Overage, sometimes called clawback, is a contractual obligation requiring a buyer to pay the seller an additional sum if specified trigger events occur after the sale of property, typically the grant of planning permission. It bridges the gap between the current value of land and the uplift in value if development becomes possible. Without an overage clause, a seller who disposes of land at agricultural or existing use value receives nothing if the buyer subsequently obtains planning permission for a much more valuable use. With a well-drafted overage, the seller shares in that future value.
Key Points
- Overage is is triggered by defined events – most commonly the grant of planning permission for development.
- The seller receives a percentage of the uplift in value between the sale price and the value with the benefit of the trigger event.
- Overage runs for a fixed period – typically 20 to 25 years from the date of sale.
- The trigger, the percentage, the base value and the overage period are all negotiating points – sellers should start from the most favourable position.
- Overage must be properly registered at HM Land Registry and protected by deed of covenant to bind future owners.
- Poorly drafted overage provisions can be circumvented or lost entirely – the drafting is critical.
What is Overage and When does it apply?
Overage is used in land sales where the buyer and seller cannot agree on the full value of the land because its ultimate use, and therefore its ultimate value, is uncertain. The buyer pays today’s value now and commits to paying an additional sum if the land becomes more valuable in the future.
Overage is most commonly used in agricultural land sales near settlement boundaries, sales of brownfield or redundant commercial sites with development potential, greenfield land in areas of housing pressure and sales of land parcels with uncertain future use.
What Triggers an Overage Payment?
The trigger is the event that makes the overage payment due. The most common triggers are:
- Grant of planning permission: Overage payable when permission is granted. This is an early trigger but the payment may not reflect the land’s full realised value.
- Commencement of development: Payable when building actually starts. Protects against buyers who obtain permission but delay development.
- First sale of a completed unit: Payable when a residential unit is sold. Aligns payment with the buyer’s actual receipts but delays the seller’s return.
Sellers should prefer earlier triggers whilst Buyers prefer later ones. The trigger definition is one of the most important negotiating points in any overage agreement.
How Is the Overage Payment Calculated?
The overage amount is typically expressed as a percentage of the uplift in value – the difference between the value of the land with the benefit of the trigger event and its value without. The key variables are: the percentage (typically 20%–40%); the base value assumption; who conducts the valuation and on what basis; and how disputes about the calculation are resolved.
For example: land sold for £600,000.00. Planning permission granted. Land now valued at £2,400,000.00. Uplift: £1,800,000.00. At 30% overage the seller receives a further £540,000.00.
How Long Does Overage Last – and How Is It Enforced?
Overage runs for a fixed period from the date of sale – most commonly 20 to 25 years. The longer the period, the more valuable the provision for the seller. Sellers should push for the longest period commercially achievable.
To bind future owners, the overage obligation must be registered as a restriction at HM Land Registry and supported by a deed of covenant from any future buyer. Without this, the overage can be lost when the land is transferred. A restriction is the mechanism that ensures every future owner is notified of the obligation before any dealing with the land can proceed.
In practice – A landowner sold a field on the edge of a Cheshire market town. The overage had been agreed but the buyer’s solicitor had not registered a restriction at Land Registry. The buyer sold the land on within 18 months to a developer before planning. The original overage obligation was not in the new transfer. The original seller received nothing from the subsequent planning permission despite the land tripling in value.
If you are selling land with any development potential, get legal advice before agreeing heads of terms. The overage structure is far easier to negotiate before a price is agreed than after. Get in touch.
What should landowners negotiate?
- The overage percentage – aim for the upper end of the market range. Buyers will negotiate down.
- The base value assumption – the lower the base value, the larger the uplift and the more the seller receives.
- The overage period – the longer the better. Index the base value to inflation over a long period.
- The trigger definition – earlier is better for sellers. Define clearly which types of development trigger the clause.
- The enforcement mechanism – insist on a registered restriction and deed of covenant on any disposal.
- Multiple trigger events – overage should apply to each planning permission granted during the period, not just the first.
Frequently asked questions: Overage
An overage clause is a contractual provision in a land sale that requires the buyer to pay an additional sum to the seller if a specified trigger event occurs after completion – typically the grant of planning permission for development. It allows the seller to share in the future value uplift of land sold at current use value.
Overage is sometimes called clawback, uplift payment or overage payment. Whatever the terminology, the commercial purpose is the same: the seller retains a right to a share of the development value that was not priced into the original sale.
Overage agreements most commonly run for 20 to 25 years from the date of sale. The period is negotiable – sellers should push for the longest achievable period, as housing and development pressure can take many years to crystallise into actual planning permission.
An option gives the buyer the right to purchase land in the future at a pre-agreed price, usually contingent on planning. Overage applies after the sale has completed – the land has already transferred but the seller retains a right to further payment. Both share development value, but at different stages and in different ways.
Not if the overage is properly structured and registered. A registered restriction at HM Land Registry prevents the land being transferred without the seller’s (or their successor’s) consent. Combined with a deed of covenant, this binds every future owner. Poorly drafted or unregistered overage provisions are, however, vulnerable to being lost.
Overage payments received by the seller are generally subject to capital gains tax in the tax year they are received. Where payments are received across multiple years, the tax position can be complex. Specialist tax advice alongside legal advice is important for any overage arrangement.
Yes – overage is particularly common in agricultural land sales near settlement boundaries or in areas of housing pressure. Sellers of farmland with any development potential should always consider whether an overage provision is appropriate and how to structure it to maximise the return.
Agricultural land sales with overage provisions interact with a range of other considerations including capital gains tax treatment, the terms of any existing agricultural tenancy, and environmental and planning restrictions.
Overage Advice for Landowners Across England and Wales
NJB Legal is based in Winsford, Cheshire and I am a specialist overage solicitor advising landowners and sellers across Cheshire, the North West and England and Wales on overage agreements, option arrangements and land sales with development potential. Overage is a specialist area where the drafting matters enormously – the difference between a well-negotiated and a poorly negotiated clause can amount to a very significant sum of money.
If you are selling land with development potential, or being asked to accept an overage obligation, get in touch before agreeing terms.