Can you reclaim SDLT if a property had damp, mould or neglect when you bought it?

Introduction

Many buyers ask whether they can reclaim Stamp Duty Land Tax (SDLT) after buying a property that was in poor condition. A common version of the question is whether serious damp, mould, disrepair or neglect means the property was not suitable for use as a dwelling, so that the residential SDLT rules should not have applied.

This matters because SDLT can be much higher on residential property, especially where the 3% higher rates for additional dwellings were charged. If a property was genuinely not suitable for use as a dwelling on the effective date of the transaction, different SDLT treatment may apply. But the legal threshold is now relatively high, especially following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

The issue can be put like this: a buyer purchased a property in England or Northern Ireland within the last four years, paid SDLT including the 3% higher rates, and later wondered whether the property’s condition at completion meant it was not suitable for use as a dwelling. The concerns may include damp, mould, water damage, neglect, or general disrepair.

The practical question is whether those defects are enough to justify an SDLT reclaim.

Nick’s Explanation

Nick’s explanation, put in general terms, is that buyers often focus on visible defects such as damp, mould or neglect, but those issues do not automatically make a property non-residential for SDLT purposes. The key question is whether the property was actually suitable for use as a dwelling at the effective date of the purchase.

In substance, his point is that a reclaim may be worth considering only where the condition problems were serious enough to take the property outside the definition of a dwelling at completion. Paying the 3% higher rate does not by itself create a refund right. The condition of the property must meet the legal test.

That approach is consistent with HMRC’s published view and with the case law: ordinary disrepair, even if expensive to fix, is often not enough. The issue is not whether the property needed work, but whether it had crossed the line into being unsuitable for use as a dwelling.

The Law

SDLT is charged under the Finance Act 2003. Different rates can apply depending on whether the subject matter is residential property, non-residential property, or mixed property.

For SDLT purposes, a building is generally residential property if it is used or suitable for use as a dwelling, or is in the process of being constructed or adapted for such use. The statutory starting point is found in section 116 Finance Act 2003.

Where a buyer already owns another dwelling, the higher rates for additional dwellings may apply under Schedule 4ZA Finance Act 2003. Those higher rates usually add 3% to the standard residential rates.

If a property was not suitable for use as a dwelling at the effective date of the transaction, it may fall outside the residential rules. In some cases, that can mean the higher residential rates were charged incorrectly. A refund claim may then be possible, subject to the statutory time limits.

The problem for many taxpayers is that the legal test is strict. The courts have repeatedly treated “suitable for use as a dwelling” as a practical, real-world test. It is not enough that the property was unattractive, dated, neglected, or in need of substantial renovation.

The current position must be read in light of Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. That decision makes clear that the threshold for showing a property was uninhabitable or not suitable for use as a dwelling is now relatively high.

Analysis

When analysing whether an SDLT reclaim is possible, the question should be approached in stages.

First, identify the relevant date. The test is applied at the effective date of the transaction, usually completion. Later discoveries, later deterioration, or later renovation costs do not determine the SDLT position unless they show what the condition was at that date.

Second, look at the actual defects. Damp, mould, defective plaster, old kitchens or bathrooms, damaged flooring, heating problems, leaks, and general neglect may all be relevant facts. But on their own they do not necessarily mean the building was unsuitable for use as a dwelling. Many homes are still capable of occupation despite serious defects.

Third, ask whether the property retained the essential characteristics of a dwelling. Questions commonly include:

• Was there functioning sanitation?
• Was there a usable kitchen or the basic ability to prepare food?
• Was there access to water and electricity?
• Was the structure broadly intact and safe enough for residential occupation?
• Could someone realistically live there, even if only in poor or inconvenient conditions?

Fourth, consider whether the defects were so severe that occupation as a dwelling was not realistic at all. Examples that may support a reclaim include extreme structural failure, complete absence of essential services, severe safety hazards making occupation impossible, or conditions requiring major reconstruction before anyone could live there.

Fifth, distinguish between “needs refurbishment” and “not suitable for use as a dwelling”. That distinction is critical. A property can be mortgageable or unmortgageable, habitable or uninhabitable in everyday language, yet still count as suitable for use as a dwelling for SDLT. The tax test is legal and factual, not simply descriptive or based on survey wording.

Sixth, apply the higher threshold confirmed by Mudan. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, courts are unlikely to accept that ordinary disrepair, damp, mould, missing fittings, or renovation needs are enough unless the facts show something more fundamental. The condition must be serious enough that the property had ceased to be suitable for use as a dwelling at completion.

Seventh, check time limits. A buyer seeking to amend an SDLT return or claim a repayment must act within the applicable statutory deadlines. In practice, many people focus on whether the purchase was within the last four years because that is often relevant to whether a claim is still in time, but the exact route and deadline depend on the procedural basis of the claim.

Outcome

The practical answer is that a refund is possible only in a limited category of cases. The fact that a property had damp, mould, neglect, or needed substantial works does not by itself mean SDLT was overpaid. If the property was still suitable for use as a dwelling at completion, the residential rates, including the 3% higher rates where applicable, were likely charged correctly.

In an uninhabitable or not suitable for use case, the condition threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. That means many claims based only on poor condition are unlikely to succeed.

Practical Steps

If you want to assess whether a reclaim is realistic, the sensible next steps are:

• Obtain the completion date and SDLT return details.
• Gather contemporaneous evidence of the property’s condition at completion, such as survey reports, photographs, videos, contractor reports, insurance records, and correspondence from the time.
• Identify whether essential facilities were absent or unusable, including sanitation, water, electricity, cooking facilities, and structural safety.
• Separate evidence of genuine non-suitability from evidence that the property merely needed refurbishment.
• Check whether any claim is still within the statutory time limit.
• Compare the facts carefully with the current case law, especially Mudan.

A buyer should be cautious about promotional checklists suggesting that any property with damp, mould or neglect automatically qualifies for an SDLT reclaim. The legal test is narrower than that.

Conclusion

You cannot assume that poor condition creates an SDLT refund. The key issue is whether the property was actually unsuitable for use as a dwelling on completion. After Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, that is a relatively demanding test, and many run-down properties will still count as dwellings for SDLT purposes.

Legal References Used

• Finance Act 2003, section 116
• Finance Act 2003, Schedule 4ZA
• 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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