Can you reclaim the 3% SDLT surcharge if a property was in poor condition when you bought it?

Introduction

Many buyers ask whether they can recover Stamp Duty Land Tax (SDLT), especially the 3% higher rates charge, where a property was affected by damp, mould, disrepair or neglect when they bought it. This question usually comes up where the buyer thinks the property was not suitable for use as a dwelling at the effective date of the transaction.

The issue matters because SDLT on residential property is charged differently from SDLT on non-residential property. If a building was truly not suitable for use as a dwelling at completion, the transaction may fall outside the normal residential rules. In some cases that can affect both the rate of SDLT and whether the 3% higher rates for additional dwellings applied. But the legal test is strict, and recent case law has made clear that the threshold is now relatively high.

The Question

A buyer wants to know whether they may be entitled to an SDLT reclaim where:

• the purchase took place within the last four years;
• the property was in England or Northern Ireland;
• the property had serious condition issues at the date of purchase, such as damp, mould or general neglect; and
• the buyer paid the 3% higher rates surcharge.

The core question is whether those condition problems meant the property was not suitable for use as a dwelling when it was bought, so that too much SDLT may have been paid.

Nick’s Explanation

Nick’s explanation can be summarised like this: poor condition on its own is not enough. The real question is whether, at the effective date of the transaction, the building was objectively unsuitable for use as a dwelling.

In anonymised form, his point is that buyers often focus on visible defects such as damp, mould, outdated interiors or general neglect, but SDLT law asks a narrower question. A property does not stop being residential merely because it needs repair, modernisation or substantial works. The test is whether the defects were so serious that the building could not realistically be used as a dwelling at that time.

That is now harder to establish than some earlier claims suggested. In particular, 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.

Nick’s practical reasoning is that a reclaim may be worth examining where there was severe structural or health-related failure at completion, but a buyer should not assume that ordinary disrepair, contamination, missing fittings, or the need for refurbishment will qualify.

The Law

SDLT is charged under the Finance Act 2003. Whether a property is taxed as residential or non-residential depends on the statutory definition of “residential property”.

The key provision is Schedule 4ZA to the Finance Act 2003, which deals with the higher rates for additional dwellings. Broadly, the 3% surcharge applies where:

• the main subject matter of the transaction includes a major interest in a single dwelling;
• the chargeable consideration meets the relevant threshold; and
• the buyer owns, or is treated as owning, another dwelling and is not replacing their only or main residence.

Whether something is a “dwelling” is therefore central. 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.

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

• P N Bewley Ltd v HMRC;
• Fish Homes Ltd v HMRC;
• Mudan v HMRC, culminating in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The authorities show that the test is objective and fact-sensitive. The condition of the property must be assessed as at the effective date of the transaction. The question is not whether the buyer intended major works, nor whether the property was unattractive to occupy, but whether it was suitable for use as a dwelling at that time.

Analysis

To analyse a possible reclaim, it helps to work through the issue in stages.

First, identify what SDLT was paid and why. If the buyer paid residential SDLT plus the 3% higher rates surcharge, that usually means the property was treated as a dwelling and as an additional dwelling.

Second, ask whether the property was in fact suitable for use as a dwelling at completion. This is the key issue. Relevant evidence may include:

• survey reports prepared before exchange or completion;
• photographs showing the condition at the time;
• contract papers and replies to enquiries;
• builder or engineer reports;
• local authority notices or environmental health evidence;
• evidence of missing essential services, severe structural failure, dangerous contamination or legal prohibition on occupation.

Third, distinguish serious unsuitability from ordinary disrepair. A property may still be suitable for use as a dwelling even if it has:

• damp or mould;
• dated or damaged kitchens and bathrooms;
• old wiring or heating issues that are repairable;
• cosmetic neglect;
• a need for renovation before comfortable occupation.

Those issues may make the property unpleasant, inconvenient or expensive to restore, but that does not necessarily mean it was not suitable for use as a dwelling.

Fourth, consider the effect of Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. The Court of Appeal confirmed that the threshold in these cases is relatively high. The fact that a property needs major work does not by itself take it outside the residential definition. The court’s approach makes it more difficult to argue that a building was not suitable for use as a dwelling unless the defects were truly fundamental.

Fifth, if the property was not suitable for use as a dwelling, consider the SDLT consequences. Depending on the facts, that may mean:

• the property was not “residential property” for SDLT purposes; and
• the 3% higher rates under Schedule 4ZA should not have applied.

That can create scope for an amendment or reclaim, subject to the applicable time limits and procedural rules.

Sixth, check timing. The question refers to purchases within the last four years. In practice, SDLT reclaim timing depends on the route being used, such as amendment of the return or a claim for overpayment relief. The precise deadline needs to be checked against the transaction date and the filing history.

Outcome

A buyer may have grounds to review an SDLT reclaim if the property’s condition at completion was so serious that it was objectively not suitable for use as a dwelling. But a claim is not likely to succeed merely because the property had damp, mould, neglect or needed refurbishment.

Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the bar in uninhabitable or not suitable for use cases is now relatively high. Claims should therefore be based on strong contemporaneous evidence, not just on the fact that substantial works were later carried out.

Practical Steps

If you want to assess your position, the sensible next steps are:

1. Obtain the SDLT return and confirm exactly what was filed and paid.
2. Collect contemporaneous evidence of the property’s condition at completion.
3. Identify whether the defects affected basic suitability for use as a dwelling, rather than comfort or value.
4. Check whether any local authority, environmental health or structural reports existed at the time.
5. Review the purchase date carefully to see what claim route, if any, is still open.
6. Compare the facts against the current case law, especially Mudan.

Where the evidence shows only disrepair or the need for renovation, a reclaim is unlikely to succeed. Where the evidence shows fundamental unsuitability at the effective date, the position may justify a detailed SDLT review.

Conclusion

You cannot assume that a run-down property qualifies for an SDLT reclaim. The legal question is whether it was suitable for use as a dwelling when bought. That is a demanding test, and it is now applied strictly. A reclaim is most likely to be worth pursuing only where there is strong evidence that the property was genuinely not suitable for residential use at completion.

Legal References Used

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

This page was last updated on 22 March 2026.

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