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 damp, neglected or in very poor condition at the time of purchase. This usually comes up where the buyer believes the dwelling was not fit to live in and so should not have been treated as a residential property for SDLT purposes.

This is an area where the law has become stricter. In particular, the threshold for showing that a property was not suitable for use as a dwelling is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer wants to know whether they may be entitled to an SDLT reclaim. The general scenario is this:

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

The key issue is whether the property was truly unsuitable for use as a dwelling on the effective date of the transaction, rather than merely in poor or dated condition.

Nick’s Explanation

Nick’s explanation, put into public-facing terms, is that a possible reclaim depends on the facts of the particular purchase and cannot be answered just by saying the property had hazards or needed refurbishment.

The important point in his reasoning is that SDLT treatment turns on the legal character of the property at the time of completion. A buyer may have a potential argument only if the property was not suitable for use as a dwelling at that time. If it was still capable of residential use, even though it needed substantial works, HMRC may still treat it as residential property and the higher rates may still apply.

In practical terms, the question is not simply whether the property was unattractive, defective or in need of repair. The question is whether its condition crossed the legal threshold for unsuitability as a dwelling.

The Law

SDLT on land transactions in England and Northern Ireland is governed by the Finance Act 2003.

For these cases, the main legal question is whether the property was “residential property” at the effective date of the transaction. Broadly, a building used or suitable for use as a dwelling will usually be residential property for SDLT purposes.

If a purchase is of an additional dwelling and the statutory conditions are met, the higher rates for additional dwellings may apply, adding a 3% surcharge.

Where a taxpayer argues that the property was not suitable for use as a dwelling, they are usually trying to show that the building should not have been treated as residential property at all. If that argument succeeds, it can affect the SDLT rate and may lead to a refund.

The courts have repeatedly made clear that this is a fact-sensitive test. The condition of the property must be assessed at the transaction date. The focus is on actual suitability for use as a dwelling, not on whether the buyer intended to renovate it, whether a lender had concerns, or whether works were later carried out.

The recent Court of Appeal decision in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799 is especially important. It confirms that the threshold for proving unsuitability is relatively high. Serious disrepair, lack of modernisation, damp, mould, infestation or neglect will not automatically be enough. The defects must be such that, viewed realistically, the building was not suitable for use as a dwelling at the relevant date.

Analysis

The issue can be analysed in stages.

1. Was the claim made in time?

   As a practical starting point, many buyers asking about a reclaim are within four years of the effective date of the transaction. Time limits matter, so this should be checked first.

2. Was the property in England or Northern Ireland?

   SDLT applies only in England and Northern Ireland. Different taxes apply in Scotland and Wales.

3. What was the condition of the property on completion?

   This is the central question. Evidence may include survey reports, photographs, contractor reports, utility status, local authority notices and completion documents. The legal test is not whether the property needed work, but whether it was suitable for use as a dwelling at that date.

4. Did the defects make the property genuinely uninhabitable in the legal sense?

   This is where many claims fail. A property can be unpleasant, unhealthy, neglected or expensive to repair and still remain legally suitable for use as a dwelling. Following Mudan, the threshold is relatively high. The courts look for defects that go beyond disrepair and show that the building could not realistically function as a dwelling at the transaction date.

5. If it was still residential property, did the 3% higher rates apply correctly?

   If the property remained suitable for use as a dwelling, it will usually still be residential property for SDLT purposes. In that case, if the buyer owned another dwelling and the statutory conditions for higher rates were met, the 3% surcharge may have been correctly charged.

6. If it was not suitable for use as a dwelling, is a reclaim possible?

   Potentially yes. If the property was not suitable for use as a dwelling at the effective date, the SDLT treatment may have been wrong, which can open the door to an amendment or repayment claim, subject to the statutory time limits and evidence.

Examples help show the distinction:

• a property with dated kitchens, damp patches, mould, broken plaster and general neglect may still be residential;
• a property requiring rewiring, a new boiler and structural repairs may still be residential if it can still function as a dwelling;
• but a property with defects so severe that it could not realistically be occupied as a dwelling at completion may fall outside the residential definition.

Each case turns on its own evidence. Labels such as “uninhabitable” or “not mortgageable” do not decide the SDLT position by themselves.

Outcome

A buyer should not assume that poor condition automatically creates an SDLT refund claim. The correct conclusion is narrower:

• there may be scope for a reclaim if the property was genuinely not suitable for use as a dwelling at the date of purchase; but
• the legal threshold is now relatively high, especially after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799; and
• many properties with damp, mould, neglect or major repair needs will still count as residential property for SDLT.

Practical Steps

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

1. check the completion date to make sure any amendment or repayment claim is still in time;
2. obtain the SDLT return and calculation showing what was paid, including whether the 3% higher rates were charged;
3. gather evidence of the property’s condition at completion, especially surveys, photographs, invoices, reports and any official notices;
4. separate evidence of condition at completion from works done afterwards, because later renovation does not prove the original SDLT treatment was wrong;
5. analyse whether the defects show true unsuitability for use as a dwelling, rather than ordinary or even serious disrepair; and
6. compare the facts carefully against current case law, including Mudan, before making a reclaim.

Because this is a fact-sensitive area with strict time limits, the evidence should be reviewed closely before any claim is submitted.

Conclusion

You may be able to reclaim SDLT where a property was not suitable for use as a dwelling when you bought it, but the test is demanding. Poor condition alone is not enough. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold for an uninhabitable or unsuitable-for-use argument is relatively high, so the result will depend on the quality of the evidence and the exact condition of the property at completion.

Legal References Used

• Finance Act 2003
• Higher rates for additional dwellings provisions within 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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