Can You Claim Capital Gains Tax Relief on Selling Your Garden?

Private Residence Relief (commonly referred to as PRR or PPR) is a widely known tax break that shields many homeowners from capital gains tax (CGT) when they sell their only or main residence. However, the legislation is complex, and certain cases — particularly involving gardens or grounds — are often misunderstood.

If you’re considering selling part of your property’s land, whether for profit or to a developer. It’s essential to understand the specific conditions under which PRR may or may not apply. A recent case, Nunn v HMRC [2024]. Sheds light on this and offers key insights for homeowners navigating the sale of garden land.

PRR Basics: Beyond Just the House

When most people think of PRR, they think of it applying to the house they live in. But the relief can also extend to the garden or grounds that accompany the property. Provided the land is for the owner’s own occupation and enjoyment.

This is backed by the legislation in TCGA 1992, s 222(1)(b), which states that PRR may apply to:

“land which [the individual] has for his own occupation and enjoyment with that residence as its garden or grounds, up to the permitted area.”

So, in principle, if you sell part of your garden along with your home — or shortly before — that portion of land could also qualify for CGT relief.

But, as is often the case in tax, timing and intention matter greatly.

Timing Is Everything: The Case of Varty v Lynes

In Varty v Lynes [1976], the High Court dealt with the issue of selling the garden after the main residence. The taxpayer sold his house and part of the garden in 1971, but retained the remaining land until 1972. When he sold it separately.

The court held that the second sale — of the remaining garden — did not qualify for PRR, because it no longer formed part of the residence at the time of disposal. This case confirms that PRR generally only applies to land disposed of with or before the sale of the home, not afterwards.

Practical point: If you are planning to sell your home and garden in parts, it’s typically more tax-efficient to sell the land first or together with the home, not after.

Development Complicates Things: Trading Stock and Tax Implications

The position becomes even more complex when the garden is being sold for development purposes — especially if work begins before the sale is legally finalised.

If development work is started early, HMRC may argue that the land has become trading stock — and thus any gains could be taxed as trading income, not capital gains. This typically has worse tax outcomes.

That’s what happened in the Nunn case, which provides an important precedent.

The Nunn Case: When Selling a Garden Becomes a Trade

In Nunn v HMRC [2024] UKFTT 298 (TC), the taxpayer agreed in 2015 to sell part of his garden to a property developer for £295,000. Planning permission was granted in April 2015, and although no formal contracts had been signed by June 2016. Construction work began after the taxpayer signed a letter acknowledging agreed terms.

By the time the sale was completed in September 2016, development of the land was well underway — including the erection of a fence and commencement of building work.

HMRC refused PRR, arguing that the taxpayer had effectively commenced a trade by allowing work to start. Thus converting the garden to trading stock.

However, the First-tier Tribunal (FTT) disagreed — but only in part.

The tribunal concluded that:

• The 2 June 2016 letter was not a legal disposal of the land, but…
• The taxpayer had, by allowing development, embarked on an “adventure in the nature of trade”.
• This amounted to an appropriation to trading stock — a tax-triggering event.
• PRR was still available at that point, because the land was still used for the owner’s enjoyment and formed part of the garden on that date.

So while the final sale was trading income, the appropriation (in June 2016) created a disposal event that qualified for CGT relief under PRR.

Key Lessons for Homeowners

This case teaches us several important things:

1. PRR Can Apply to Land — But Only If It’s Still Part of the Home

If you sell the land after you’ve sold the house, PRR is unlikely to apply. But if the garden or grounds are still clearly linked to your home at the time of sale (or appropriation to trading stock), relief may be available.

2. Letting Development Begin Early Could Trigger a “Trade”

By permitting a developer to start work before the sale is complete, you risk reclassifying the transaction as a trade. If so, you may lose access to CGT relief entirely — unless you can show the trade began while the land still qualified as your private garden.

3. PRR Can Apply on Appropriation to Trading Stock

If your land becomes trading stock — intentionally or otherwise — the date that happens is treated as a deemed disposal for tax purposes. If you still occupy the home and the land is still your garden, PRR may be available at that point. As it was in Nunn.

4. You Don’t Need to Do the Development Yourself

Importantly, the tribunal in Nunn confirmed that a taxpayer does not need to personally carry out development for a trade to exist. Simply facilitating or allowing development may be enough to trigger tax consequences.

Practical Tip

If you’re approached by a developer about buying part of your garden, take the following steps before agreeing anything:

• Get advice early — don’t sign letters of intent or allow access without tax input.
• Keep the land clearly part of your home — avoid fencing it off or changing access before contracts are finalised.
• Consider the timing of any disposal — a sale before or alongside the main residence is better than one after.
• Beware of triggering a trade inadvertently — if development starts before contracts are signed, you may be deemed to have begun a business activity.

Final Word: Relief Is Possible — But Only If You Plan Ahead

Selling your garden, especially for development, can trigger unexpected tax liabilities. But with careful planning, Private Residence Relief may still be available. Even if you allow early access or development starts before a formal contract is in place.

At Merranti, we regularly help clients review land sales, garden disposals, and potential developments from both a tax and strategic perspective. We can guide you through the process to maximise tax relief, minimise risk, and ensure you meet your obligations with confidence.

Thinking of selling part of your garden or negotiating with a developer? Let’s talk before you sign.