Do you need a surveyor’s written report to claim SDLT relief for an uninhabitable property?

Introduction

People often ask whether they need a formal surveyor’s report when arguing that a property was not suitable for use as a dwelling at the time of purchase for Stamp Duty Land Tax purposes. This usually comes up after completion, when the buyer is gathering documents such as the SDLT return, SDLT5 certificate, title documents and completion statement, and wants to know whether further evidence is worth the cost.

The short answer is that a written surveyor’s report is not always mandatory, but evidence is crucial. Whether a report is needed depends on how strong the other evidence is and whether the property condition genuinely meets the legal test. That test is now relatively strict following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

The Question

A buyer had already obtained some conveyancing documents, including the SDLT submission receipt and title deeds, and was trying to collect the remaining paperwork, including the completion statement and SDLT5 certificate. The buyer also had photographs and an oral opinion from the surveyor who inspected the property at the time of purchase, but no written report had been produced then.

The buyer wanted to know whether paying for a later written report was necessary in support of a possible SDLT reclaim based on the argument that the property was not suitable for use as a dwelling when bought. The buyer also mentioned having evidence that the property had been empty before purchase.

Nick’s Explanation

Nick’s explanation can be put in general terms like this: the basic conveyancing papers are important, but they may not be enough on their own to prove that a property was uninhabitable for SDLT purposes. A completion statement and SDLT5 certificate are usually part of the core file because they help confirm the transaction details and what was submitted to HMRC.

On the condition evidence, the key point is that a surveyor’s written report is not automatically required in every case. However, if the claim depends on showing that the property was not suitable for use as a dwelling on the effective date of the transaction, independent professional evidence can be very important. Photos, contemporaneous messages, invoices, mortgage material, local authority records and similar documents may all help, but where the condition point is disputed, a proper expert report can carry significant weight.

Nick’s reasoning also points to a more practical reality: if the evidence is weak, incomplete or only produced long after the event, HMRC is more likely to challenge the claim. In that situation, a buyer may decide that the cost of a report is justified if it materially improves the evidential position.

The Law

SDLT is charged under the Finance Act 2003. The key distinction in these cases is whether the property acquired was “residential property” at the effective date of the transaction.

Section 116 Finance Act 2003 provides that 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. If a building is not suitable for use as a dwelling at the relevant date, the buyer may argue that the purchase was not of residential property for SDLT purposes.

That issue matters because the SDLT treatment of non-residential or mixed property can differ materially from the treatment of residential property, including the rates that apply.

The courts have repeatedly said that the question is an objective one. It is not enough that the buyer intended to renovate, or that the property was old, vacant or in poor decorative condition. The condition must be such that, viewed realistically, the building was not suitable for use as a dwelling at the effective date.

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. That decision reinforces that disrepair, dated condition, or the need for substantial works does not by itself take a property outside the category of residential property. The defect must go to actual suitability for use as a dwelling, not merely desirability, comfort or mortgageability.

Analysis

There are usually two separate questions in a case like this.

1. What documents are needed to understand the transaction?
2. What evidence is needed to prove the condition of the property at completion?

On the first question, the core transaction documents normally include:

• the SDLT return submission evidence
• the SDLT5 certificate
• the completion statement
• the transfer or title documents
• the contract pack if available

These documents help establish what was bought, when it was bought, for how much, and how it was treated for SDLT purposes at the time.

On the second question, evidence of condition is often the decisive issue. A buyer claiming that the property was not suitable for use as a dwelling should ideally gather evidence that is contemporaneous with the purchase date. Examples include:

• survey reports
• photographs or videos taken close to completion
• builder quotations identifying serious defects
• invoices for immediate remedial works
• mortgage retention or refusal evidence based on condition
• local authority notices or environmental health records
• insurance records
• utility disconnection evidence where relevant

An “empty property certificate” or evidence that the property had not been occupied may help with background facts, but vacancy alone does not prove that the building was unsuitable for use as a dwelling. A property can be empty and still be residential for SDLT purposes.

The same applies to oral comments from a surveyor. They may be useful, but they are harder to rely on than a written report, especially if HMRC asks for proof. A report produced later can still help, but it is usually strongest if it clearly states:

• the surveyor inspected the property at or around the purchase date
• what defects existed at that time
• why those defects meant the property was not suitable for use as a dwelling
• whether the opinion is based on contemporaneous notes, photographs or records

That said, a later report is not a magic solution. If the underlying facts do not meet the legal threshold, a report cannot turn a renovation case into an uninhabitable case. After Mudan, the threshold is high. Missing kitchens or bathrooms, defective services, structural danger, severe water ingress, contamination, or other serious defects may be relevant, but each case turns on the overall factual picture at the effective date.

Outcome

A buyer in this position should not assume that a written surveyor’s report is always required, but should also not assume that photos and an oral opinion will be enough. The real issue is whether the evidence, taken as a whole, can prove that the property was objectively not suitable for use as a dwelling when purchased.

If the case is marginal, a written report may be worth obtaining. If the property was merely run-down, vacant or in need of renovation, the claim is much less likely to succeed, particularly in light of Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Practical Steps

If you are assessing a possible SDLT reclaim on this basis, it is sensible to:

1. Collect the core transaction documents, including the SDLT5 certificate and completion statement.
2. Gather all contemporaneous evidence of the property’s condition at the purchase date.
3. Separate evidence of vacancy from evidence of actual unsuitability for use.
4. Review whether the defects were serious enough to prevent use as a dwelling, not just to make the property unattractive or in need of works.
5. Consider obtaining a surveyor’s written report if there is no clear contemporaneous professional opinion and the condition issue is central to the claim.
6. Make sure any expert report addresses the legal test, not just general disrepair.

Where possible, the evidence should point to the condition on the effective date of the transaction, because later deterioration or later works do not determine the SDLT position at purchase.

Conclusion

A surveyor’s written report is not automatically required for an SDLT uninhabitable property argument, but strong evidence is essential. Core conveyancing papers help establish the transaction, while condition evidence proves the substantive point. Because the legal threshold is now relatively high after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, a claim should only be pursued where the facts genuinely show that the property was not suitable for use as a dwelling at the relevant date.

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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