Grampian conditions or negative obligations: which secures it

A Grampian condition is a negatively worded planning condition preventing development, or occupation, until specified works have been carried out, typically works outside the application site. A negatively worded planning obligation under section 106 of the Town and Country Planning Act 1990 can achieve a similar result by binding land in which a party has an interest. The choice between them usually turns on one question: does anyone party to the deal control the land where the works have to happen. If not, the condition is generally the only workable route, and its validity depends on there being a realistic prospect of the works being delivered.

Planning Practice Guidance is clear that conditions should be preferred where they can address the impact, and obligations used where they cannot. Councils do not always apply that order.

What a Grampian condition does

The name comes from the House of Lords decision in the Grampian case, which established that a negatively worded condition preventing development until off-site works are completed can be a lawful way of dealing with an impact the applicant cannot deliver unilaterally.

The mechanism is indirect and that is the point. The condition does not require the applicant to do anything on land they do not control. It simply says the development cannot proceed until the thing has happened. Whether it happens, and who makes it happen, is left open.

Typical uses: a junction improvement in the highway, a sewer connection, a footway link across third party land, the closure of an existing access, the provision of visibility splays outside the red line.

When a condition cannot secure off-site works

Two limits matter.

The first is deliverability. Later case law established that a Grampian condition should not be imposed where there is no reasonable prospect of the action being carried out within the lifetime of the permission. The test is deliberately generous to applicants, because it asks whether there are no prospects at all rather than whether success is likely, but it is not a formality. Where a scheme depends on a landowner who has said no in writing, expect the point to be taken.

The second is what a condition can do at all. A condition cannot require a payment, cannot require the transfer of land, and cannot impose an obligation on a third party. Anything involving money, phased contributions, ongoing management or the transfer of an interest in land needs an agreement.

That divide explains most of the cases where both mechanisms are used on the same permission: a condition for the physical works, an agreement for the money and the management.

The tests each mechanism must meet

The six tests for conditions are set out in national policy and guidance, and the obligation tests appear in the Community Infrastructure Levy Regulations 2010. They are different tests, so a requirement that fails as a condition does not automatically succeed as an obligation.

Precision is the test conditions most often fail. "Until suitable highway improvements have been provided" is not precise, because nobody can say when it has been complied with. Name the works, reference a drawing, and state who has to approve them.

Prospects of delivery and reasonableness

Evidence carries this argument. Where a Grampian condition is proposed, put the material in front of the officer before the decision:

1. Confirmation from the highway authority or other body that the works are acceptable in principle.
2. A drawing of the works, even at general arrangement level.
3. Correspondence showing the landowner's position, or an option or agreement in principle.
4. A realistic programme showing delivery inside the permission's life.

Where the prospects are seriously uncertain, an applicant is sometimes better off accepting the risk openly. A condition that is later found unlawful because the works were never deliverable leaves a permission that cannot be implemented, which is worse than a refusal you could have appealed.

Third party land and consent

A section 106 obligation binds land, and it binds only the land of a party who has an interest and who enters into it. So securing works on a neighbour's land through an agreement means persuading the neighbour to sign, along with their mortgagee.

That is often impossible, which is exactly why Grampian conditions exist. But note the asymmetry. The condition does not give the applicant any right to go onto the land. It simply blocks the development until the works happen, leaving the applicant to negotiate the access, the licence or the easement separately.

Where the works are in the public highway, a section 278 agreement with the highway authority is the delivery mechanism, and the planning condition or obligation is the thing that requires it. Those are two different documents doing two different jobs, and applicants sometimes assume the planning condition does both. It does not, and the wider construction and traffic arrangements sit in a third place again.

Which route a council prefers

Officers often default to a section 106 agreement because it is familiar, because their legal team is comfortable with it, and because it can carry a monitoring fee. Guidance points the other way, so it is legitimate to argue for a condition where one will do the job.

The argument to make, in writing, at the right moment:

• Identify the impact and the mitigation precisely.
• Show that a negatively worded condition can secure it, with draft wording attached.
• Demonstrate that the condition meets all six tests, taking them one by one.
• Note that guidance expects conditions to be preferred where they can address the impact.
• Offer the agreement route as a fallback for anything that requires it, such as payments.

Attaching draft wording is what moves this. An officer choosing between writing a condition themselves and instructing a solicitor will usually take the drafted condition, provided it is precise and enforceable.

One honest caveat. On a scheme that already needs an agreement for affordable housing or contributions, arguing about whether one further item goes in the condition or the deed rarely saves anything. Save the argument for the schemes where an agreement would otherwise not be needed at all, because there the difference is weeks of legal time and several thousand pounds.

For the supporting documents that evidence the off-site works, browse the report types, and enter your postcode on PlanScope to see which a constrained site is likely to need.

PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval. This is general guidance, not legal advice; check the position with your local planning authority or a qualified professional before relying on it.