Development plan: what it means in planning

The development plan is the set of documents a council has formally adopted that decide, in law, how planning applications in its area are determined. Section 38(6) of the Planning and Compulsory Purchase Act 2004 says a determination must be made in accordance with the development plan unless material considerations indicate otherwise. That single sentence is the backbone of the English system. It is why an officer's report always starts with the plan, why objectors are told their point "is not a planning matter", and why the National Planning Policy Framework, for all its weight, does not sit at the top of the pile.

What the plan is actually made of

For most of England the development plan is the adopted local plan for the area, plus any neighbourhood plan that has passed its referendum and been made, plus any minerals and waste plan produced by the county or unitary authority. In Greater London it also includes the Mayor's spatial development strategy, the London Plan.

Older documents can still be in there. Where a council has only partly replaced an old local plan, individual saved policies from the previous document continue to form part of the plan until they are superseded. A council's policies map will show which of them still bite on a given site.

Section 38(5) deals with the awkward case of two plan policies pointing in opposite directions. The policy in the document adopted most recently prevails. In practice that comes up when a neighbourhood plan made in, say, 2023 conflicts with a local plan adopted in 2019.

Settlement boundaries are usually the part of the plan a householder meets first, and our note on settlement boundaries explains how the line on the map converts into policy.

What section 38(6) actually requires

The wording is often quoted as though it means the plan always wins. It does not. The duty is to determine in accordance with the plan unless material considerations indicate otherwise, which sets up a two-stage exercise.

The officer first reads the proposal against the plan as a whole and reaches a view on whether it accords with it. A scheme can conflict with one policy and still accord with the plan overall, and the courts have been clear that the judgement is about the plan taken together rather than a policy-by-policy tally. Then the officer asks whether anything else material points the other way strongly enough to displace that starting point.

Section 70(2) of the Town and Country Planning Act 1990 supplies the second half of the machinery. It requires the authority to have regard to the provisions of the development plan so far as material, to local finance considerations, and to any other material considerations.

What is not part of the development plan

This is where most confusion starts. The National Planning Policy Framework is national policy, not plan policy. It is a material consideration, usually a heavy one, but a proposal that conflicts with the adopted plan is not rescued simply by fitting the Framework.

Supplementary planning documents sit outside the plan too. A householder design guide, a parking standards document or a developer contributions SPD can carry real weight as a material consideration, and an officer will apply it, but it cannot contradict the plan it supplements. The distinction matters when you want to argue that an SPD has gone further than the policy it claims to explain, and we set out how that argument runs in the piece on supplementary planning documents.

Also outside: written ministerial statements, appeal decisions, emerging plans that have not been adopted, and the council's own committee minutes. All can be material. None is the plan. The weight given to ministerial statements is a good example of a document that changes decisions without ever becoming plan policy.

The Levelling-up and Regeneration Act 2023 created a power to designate National Development Management Policies, which would sit alongside the development plan and prevail where the two conflict. Those policies come from government rather than from your council, so check the current position before relying on any statement about how they interact with a local plan.

How an officer applies it in a real report

Open any delegated officer report and the structure is the same. A list of the relevant plan policies by number. A paragraph on whether the proposal accords with each. A section on material considerations, usually covering national policy, neighbour representations, highway advice and any site constraints. Then a planning balance and a recommendation.

If you are commenting on an application, that structure tells you what to write. Quote the policy number. Say why the scheme fails it. Objections framed around loss of a view, property values or the identity of the applicant get recorded and then set aside, because none of them is a material planning consideration.

An illustrative example of the balance

Take an illustrative case. A parish has a made neighbourhood plan with a policy resisting housing outside the settlement boundary, and the district's local plan allocates nothing on the site. An applicant proposes six homes on a paddock 40m beyond the boundary.

The starting point is conflict with the plan, so the application should be refused unless material considerations indicate otherwise. The applicant argues that the council cannot demonstrate a five-year supply of deliverable housing sites, which engages national policy on the weight to be given to out-of-date housing policies. The council's own published position on supply then becomes the hinge of the decision, and both sides argue about the figures rather than about the paddock.

That is a fair picture of how these cases actually run. The plan sets the default and the argument is about what displaces it.

Where the term is misunderstood

People often use "development plan" to mean a drawing of the proposed development. In planning terms it never means that. The drawings are the proposed site plan, block plan or floor plans, and they are not policy.

A second confusion is between a plan being adopted and a plan being up to date. A local plan adopted in 2014 is still the development plan in 2026. Its housing policies may carry reduced weight because they are out of date, but its designations, boundaries and site allocations remain the plan until the council replaces them.

And a neighbourhood plan is not advisory. Once made, it is part of the development plan with the same statutory status as the local plan, which surprises applicants who assumed the parish council was only being consulted. Whether one covers your site is worth checking before you design anything, and our guide on finding a neighbourhood plan shows where to look.

Checking the plan that applies to your site

The sequence is short and worth doing before you spend money on drawings.

1. Find the council's planning policy page and identify the adopted local plan, its adoption date, and any saved policies from an earlier plan.
2. Open the policies map and locate your site. Note every designation touching it, including boundaries, conservation areas, Green Belt, allocations and local wildlife sites.
3. Search the parish or town council for a made neighbourhood plan and check its policies map too.
4. List the supplementary planning documents the council cites for your type of development.
5. Write down the policy numbers you will have to answer. That list becomes the spine of your planning statement.

A planning statement that walks through those policies one by one is what most councils expect on anything beyond a small householder application. You can see what such a document contains, and which other reports usually sit alongside it, on the report types index.

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