ARTICLE
30 April 2025

What Is An Overage Agreement?

HC
Herrington Carmichael

Contributor

Herrington Carmichael is a full-service law firm offering legal advice to UK and international businesses. We work with corporate entities of all sizes from large PLCs through to start-up businesses.
Overage agreements continue to play a pivotal role in property transactions, and their popularity is showing no signs of waning.
United Kingdom Real Estate and Construction

Overage agreements continue to play a pivotal role in property transactions, and their popularity is showing no signs of waning. For landowners, overage arrangements represent a unique opportunity to secure additional financial returns long after their land or property has been sold. But what exactly is overage, and how can landowners maximise their benefits while avoiding potential pitfalls?

What is Overage?

Overage, often referred to as "clawback," is a financial mechanism that allows landowners to claim additional payments after the sale of their property or land, contingent upon certain future events. These events might include:

  • The grant of a planning permission for development or change of use.
  • The approval or implementation of additional planning permissions.
  • The property or its individual plots achieving sales proceeds above a pre-agreed threshold.
  • The buyer resells the property at a higher price within a specified timeframe.
  • The buyer discovers and exploits valuable minerals or resources from the land.
  • Specific milestones being reached in respect of the construction/completion of units on the development.

It is important to distinguish overage from deferred payments. While deferred payments are unconditional obligations to pay sums at a future date, overage payments are conditional, hinging on whether specific triggers occur within the agreed timeline.

Advantages of Overage for Landowners

The appeal of overage lies in its potential to ensure landowners benefit from the success of future developments. Notable advantages include:

  1. Revenue Sharing: Landowners can share in any increase in land value resulting from future planning permissions or higher-than-anticipated sales.
  2. Protection Against Undervalued Sales: Overage prevents scenarios where developers seek reduced planning permissions initially to secure a lower purchase price, only to later enhance consents after the sale is completed.

Challenges and Risks for Landowners

While overage agreements can be financially rewarding, they also come with challenges, particularly in a property market facing ongoing uncertainties:

  • Lower Initial Purchase Price: Developers may offset the potential overage payment by reducing the upfront purchase price.
  • Delayed Payments: Overage payments may not materialise for several years.
  • No Guaranteed Returns: As overage is conditional, landowners must accept the possibility of not receiving additional payments if the agreed triggers are not met within the designated period.
  • Ongoing Administrative Burden: Landowners may need to monitor the Developer's activities to track when and if the overage payments are triggered.

Drafting an Effective Overage Agreement

Given the complexities of modern property transactions, especially in the current regulatory and economic environment, a well-drafted overage agreement is critical. The key features of an overage agreement are:

  • Duration: Overage clauses often specify a time limit (e.g., 5, 10, or 20 years).
  • Trigger Events: The specific conditions that trigger overage payments are clearly defined in the agreement.
  • Calculation Method: The agreement sets out how the additional payment is calculated (e.g., a fixed amount, percentage of uplift, or share of profits).
  • Security: Sellers often include mechanisms to secure overage payments, such as charges on the land or restrictions on title.

Drafting must account for various potential future scenarios, ensuring the agreement reflects the true intentions of all parties and protects the landowner's right to payment under specified conditions.

Several high-profile court cases in recent years have underscored the importance of precise drafting in overage agreements. Poorly drafted agreements can lead to disputes, delayed payments, or outright loss of entitlement. For example, ambiguities around the definition of "trigger events" or the duration of the overage period have caused significant legal disputes.

Tax Implications

Taxation remains a key consideration for landowners entering into overage agreements. In the UK, payments received under overage agreements may have tax consequences, including future liability for Capital Gains Tax or VAT.

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

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