Can you reclaim SDLT if a property had damp or electrical problems when you bought it?

Introduction

Many buyers ask whether Stamp Duty Land Tax (SDLT) can be reclaimed if the property they bought had serious defects, such as unsafe electrics, damp, poor condition or a need for major renovation.

This question usually comes up where the buyer has heard about the “not suitable for use as a dwelling” rules. The idea is that, if a building was not suitable for use as a dwelling at the effective date of the transaction, it may fall outside the normal residential SDLT rules.

However, that is only part of the picture. Even if there is evidence of disrepair, a reclaim will often fail if the buyer already paid the lowest SDLT that could apply on the facts. In addition, the legal threshold for showing that a dwelling was not suitable for use is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer purchased a house in London and later considered whether they could reclaim SDLT. The available evidence suggested that, at the time of purchase, the property had an unsatisfactory electrical installation, damp-related issues and other defects. Some remedial works were carried out after completion, including partial rewiring and wider renovation works.

The buyer provided transaction documents and details of the SDLT paid. The key issue then became not only whether the property condition could support a claim, but also whether the SDLT originally paid was more than the minimum amount legally due.

Nick’s Explanation

Nick’s core point was simple: even if a buyer thinks there may be a “condition of the property” argument, a reclaim is not available unless too much SDLT was actually paid in the first place.

In anonymised form, his conclusion was:

“Another way of looking at this: it is not economically viable to make a stamp duty reclaim, because the minimum stamp duty possible under the buyer’s circumstances had already been paid.”

The supporting explanation was that the purchase had been taxed at the ordinary owner-occupier residential rates, with no higher rates surcharge added. The property had replaced the buyer’s main residence, so the 3% additional dwelling surcharge did not apply. That meant there was no obvious overpayment to recover.

The earlier request for photographs, invoices and reports still made sense as part of an initial screening exercise. Evidence such as survey reports, EICR findings, photographs from the listing and invoices for post-completion works can sometimes help show what the property lacked at the date of purchase. But that evidence only matters if there is a tax mechanism that could reduce the SDLT actually charged.

The Law

SDLT on land transactions in England is charged under the Finance Act 2003.

For most house purchases, the starting point is whether the subject matter is “residential property” for SDLT purposes. A building used or suitable for use as a dwelling will normally be residential property. If a building is so defective that it is not suitable for use as a dwelling at the effective date of the transaction, different SDLT treatment may be argued.

The legislation most often considered in these cases is found in:

• Finance Act 2003, section 55
• Finance Act 2003, section 116
• Schedule 4ZA to the Finance Act 2003, dealing with higher rates for additional dwellings

Section 116 is especially important because it helps define residential property, including land that consists of or includes a building that is used or suitable for use as a dwelling.

Where a buyer argues that a building was not suitable for use as a dwelling, the question is judged at the effective date of the transaction, usually completion. The test is objective. It is not enough that the property was unattractive, dated, inconvenient, expensive to repair or in need of substantial works.

The courts and tribunals have repeatedly considered this issue. The current position is stricter than many buyers expect. In particular, in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the Court of Appeal confirmed that the threshold is relatively high. Serious defects do not automatically mean that a property was unsuitable for use as a dwelling for SDLT purposes.

Analysis

There are two separate questions in a case like this.

First, was the property genuinely not suitable for use as a dwelling at completion?

Evidence such as failed electrical tests, damp, penetrating moisture, rising damp, defective rendering and later repair invoices may all be relevant. But those facts do not by themselves decide the issue. The real question is whether the defects were so serious that the property could not reasonably be used as a dwelling on the completion date.

After Mudan, the threshold is relatively high. A house can still be “suitable for use as a dwelling” even if it needs major repairs, rewiring, damp treatment or refurbishment. Many properties bought for renovation remain residential for SDLT purposes.

Second, even if there were an arguable condition point, did the buyer actually overpay SDLT?

That was the decisive issue here. Once the transaction details and SDLT paid were checked, it became clear that:

• the purchase price had been taxed at the ordinary residential owner-occupier rates;
• the 3% higher rates surcharge had not been charged; and
• the purchase was treated as a replacement of the buyer’s main residence.

That matters because many SDLT reclaim cases arise where a buyer paid the higher rates surcharge and later argues that the property was not residential, or that another relief should have applied. If no surcharge was paid and the buyer already paid the lowest rate available on the facts, there may be nothing to reclaim.

So, even if the buyer had further evidence of disrepair, that evidence would not create a refund unless it changed the tax analysis in a way that reduced the SDLT below what had already been paid.

In practical terms, the claim failed before any detailed litigation about habitability was needed. The tax paid was already the minimum amount due under the buyer’s circumstances.

Outcome

The practical conclusion is that no SDLT reclaim is available where:

• the buyer paid the correct owner-occupier residential rates;
• no higher rates surcharge was charged; and
• there is no other relief or reclassification that would reduce the SDLT further.

Evidence of damp, unsafe electrics or renovation costs does not by itself produce a refund. It only matters if it supports a legally valid route to a lower SDLT charge.

And where the argument is that the property was uninhabitable or not suitable for use as a dwelling, readers should be aware that the threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Practical Steps

If you are assessing a possible SDLT reclaim in a similar case, work through these steps:

1. Check the SDLT return and SDLT5 certificate to confirm exactly what was paid.
2. Confirm whether the higher rates for additional dwellings were charged.
3. Check whether the purchase replaced your only or main residence.
4. Review the contract, TR1 and completion statement to confirm the transaction structure.
5. Gather evidence showing the property’s condition at completion, not just after works began. Useful evidence may include survey reports, EICR reports, photographs, mortgage valuation comments and listing particulars.
6. Separate evidence of pre-existing defects from evidence of improvements chosen by the buyer after completion.
7. Ask the key legal question: if the property condition argument succeeded, would the SDLT actually fall below the amount already paid?

If the answer to that last question is no, the claim is unlikely to be worth pursuing.

Conclusion

A property can have real defects and still not give rise to an SDLT refund. The first issue is whether the building was truly not suitable for use as a dwelling at completion, and that is now a demanding test. The second issue is whether too much SDLT was paid at all. If the buyer already paid the minimum SDLT possible under the facts, there is nothing to reclaim.

Legal References Used

• Finance Act 2003, section 55
• 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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