What Is a Subject to Planning Offer and Should You Accept One?

If you own land, a large garden, a bungalow on a generous plot, or a property with development potential, you may be approached by a developer with an offer that is “subject to planning.” At first glance, this can sound attractive, but it is important to understand what it really means before agreeing anything.

What Does Subject to Planning Mean?

A subject to planning offer usually means a developer is interested in buying your land, but only if planning permission is granted for their proposed scheme.

In simple terms, the developer is not making an unconditional commitment to buy immediately. Their purchase depends on achieving a planning outcome that makes the site viable for them.

This can be a sensible structure in some situations, but the details matter.

Why Developers Use Subject to Planning Offers

Planning risk is one of the biggest uncertainties in land development.

A developer may believe your land has potential, but until permission is granted, they cannot be certain what can actually be built. A subject to planning offer allows them to explore that potential before fully committing to the purchase.

This can help a deal move forward where a developer is interested but not yet ready to buy unconditionally.

Why Landowners May Consider This Route

For landowners, a subject to planning offer can feel appealing because it may create a route to a higher land value than selling without planning interest.

It can also mean the developer takes responsibility for progressing the planning application, often at their own cost, depending on the terms agreed.

However, it is not the same as a completed sale. Until the planning position is resolved and legal conditions are satisfied, there is still uncertainty.

The Main Risks to Understand

Before accepting a subject to planning offer, landowners should understand the possible risks.

• The planning process may take longer than expected
• Permission may be refused
• The developer may seek to renegotiate if costs or market conditions change
• The land may be tied up for a period of time
• The final price may depend on the planning outcome achieved

None of these points mean the structure is wrong. They simply mean the agreement needs to be clear from the start.

Price Is Only One Part of the Offer

Landowners naturally focus on the headline price, but the terms are just as important.

You should understand how long the developer has to seek planning permission, what happens if planning is refused, who controls the application, whether the price can change, and when the developer is required to complete the purchase.

A strong offer with weak terms may not be as attractive as it first appears.

Why Independent Advice Matters

If you receive a subject to planning offer, it is sensible to take independent advice before agreeing anything.

A land agent can help you understand whether the offer reflects genuine market value and whether other developers may also be interested. A solicitor can advise on the legal agreement, obligations, timings, and protections.

This is especially important where the land forms part of your home or where you are being asked to commit to a lengthy agreement.

Should You Accept a Subject to Planning Offer?

Sometimes, yes. A subject to planning offer can be a practical route where a site has potential but planning permission is not yet in place.

However, it should not be accepted simply because it is the first approach or because the headline number sounds attractive.

The right decision depends on the land, the developer, the proposed terms, the level of planning risk, and whether there may be other routes to a better outcome.

The Bottom Line

A subject to planning offer can be useful, but it needs to be understood properly. It is not just about the proposed price. It is about control, timing, risk, and the strength of the agreement.

For Hemel Hempstead landowners, the safest approach is to take advice early, compare options, and avoid committing before the full implications are clear.

At David Doyle, our Land and New Homes team can help landowners understand developer approaches, assess whether an offer is realistic, and consider whether a wider or more structured route may deliver a better result.