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

Introduction

Many buyers ask whether they can reduce or reclaim Stamp Duty Land Tax (SDLT) if the property they bought was in very poor condition. The issue usually arises where the dwelling needed major repairs, had no working facilities, or looked unfit to live in on the purchase date.

The legal test is important because SDLT on residential property depends on whether the building was “suitable for use as a dwelling” at the effective date of the transaction. If it was not, different SDLT treatment may apply. But the threshold is now relatively high, especially after the Court of Appeal decision in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer asked for guidance on whether they might have an SDLT claim or refund based on the condition of a property they purchased. The concern was whether the dwelling was in such poor condition at completion that it should not have been treated as residential property for SDLT purposes.

Nick’s Explanation

Nick’s response was that the answer depends heavily on the exact condition of the property at the purchase date and the available evidence. In anonymised form, his point was essentially that more detail is needed about the buyer’s circumstances before a proper view can be given.

That approach is correct. These cases are highly fact-sensitive. The key question is not whether the property needed work, nor whether a buyer intended to renovate it, but whether it was actually unsuitable for use as a dwelling at the effective date of the transaction.

In practice, a proper review usually needs evidence about matters such as:

• whether there was a functioning kitchen and bathroom;
• whether the property had safe and usable services such as water, electricity and drainage;
• whether there was serious structural failure or danger;
• whether the property could lawfully and physically be occupied as a home at completion; and
• what contemporaneous evidence exists, such as survey reports, photographs, invoices and completion documents.

The Law

SDLT is charged under the Finance Act 2003. Whether property is residential or non-residential matters because the tax rates and rules differ.

The core statutory definition is found in section 116 Finance Act 2003. Broadly, “residential property” 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 case law has developed the meaning of “suitable for use as a dwelling”. The question is usually assessed at the effective date of the transaction, normally completion. The test is objective. It is not enough that the buyer planned major works, or that the property was unattractive, dated or inconvenient to occupy.

Recent authority has made clear that the legal threshold for showing unsuitability is demanding. 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.

Analysis

The analysis usually works in stages.

First, identify the relevant date. The property must be assessed in its actual state at the effective date of the transaction. Later works, later discoveries, or later deterioration do not decide the issue, although they may provide evidence of the earlier condition.

Second, ask whether the building retained the basic character of a dwelling. A house can still be “suitable for use as a dwelling” even if it is run-down, in need of modernisation, missing some fittings, or not immediately comfortable to live in.

Third, consider whether the defects were so serious that the property could not realistically be used as a dwelling at all. Examples that may be relevant include:

• no functioning sanitation;
• no usable water supply;
• serious structural instability;
• conditions creating immediate danger to occupants; or
• such extensive disrepair that occupation as a home was not realistically possible.

Fourth, distinguish between major renovation and true unsuitability. A property can require extensive refurbishment and still count as residential property for SDLT. That is often the decisive point in failed refund claims.

Fifth, test the evidence. Strong contemporaneous evidence is usually essential. Helpful material may include:

• RICS surveys or structural reports prepared close to completion;
• dated photographs and videos;
• contract papers and replies to enquiries;
• builder reports prepared before or at completion;
• evidence that utilities were disconnected or unusable;
• local authority notices, if any; and
• mortgage valuation comments, insurance issues or lender concerns.

After Mudan, courts are likely to look carefully at whether the property still had the essential nature of a dwelling despite its defects. A poor condition argument will not succeed simply because the buyer could not sensibly move in straight away, or because substantial works were commercially necessary.

Outcome

The practical conclusion is that a property condition SDLT claim may exist only where the dwelling was genuinely not suitable for use as a dwelling on the purchase date. The threshold is high. Many properties that are derelict-looking, stripped out, or in serious need of renovation still remain residential for SDLT purposes.

If the evidence only shows disrepair, inconvenience, outdated condition or planned refurbishment, a refund claim is unlikely to succeed. If the evidence shows the property lacked the basic features needed for occupation as a home, there may be a stronger argument.

Practical Steps

If you are assessing your own position, the sensible next steps are:

1. Identify the effective date of the transaction, usually completion.
2. Gather contemporaneous evidence of the property’s condition on that date.
3. Check whether the property had working sanitation, water, electricity, heating, kitchen and bathroom facilities.
4. Obtain or review any survey, engineer or builder reports prepared around completion.
5. Compare the facts against the current case law, especially the stricter approach confirmed in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.
6. Review whether the SDLT return treated the property as residential and whether any amendment or reclaim route is still open.

Because these cases turn on detailed facts, the strength of the evidence is often more important than the buyer’s own description of the property as “uninhabitable”.

Conclusion

A buyer cannot assume that a run-down property falls outside the residential SDLT rules. The legal question is whether the property was objectively suitable for use as a dwelling at completion. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the condition threshold for proving unsuitability is now relatively high.

Legal References Used

• Finance Act 2003, section 116
• 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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