Finding your local plan policies map and using it

The policies map is the drawing that shows where each planning policy applies, and it is the first thing to look at when you want to know what your council will say about a project. Search your council's website for "local plan policies map" and you will usually find either an interactive map or a set of PDF sheets with inset maps for each settlement. Type in the address, and the layers tell you whether the site is inside the settlement boundary, in the green belt, in a conservation area, on an allocated site or covered by a local designation.

One thing to know before you start. Since the 2012 local planning regulations, the policies map is not itself a development plan document. It illustrates the policies, and the wording of the policy is what actually applies. So the map tells you which policies to read, and then you read them.

Where the map sits in the plan

A local plan has three parts in practice: the written policies, the supporting text explaining them, and the policies map showing where each spatial policy bites. Section 38(6) of the Planning and Compulsory Purchase Act 2004 requires applications to be determined in accordance with the development plan unless material considerations indicate otherwise, so this is not background reading. It is the legal starting point for the decision on your application.

Most authorities now publish an interactive version where you can search an address and switch layers on and off. Some still publish only PDFs, in which case you need the key sheet first, then the inset covering your area. Older plans are the awkward ones, with scanned maps at scales that make precise boundaries hard to read. Where a boundary looks like it passes through your property, ask the council to confirm which side you are on rather than guessing from a screen.

Reading the layers

The designations that appear most often, and what each one usually means for a householder:

• settlement boundary or development limits, inside which residential development is acceptable in principle and outside which countryside policies apply
• green belt, where extensions are controlled by rules about proportionate additions and outbuildings are strictly limited
• conservation area, which narrows permitted development rights and brings a duty to preserve or enhance the character of the area
• site allocations, showing land earmarked for housing, employment or another use
• local green space, protected areas of open land, and areas designated for their landscape or wildlife value
• town centre and shopping frontage boundaries, which matter for changes of use
• flood zones, shown on some maps as an overlay and better checked on the Environment Agency's own flood map for planning

Each of those labels links to a numbered policy. Write the policy number down as you go, because the number is what the council's officer will quote back to you.

Settlement boundaries, and why they decide so much

For anyone building a new house outside a town or village, the settlement boundary is usually the single most important line on the map. Inside it, the principle of residential development is normally accepted and the argument is about design, access and amenity. Outside it, national and local policy restricts new isolated homes in the countryside, and the argument becomes whether an exception applies.

That is why land marketed as having "development potential" is worth checking against the map before any money changes hands. A paddock 30 metres beyond the boundary of a village is a different proposition from one inside it, and no amount of design quality bridges that gap on its own.

Green belt works differently again. The boundary is drawn on the policies map, and inside it the test for an extension to a house is whether the addition is proportionate to the size of the original building, which is a comparison with the house as it stood on 1 July 1948 or as first built after that date.

Saved policies and older plans

Many authorities are still working with a mixture of documents: a core strategy from one date, a site allocations plan from another, and a set of saved policies carried forward from a local plan of the 1990s or 2000s. The policies map has to be read across all of them.

If the council's map page lists more than one document, check which plan each layer belongs to. A saved policy from an old plan can still apply, and it can also carry less weight if it is inconsistent with current national policy. That is a judgement rather than a rule, and for a contested proposal it is worth asking the council's planning service directly which policies they consider up to date.

Whether the plan is up to date, and what happens if it is not

National guidance expects plan policies to be reviewed at least every five years and updated where necessary. Where the most important policies for an application are out of date, national policy applies a different balance, which can make permission more likely for some kinds of development.

Housing land supply is the other trigger, and the position changes over time as delivery moves. If your proposal depends on this argument, the figures and their status matter, and our note on finding housing land supply and delivery test figures explains where they are published.

For most householder work, none of this applies. An extension in a suburb is judged against design and amenity policies that are rarely out of date.

Neighbourhood plan layers

Where a parish or town has made a neighbourhood plan, its designations sit alongside the local plan and form part of the development plan too. Some councils show neighbourhood plan layers on the same interactive map, and some publish them separately on the parish council's website.

Check for both. A Local Green Space or a protected view in a neighbourhood plan can be the policy that decides an application, and it will not always appear on the borough or district map.

Citing a policy properly

When you write a covering letter or a Planning Statement for your application, cite policies the way the plan does. Give the policy reference, the name of the plan and the year it was adopted, then quote the part that matters in a sentence or two. "Policy DM12 of the district local plan, adopted 2019, permits extensions that respect the scale and character of the original dwelling" is useful. "The local plan supports good design" is not.

Illustrative example: a householder wants a two storey side extension. The map shows the property inside the settlement boundary, not in a conservation area, with a green infrastructure corridor along the rear boundary. Three policies apply: the general design policy, the specific householder extensions policy, and the corridor policy affecting the rear garden. The application addresses each in turn and the corridor policy shapes where the extension stops. Illustrative only.

Take a screenshot of the map with the address visible and the date, and keep it with your application papers. Boundaries change when plans are reviewed, and you may need to show what the position was when you applied.

This is general guidance rather than legal advice. Check the position with your local planning authority or a qualified professional before relying on it.

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