid SDLT reclaim, the analysis usually proceeds in stages.

First, identify the legal basis of the proposed reclaim. In this type of case, that is often the argument that the property was not suitable for use as a dwelling when bought.

Secondly, fix the relevant date. For SDLT purposes, the important question is usually the condition of the property on the effective date of the transaction. Evidence created close to that date is normally the most useful.

Thirdly, gather contemporaneous evidence. This may include:

• photographs and videos taken before completion or immediately afterwards
• the survey or valuation report
• mortgage lender correspondence
• builder or contractor reports and quotations
• estate agent particulars
• emails or messages discussing the condition of the property
• invoices for urgent remedial works
• local authority or utility material showing lack of essential services where relevant

Fourthly, test whether the evidence goes far enough. A reclaim is not made out merely because the property was unattractive, neglected, or expensive to repair. Following Mudan, the threshold is relatively high. The question is whether the property truly lacked the characteristics needed to be used as a dwelling, rather than simply needing works before comfortable occupation.

Fifthly, check whether there are missing documents. In many cases, progress stops because the administrative record is incomplete. Without the core documents, it is difficult to assess merits properly or prepare a reclaim that can withstand HMRC scrutiny.

Finally, only after the evidence has been reviewed should formal next steps be taken, such as preparing instructions, agreeing terms, and drafting the reclaim or amendment.

Outcome

The practical conclusion is that a potential SDLT reclaim of this kind should begin with evidence gathering, not assumptions. A buyer should collect as much contemporaneous material as possible and assess whether it genuinely shows that the property was not suitable for use as a dwelling on the effective date.

Because the legal threshold is now relatively high after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, many properties in poor or even serious disrepair will still not meet the test. The evidence must be strong, specific and tied to the legal standard.

Practical Steps

If you are assessing this kind of SDLT reclaim, the sensible next steps are:

1. Collect all photographs and videos showing the property’s condition at or around completion.
2. Obtain the survey, valuation and any lender comments about habitability or retention issues.
3. Gather contractor reports, quotations and invoices, especially for urgent or essential works.
4. Keep all correspondence discussing defects, missing facilities, structural issues, utilities, sanitation, or safety concerns.
5. Organise the material chronologically so the condition at the effective date can be demonstrated clearly.
6. Check whether the evidence points to genuine unsuitability for use as a dwelling, rather than ordinary disrepair or refurbishment needs.
7. Review the position against the higher threshold reflected in Mudan before incurring further time and cost.

Conclusion

An SDLT reclaim based on a property being uninhabitable or not suitable for use as a dwelling depends on evidence first and legal argument second. The key issue is what the property was really like on the effective date. Given the relatively high threshold now applied by the courts, careful evidence gathering is essential before deciding whether a reclaim is realistically supportable.

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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