Can a derelict bungalow with paddock land qualify for non-residential or mixed-use SDLT rates?

Introduction

Buyers often ask whether a run-down property can be taxed at non-residential SDLT rates rather than residential rates. This usually comes up where the building has serious defects, has been empty for a long time, or is sold with extra land such as paddocks or fields.

The question matters because the SDLT difference can be significant, especially where the higher rates for additional dwellings would otherwise apply. The difficulty is that not every neglected or empty house is treated as “not suitable for use as a dwelling”, and not every piece of adjoining land makes a purchase mixed-use.

In a case involving a bungalow with paddock land, structural issues and evidence suggesting possible redevelopment, the correct SDLT treatment depends on the facts at completion and on how the legislation and case law apply to those facts.

The Question

A buyer is purchasing a property consisting of a bungalow and about 2.7 acres of paddock land. The bungalow and the land have separate access points from the highway. The bungalow has been unoccupied for several years. The seller has said there has been subsidence, insurance money was received, and remedial works were not carried out. The building has also suffered theft of copper piping.

The sales particulars describe the dwelling as vacant and in need of substantial improvement before it is suitable to live in. They also refer to structural damage, structural failure in part of the building, a dilapidated outbuilding, and the possibility that some buyers may demolish and replace the dwelling, subject to planning permission.

The buyer wants to know whether:

• the property could be treated as not suitable for use as a dwelling, so that non-residential SDLT rates apply; or
• the paddock means the purchase is mixed-use, which would also lead to non-residential SDLT rates.

The buyer also indicates that the purchase may be an additional property, so the higher residential rates could otherwise be in point.

Nick’s Explanation

Nick identified three broad SDLT possibilities:

• full residential rates apply;
• the property is not suitable for use as a dwelling, so non-residential rates apply; or
• the paddock makes the purchase mixed-use, so non-residential rates apply.

He also made an important practical point: the SDLT position should be assessed properly at the time of purchase. A well-reasoned return filed on the correct basis is usually stronger than paying residential SDLT first and trying to recover it later.

On the additional dwelling point, Nick explained that if the purchase is genuinely a replacement of the buyer’s only or main residence, the higher rates may not apply. But if it is not a replacement, the higher rates would normally apply unless the transaction falls outside residential treatment because the property is either not suitable for use as a dwelling or is mixed-use.

In anonymised form, his reasoning was that there may be an argument on both fronts:

• serious structural issues, long vacancy and missing services may support an argument that the bungalow was not suitable for use as a dwelling at completion; and
• the paddock, especially if separately accessed and used for agricultural or non-domestic purposes, may fall outside the dwelling’s garden or grounds.

He also noted that if HMRC opens an enquiry, the buyer must be able to defend the filing position with evidence showing why the property was not suitable for use as a dwelling or why the land was not part of the garden or grounds.

The Law

SDLT is charged under the Finance Act 2003. Whether residential or non-residential rates apply depends on the nature of the subject matter acquired at the effective date of the transaction, usually completion.

Broadly:

• Residential rates apply if the main subject matter consists of an interest in a dwelling.
• Non-residential rates apply if the property is not residential property.
• Mixed-use rates apply where the transaction includes both residential and non-residential property. In practice, mixed-use transactions are charged at non-residential rates.

The key statutory provisions are in section 55 and section 116 Finance Act 2003, together with Schedule 4ZA for higher rates on additional dwellings.

For these purposes, “residential property” includes:

• a building used or suitable for use as a dwelling, or in the process of being constructed or adapted for such use; and
• land that is or forms part of the garden or grounds of such a building.

That means two separate issues often arise:

1. Was the building used or suitable for use as a dwelling at completion?
2. If there is extra land, is that land part of the garden or grounds of the dwelling, or is it non-residential land in its own right?

Case law has shaped both questions. Historically, buyers often relied on severe disrepair to argue that a building was not suitable for use as a dwelling. However, the threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. A property does not cease to be residential merely because it is in poor condition, vacant, or in need of major renovation. The condition must be serious enough that, viewed realistically at the effective date, the building is not suitable for use as a dwelling.

Earlier authorities such as P N Bewley Ltd v HMRC remain relevant to the general approach, but any “uninhabitable” argument now has to be tested against the stricter approach confirmed in Mudan.

On mixed-use, the question is whether the additional land is part of the dwelling’s garden or grounds. That is a factual question. Size alone is not decisive. Relevant factors include layout, access, physical separation, actual use, and whether the land serves the dwelling in the ordinary sense or instead has an independent non-residential character, such as agricultural use.

Analysis

This kind of case should be worked through in stages.

First, ask whether the purchase is a replacement of the buyer’s only or main residence. If it is, the higher rates in Schedule 4ZA may not apply even if the property is residential. If it is not a replacement, and the buyer already owns another dwelling, the higher rates normally apply unless the transaction is properly treated as non-residential or mixed-use.

Second, look at the bungalow itself. The evidence here points to a building in very poor condition:

• long-term vacancy;
• subsidence and alleged structural failure;
• missing copper piping;
• marketing material saying substantial improvements are needed before occupation; and
• suggestions that buyers may demolish and redevelop.

Those facts may support an argument that the building was not suitable for use as a dwelling at completion. But they do not guarantee that outcome. Following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799, the threshold is now relatively high. A property can still be “suitable for use as a dwelling” even if it is derelict in everyday language, unattractive to occupy, or in need of expensive works.

So the right question is not simply whether the bungalow was uninhabitable in a colloquial sense. The question is whether, at completion, its condition was so serious that it was not suitable for use as a dwelling for SDLT purposes. Structural instability, absence of essential services, and conditions making occupation unrealistic or unsafe may help. Estate agent wording alone is not enough. Independent evidence matters much more.

Third, consider the paddock. The existence of 2.7 acres of paddock land with separate access is potentially important. If the paddock was genuinely used for agricultural or other non-residential purposes and did not form part of the bungalow’s garden or grounds, the transaction may be mixed-use. If so, non-residential rates apply to the whole transaction.

Factors likely to matter include:

• whether the paddock is physically separated from the domestic curtilage;
• whether it has its own access;
• whether it has a history of agricultural, grazing or other non-domestic use;
• whether it is marketed and valued as land with an independent function rather than simply an unusually large garden; and
• whether, viewed objectively, it would ordinarily be regarded as grounds of the dwelling.

A paddock is not automatically non-residential. Some paddocks are still part of a house’s grounds. Equally, some are not. The answer depends on the facts and evidence.

Fourth, compare the two routes. In many cases, the mixed-use argument can be stronger than the “not suitable for use as a dwelling” argument, especially after Mudan, because the condition threshold for unsuitability is now demanding. If the land has a genuine non-residential character, that may be the cleaner route. But if the paddock is really just ancillary land enjoyed with the bungalow, mixed-use may fail.

Fifth, remember timing and evidence. SDLT is judged at the effective date of the transaction. Later works, later planning applications, or later demolition do not determine the position. The buyer needs evidence showing the factual position at completion, such as:

• survey reports;
• structural engineer reports;
• photographs;
• sales particulars;
• insurance and subsidence documentation;
• utility and service evidence;
• title plans; and
• evidence of the paddock’s actual use.

Outcome

The practical conclusion is that there are potentially two routes to non-residential SDLT rates in a case like this, but neither is automatic.

The argument that the bungalow was not suitable for use as a dwelling is possible, but the legal threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. Serious disrepair, vacancy and intended redevelopment are relevant, but they do not by themselves settle the issue.

The mixed-use argument may also be available if the paddock had a genuine non-residential character and was not part of the bungalow’s garden or grounds. Separate access and longstanding agricultural use may help, but again the point is fact-sensitive.

If neither argument succeeds, the purchase is likely to be treated as residential, and if it is an additional dwelling purchase the higher rates may apply unless the transaction qualifies as a replacement of a main residence.

Practical Steps

If you are assessing a similar purchase, the sensible next steps are:

1. Confirm whether the purchase is a replacement of your only or main residence for Schedule 4ZA purposes.
2. Obtain proper evidence of the building’s condition at completion, ideally including a surveyor’s or structural engineer’s report.
3. Gather documents showing missing services, structural problems, subsidence history and any safety concerns.
4. Review the title plan and sale documents to understand exactly what land is included.
5. Collect evidence of the paddock’s use, such as grazing arrangements, agricultural history, photographs and valuation comments.
6. Ask whether the paddock objectively functions as domestic grounds or as separate non-residential land.
7. Ensure the SDLT return is filed on the basis genuinely supported by the facts and evidence at completion.
8. Keep a full evidence file in case HMRC opens an enquiry within the normal enquiry window.

Where the filing position is not straightforward, the buyer should make sure their conveyancing solicitor understands the intended SDLT analysis and is given the supporting material in time before completion.

Conclusion

A derelict bungalow with paddock land may qualify for non-residential SDLT rates, either because the building was not suitable for use as a dwelling or because the transaction was mixed-use. But both arguments are fact-sensitive, and the “not suitable for use” route is now harder after Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. The correct answer depends on the condition of the property and the character of the land at the date of completion, supported by proper evidence.

Legal References Used

• Finance Act 2003, section 55
• Finance Act 2003, section 116
• Finance Act 2003, Schedule 4ZA
• P N Bewley Ltd v HMRC
• 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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