Option Agreements for Landowners Explained

What is an option agreement?

An option is a contract in which you, the landowner, grant a buyer the right to purchase your land during a fixed period. You are bound to sell if the buyer serves notice in time; the buyer is not bound to buy. In return, the buyer pays a premium and takes on the cost and work of promoting the site through planning.

Options are common for land that needs time: sites outside current settlement boundaries, land being promoted through a local plan in England or a Local Development Plan in Wales, and larger strategic sites. They are less common for small sites where planning can be decided quickly; a conditional contract often suits those better.

What is the option premium?

The premium is the payment you receive for granting the option. It is usually paid on signing and is normally yours to keep whether or not the option is ever exercised. Whether it is deducted from the final purchase price is a point to negotiate.

The amount depends on the size of the site, the length of the option and how much the buyer expects to spend on planning. Some agreements also include further payments when the option period is extended or when planning milestones are reached, such as an allocation in the local plan or the submission of an application.

A larger premium is not always the better deal. A buyer that pays more upfront may ask for a bigger discount, wider deductible costs or a longer option period in return, so look at the premium alongside every other term rather than on its own.

How long does an option last?

The option period is the time the buyer has to obtain planning and serve notice to buy. For strategic land it is often five to ten years and sometimes longer; for smaller sites it may be much shorter. Many agreements extend the period automatically if an application or appeal is still being decided when it would otherwise end.

That is why a longstop date matters. It is the absolute end date, after which the option ends whatever extensions might otherwise apply. Without one, your land could be tied up indefinitely. The agreement should also say exactly how and when notice to buy must be served, so there is no argument later about whether the option was exercised in time.

How is the purchase price worked out?

Most options do not fix the price on day one. Instead they use a formula, typically:

the market value of the land with the benefit of the planning permission obtained, assessed when the option is exercised;
less a discount, an agreed percentage reflecting the buyer's risk and work;
less agreed deductible costs, such as planning fees, consultants and some infrastructure costs, usually capped;
subject to a minimum price, a floor below which the price cannot fall.

If you and the buyer cannot agree the market value, the agreement should say how it is decided, usually by an independent surveyor acting as an expert. The definition of market value, the assumptions the valuer must make and the list of deductible costs are where much of the money is won or lost.

Illustrative example only, using round made-up numbers that are not market values or typical terms: if the land with permission were valued at £1,000,000 and the agreed discount were 15%, the discounted figure would be £850,000. If £100,000 of capped planning costs were then deductible, the price would be £750,000, provided that was above the minimum price. If it fell below, the minimum price would apply instead.

What should you negotiate?

The size of the premium and whether it is deducted from the price.
The discount percentage.
A clear, capped list of deductible costs, with evidence required for each.
A realistic minimum price.
The option period, the events that extend it and a firm longstop date.
The buyer's obligations to pursue planning actively and keep you informed.
Your right to approve applications that affect any land you keep.
Whether the buyer can transfer the option to someone else.
What happens to reports and permissions if the option ends.
Overage if the buyer later obtains a better permission. See overage explained.

Also think about the land you keep. If you are selling only part of a holding, the option should deal with access, services and drainage for your retained land, and with how the new development will sit next to it. These points are much easier to agree at the start than at exercise, when the buyer has less reason to concede them.

Who pays the landowner's legal costs?

Option agreements are long and technical, and you need your own solicitor rather than relying on the buyer's. Buyers often contribute to the landowner's legal costs. When we take an option, we pay the landowner's reasonable legal costs, up to a cap agreed in the heads of terms, so you can take proper advice from your own solicitor.

You should also take advice from your own land agent or surveyor on the commercial terms, and from a tax adviser, because the premium and the eventual sale can each have tax consequences.

How is an option registered, and what changes in 2027?

A buyer will usually protect its option by entering a notice on your title at HM Land Registry, so that anyone who buys the land later takes it subject to the option. The agreement should require the buyer to remove that entry if the option ends.

A new transparency regime also applies across England and Wales. Under the Provision of Information (Contractual Control) (Registered Land) Regulations 2026, buyers holding options, conditional contracts and similar rights over registered land will have to report details to HM Land Registry from 6 April 2027, including rights granted on or after 8 June 2026. The duty falls on the buyer, but you may be asked for information about yourself before exchange.

What are the downsides for a landowner?

An option ties your land up for years with no guarantee of a sale. During that time you usually cannot sell to anyone else, and you may be restricted from granting new leases or rights over the land. If planning fails, the option may simply expire. The final price is uncertain because it depends on a future valuation, and markets can move a long way over a five or ten-year period.

You will also need to cooperate with the buyer's planning work, for example by allowing access for surveys and signing planning documents where the agreement requires it. If you die during the option period, it will normally bind your personal representatives, so it is worth discussing with your family and your solicitor before you sign.

Against that, the buyer pays the planning costs up front (some may be deducted from the price under the agreement, usually capped), you normally receive a premium, and if permission is granted you share in the uplift by selling at market value less the agreed discount. You can compare this with the other routes on our option agreements page.

Questions

Do I have to repay the premium if the developer does not buy?

Normally not. The premium is the price of granting the option and is usually yours to keep whether or not the option is exercised. Check the agreement, though, because some deals deduct the premium from the final purchase price if the land is bought.

Can I sell my land to someone else during the option period?

Usually not without the option holder's agreement. The option is normally protected on your title, so any buyer would take the land subject to it. Some agreements allow sales of small parcels or of land outside the option area, but this needs to be agreed at the outset.

What is a minimum price in an option agreement?

It is a floor below which the purchase price cannot fall, whatever the market valuation and deductions produce. It protects you if values fall or deductible costs turn out higher than expected. Buyers will want it set at a level that keeps the scheme viable, so it is a matter for negotiation.

Is an option the same as a promotion agreement?

No. Under an option, the developer has the right to buy your land itself. Under a promotion agreement, a promoter seeks planning and then sells the land on the open market, with the proceeds shared after its costs are repaid. Each carries different risks, so take advice before choosing.

Sources

This guide is general information, not legal, planning or tax advice. Always take independent professional advice on your own circumstances.

Option agreements explained: a guide for landowners