We spoke with Anastasiya Kokonova, Capital Allowances Partner at RCK Partners, to break down how contaminated land remediation relief works in practice, including which remediation costs can qualify, how asbestos and brownfield claims are treated, and the interaction between land remediation relief and capital allowances.
1. What qualifies under HMRC land remediation relief?
Land Remediation Relief (LRR) is a corporation tax relief available to companies that incur costs cleaning up contaminated land or buildings in the UK. The relief is designed to encourage redevelopment of brownfield and previously developed sites.
To qualify, the contamination must have been present when the property was acquired and must not have been caused by the claimant company or a connected party. Typical qualifying contaminants include asbestos, hydrocarbons, heavy metals, Japanese Knotweed, radon gas and contaminated groundwater.
Qualifying companies can claim an enhanced deduction of 150% of qualifying remediation expenditure against taxable profits, making land remediation relief a highly valuable tax incentive for companies undertaking remediation works.
2. How do I calculate land remediation relief?
Land remediation relief generally provides an enhanced tax deduction equal to 150% of qualifying remediation expenditure.
For example, if an investment company incurs £200,000 on qualifying contaminated land remediation relief works, including land remediation relief asbestos costs, the company may obtain a total tax deduction of £300,000.
At a 25% corporation tax rate, this could generate corporation tax savings of up to £75,000.
Correct identification of qualifying remediation expenditure is critical, as general site preparation, foundations and standard demolition works will not automatically qualify.
3. Can you claim land remediation relief on asbestos removal costs?
Yes. Land remediation relief asbestos claims are one of the most common qualifying areas under the legislation.
Where asbestos contamination existed prior to acquisition and the claimant company was not responsible for causing the contamination, costs associated with identifying, removing and safely disposing of asbestos-containing materials can qualify for relief.
This may include:
Asbestos remediation claims are particularly common on older industrial, agricultural and commercial redevelopment projects.
4. What remediation costs qualify for contaminated land remediation relief?
Contaminated land remediation relief can apply to a wide range of qualifying remediation activities, including:
The relief applies where the works are required to remove or mitigate risks to human health or the environment.
However, there are detailed legislative conditions and exclusions, meaning careful review of contractor invoices, environmental reports and remediation strategies is often required.
5. Who can claim land remediation relief, developers, investors, or property owners?
Land remediation relief is available only to companies within the charge to UK corporation tax.
This means property developers, investors, trading companies and commercial property owners may all potentially qualify, provided the company owns or has a major interest in the contaminated land and meets the acquisition conditions.
Property developers commonly claim the additional 50% enhancement against trading profits, while investment companies holding contaminated property/ land may also benefit from the enhanced 150% relief against qualifying taxable income streams.
6. What are the most commonly missed land remediation relief claims?
Many companies fail to identify qualifying remediation costs hidden within wider construction or redevelopment expenditure.
Commonly missed claims include:
Without specialist review, substantial qualifying expenditure is often overlooked.
7. Can loss-making companies receive a cash credit under land remediation relief?
Yes, one of the key benefits of land remediation relief is that loss-making companies may be able to surrender the enhanced loss for a payable tax credit.
Currently, the payable credit is broadly worth up to 16% of the qualifying enhancement, providing valuable cash flow support for remediation-heavy or early-stage development projects.
This makes contaminated land remediation relief particularly valuable for developers regenerating challenging brownfield sites.
8. How does land remediation relief interact with capital allowances?
Land remediation relief and capital allowances often apply alongside each other on redevelopment projects.
Broadly:
Careful cost allocation is therefore essential to maximise overall tax relief while avoiding double claims on the same expenditure.
An integrated review of remediation costs and capital allowances can significantly improve the overall tax position of a project.
9. Can property developers claim land remediation relief on brownfield sites?
Yes, brownfield redevelopment projects are one of the main areas where land remediation relief is commonly available.
Many brownfield sites contain historic industrial contamination, asbestos, hydrocarbons or invasive plant contamination that require remediation before redevelopment can proceed.
Provided the developer did not cause the contamination and all qualifying conditions are met, substantial tax relief may be available on remediation expenditure.
10. Who are the best land remediation relief consultants and what should businesses look for?
The best land remediation relief consultants combine tax expertise with practical understanding of construction, environmental remediation and property development.
Businesses should look for advisers with:
Given the complexity of contaminated land remediation relief legislation, specialist review is often essential to maximise claims while ensuring full compliance with HMRC requirements. At RCK Partners, our experts have both the technical expertise and the understanding of HMRC language required for successful claims.
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