Do you pay SDLT on a building plot with planning permission but no house yet built?

Introduction

A common question in Stamp Duty Land Tax (SDLT) is whether a plot of land with planning permission should be treated as residential or non-residential. The answer matters because the SDLT rates are different, and in some cases the tax can be nil if the price falls below the non-residential threshold.

This issue often arises where land is being bought for development, especially where there is no completed dwelling on the site at the date of purchase. The fact that planning permission exists does not, by itself, settle the SDLT position. What matters is the legal classification of the land at the effective date of the transaction.

The Question

A buyer is purchasing a building plot for £136,000. The land has planning permission for houses, but no houses have yet been built. The land was previously used only for storage. The buyer wants to know whether SDLT is payable on the purchase, and if so whether the land should be taxed at residential or non-residential rates.

Nick’s Explanation

Nick’s key point was that the main issue is classification. In anonymised form, his view was:

“The main question is whether the land should be assessed as residential or non-residential depending on the circumstances. If the land was only used for storage and there was some kind of commercial arrangement for that use, it sounds like non-residential SDLT rates may apply, which at that price would mean no SDLT liability.”

That is the right starting point. SDLT on land is not determined simply by what the buyer intends to build later. It depends on what is being acquired at the time of completion and whether the land falls within the statutory definition of residential property.

The Law

The relevant rules are in the Finance Act 2003.

Under section 55, SDLT is charged by reference to the chargeable consideration and the type of property acquired.

Residential property is defined in section 116 Finance Act 2003. Broadly, it 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;
• land that forms part of the garden or grounds of such a building; and
• an interest in or right over land that subsists for the benefit of such a building or land.

Section 116 also provides that property is not residential if it is commercial property, and land is not automatically residential just because planning permission exists for residential development.

Where land does not fall within the statutory definition of residential property, it is treated as non-residential or mixed property for SDLT purposes.

For non-residential SDLT, the nil-rate band applies up to £150,000. On a purchase price of £136,000, that would normally produce no SDLT liability if the land is correctly classified as non-residential.

Where arguments arise about whether a building is suitable for use as a dwelling, the courts have taken a stricter approach in recent cases. In an uninhabitable or not suitable for use argument, the condition threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Analysis

The analysis usually works in four steps.

First, ask whether there is an existing dwelling on the land at the effective date of the transaction. If there is no house or flat in existence, that strongly points away from residential treatment under the ordinary dwelling limb of section 116.

Second, ask whether any building on the site is in the process of being constructed or adapted for use as a dwelling. If the site is simply a plot with planning permission, but no actual construction of a dwelling has begun, that usually points away from residential treatment on this basis as well.

Third, look at the actual character and use of the land at completion. If the land has been used for storage, yard space, or another non-residential purpose, that supports non-residential classification. The factual background matters. If there was a genuine commercial or storage use, that is more consistent with non-residential land than with residential property.

Fourth, separate planning status from SDLT status. Planning permission for houses may show future development potential, but it does not by itself turn bare land into residential property for SDLT. A development plot can still be non-residential land at the point of purchase.

On the facts described, the strongest view is that a bare building plot previously used for storage, with planning permission but no completed or partly constructed dwelling, is likely to be non-residential property for SDLT purposes.

If that classification is right, the SDLT calculation is straightforward. A non-residential purchase for £136,000 falls below the £150,000 nil-rate threshold, so the SDLT due would be £0.

The main caution is factual accuracy. If there is more on the land than first appears, such as an existing structure that could count as a dwelling, or works already underway that amount to construction of a dwelling, the answer may change. Equally, if the storage use was informal and the land is better characterised in some other way, the classification may need closer review.

Outcome

In a case where a buyer acquires a plot of land for £136,000, the land has planning permission for houses, no dwelling has yet been built, and the land was previously used only for storage, the likely SDLT treatment is non-residential.

If so, the SDLT payable would usually be £0 because the consideration is below the non-residential nil-rate threshold of £150,000.

Practical Steps

To assess the position properly, a buyer should:

• confirm exactly what existed on the land at completion;
• check whether any dwelling had actually been constructed or whether works had started;
• gather evidence of the previous use of the land, such as storage agreements, photographs, site history, planning papers, or correspondence;
• review the contract, transfer and title documents to see how the property is described;
• ensure the SDLT return reflects the correct classification of the land.

If there is any doubt about whether the site included a dwelling, or whether building works had advanced far enough to affect classification, the facts should be reviewed carefully before filing the SDLT return.

Conclusion

A plot with planning permission is not automatically residential for SDLT. If the purchase is of bare land, with no dwelling yet built and the land has been used for storage or another non-residential purpose, it will often be taxed as non-residential land. At a price of £136,000, that would normally mean no SDLT is payable.

Legal References Used

• Finance Act 2003, section 55
• 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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