Promotion agreement or option agreement? A landowner's plain-English guide

Sooner or later, land that might one day carry houses attracts a letter. It comes from a developer or a promoter, it is friendly, and it asks you to sign one of two kinds of agreement. The choice between them is the single most consequential decision you will make about your land before any spade goes in the ground, and it is also the one most owners understand least when they sign. This is a plain-English guide to the two, written to help you ask the right questions rather than to tell you what to choose. Every site is different and the tax position is specialist. None of this is a substitute for your own solicitor and land agent.

Set the legal jargon aside for a moment, because the whole thing turns on one question: at the end of the process, who ends up owning your land, and how is everyone paid? Get that clear and the rest follows.

The option agreement

Under an option agreement, you grant a developer the right to buy your land, usually within a set period and once planning permission has been secured. The developer takes on the cost and the effort of promoting the site through the planning system. If permission comes, they can exercise the option and buy the land from you. If it does not, the option lapses and you keep your land, generally the poorer only by the time that has passed.

The critical feature is the price. As firms including Michelmores and Birketts set out clearly in their guidance for landowners, the purchase price under an option is typically fixed by a formula agreed at the outset, very often as a percentage of the market value of the consented land, with a deduction to reflect the developer’s costs and profit. In other words, the developer buys at a discount to open market value. That discount is the developer’s reward for carrying the planning risk and the promotion cost, and it is entirely legitimate. But it has a consequence worth naming plainly: at the point of sale, the developer is both the promoter and the buyer, and as the buyer its interest is in a lower price, not a higher one. Your interests and theirs are not pulling in quite the same direction on the number that matters most to you.

That is not a reason to dismiss options. As Vail Williams and Howes Percival both note, an option can suit some owners and some sites very well. You deal with a single counterparty who intends to build, which can mean certainty and a clean exit. If a particular housebuilder wants your land for a specific scheme, an option is often the natural structure. Some owners prefer a known buyer and a defined process to the openness of a sale down the line. If certainty matters to you more than squeezing the last pound out of the price, an option may be the right home for your land.

The promotion agreement

A promotion agreement works from a different starting point. Here the promoter is not buying your land. They fund and manage the planning process just as under an option, but when permission is granted the consented land is sold on the open market, usually to the housebuilder willing to pay the most. The promoter is paid out of the sale proceeds, typically as an agreed percentage of the price achieved, and often with their promotion costs deducted first.

The structural point, which Approved Planning and Michelmores both draw out, is that this arrangement lines the promoter up alongside you. Because the promoter is paid a share of the sale price rather than buying the land themselves, both of you want the same thing: the highest open market value the consented site can command. When the promoter argues for one more house on the layout or a better mix, they are arguing for your return as much as their own. That alignment is the reason promotion agreements have grown in popularity with landowners, and it is the honest heart of the case for them.

There are things to weigh on the other side. You are exposed to what the open market will actually pay on the day, which is a strength when demand is strong and a risk when it is soft. The percentage the promoter takes, the treatment of costs, minimum land values, longstop dates and the promoter’s duties to market the land properly all matter enormously, and a good agreement pins them down. The alignment of interest is real, but it lives or dies in the drafting.

Reading the two side by side

Strip it back and the comparison rests on four questions. Who controls the planning process? In both cases the developer or promoter does the work and carries the cost, so on this the two are more alike than different. Who carries the planning risk? Again, both structures place it largely with the developer or promoter, which is much of their value to you. Who ends up buying the land? Under an option, the developer itself; under a promotion agreement, whoever the open market throws up. And how do the incentives line up on price? This is where they part company: an option gives the buyer a reason to want a lower figure, while a promotion agreement gives the promoter a reason to want a higher one.

The world is not as tidy as two boxes, though. Hybrid structures exist, blending features of both, and bespoke arrangements are drawn up all the time to fit an unusual site or a particular owner’s needs, a phased delivery among them. Some deals sit deliberately between the two. What does not change is the discipline of asking the four questions above of whatever is put in front of you, and reading the answers against your own priorities rather than the letter’s warmth.

Before any of that, though, it helps to know what you are actually holding. A clear read of your land’s planning position, the constraints on it and whether it is realistically promotable, is the sensible first step before you weigh any agreement at all. Our free Land Potential Check gives you that starting picture from open data. It will not tell you which agreement to sign. But it will mean that when the letter arrives, you are the one asking the questions.