Checking National Park and National Landscape boundaries

Every National Park and National Landscape boundary in England is published as an official dataset, and a national landscape boundary check takes about two minutes once you know where to look. The boundaries sit on the MAGIC map run by Defra and on planning.data.gov.uk, and both show the line drawn on the designation order rather than a parish or ward approximation. That distinction matters, because designation boundaries follow field edges, watercourses and historic property lines, and a single holding can sit half in and half out.

Where the boundaries are published

MAGIC is the working tool. Turn on the designations layer group, then the National Parks and Areas of Outstanding Natural Beauty layers, and zoom to the holding. The planning.data.gov.uk service publishes the same designations as structured datasets with the designation order reference attached, which is the version to quote in an application.

Two naming points cause confusion. Areas of Outstanding Natural Beauty were rebranded as National Landscapes in 2023, and the statutory term in the Countryside and Rights of Way Act 2000 is still Area of Outstanding Natural Beauty. Use the current name in the text and the statutory term when you cite the legislation. The Broads has its own authority under its own Act and is treated as having National Park status.

If the line runs through the site, screenshot the mapping at a scale where the boundary is unambiguous and put a figure in the application. Officers should not have to work it out.

Which authority determines the application

Inside a National Park, the National Park Authority is the local planning authority. It determines applications, maintains the local plan and handles enforcement, and the district or county council has no role in the planning decision. That has practical consequences: a different validation list, different fees routing, a different committee cycle and usually a different design guide.

National Landscapes are different. The designation does not create a planning authority. The district, borough or unitary council remains the local planning authority, and the National Landscape team is a consultee with a management plan rather than a decision maker.

Both designations attract a statutory duty. The Countryside and Rights of Way Act 2000 places a duty on public bodies in relation to the purposes of designation, and the Levelling-up and Regeneration Act 2023 strengthened that duty so that authorities must seek to further those purposes rather than simply have regard to them. Officers now quote the stronger wording, and a landscape section that still cites the old duty reads as out of date.

Permitted development inside the designation

Designated land carries reduced permitted development rights across several parts of the General Permitted Development Order 2015. For a house inside a National Park, National Landscape, conservation area or World Heritage Site, the effects on Part 1 Class A alone include:

• No extension beyond a side wall of the original dwellinghouse.
• No rear extension of more than one storey.
• Cladding in stone, artificial stone, pebble dash, render, timber, plastic or tiles is not permitted development.
• The larger single storey rear extension route that relies on prior approval is not available.

Outbuildings under Class E are limited on designated land, with tighter rules where the building would sit between a side elevation and the boundary, and the total area that may be covered is reduced. Agricultural rights under Part 6 and the solar rights under Part 14 also carry extra conditions inside the designation.

None of this is a prohibition. It means the works need a planning application, assessed against local plan landscape policy and the Framework, and it means a Lawful Development Certificate is the only formal way to confirm that unpermitted works were lawful.

Sites outside the boundary that affect the setting

A site just outside the line is not free of the designation. National policy protects the designated landscape and its setting, and the statutory duty on the authority applies to decisions that affect the designated area whether or not the development sits inside it.

The practical test is visibility and character. A building that is visible from a well used footpath inside the National Park, or that interrupts a view out from it, will draw comment from the designation team. Where the effect is more than local, a Landscape and Visual Impact Assessment prepared to the third edition of the landscape assessment guidelines is the document officers expect, with viewpoints agreed with the authority before the survey work starts.

Agreeing viewpoints first is the single most useful thing you can do. An assessment built on viewpoints the officer did not choose gets dismissed.

Management plans and their status

Each National Park Authority prepares a management plan, and each National Landscape has a management plan prepared by its partnership. These are not development plan documents and they do not carry the weight of a local plan policy. They are material considerations, and they usually contain the landscape character assessment, the special qualities statement and the dark skies or tranquillity mapping that officers rely on.

Read the special qualities statement before writing anything. It tells you which characteristics the authority believes the designation exists to protect, and an application that engages with those characteristics by name lands very differently from one that describes the scheme as sympathetic.

Boundary reviews and variation orders

Boundaries change, though rarely. Natural England is the designating body and may make a variation order, which is then subject to consultation and confirmation by the Secretary of State. Extensions and new designations have been proposed at various times and each moves at its own pace.

Two implications for an application. First, check the dataset on the day you write, because a boundary confirmed since your last project changes the analysis. Second, where a designation is proposed and not yet confirmed, say so and give the date of the position you are describing. A proposed designation is a material consideration whose weight depends on how far the process has gone.

Evidencing the position in an application

Put the evidence in the planning statement rather than leaving it to the officer:

1. State the designation status of the site in one sentence, with the dataset and the date you checked it.
2. Include a figure showing the site boundary against the designation boundary.
3. Identify the relevant local plan landscape policies and the special qualities the management plan names.
4. Set out the landscape effects, and where the scheme is visible from the designated area, the effects on its setting.
5. Where heritage assets are also involved, deal with them in a separate Heritage Statement rather than blending the two assessments.

And keep the two questions apart. Whether the site is inside the boundary is a matter of fact that the dataset settles. Whether the proposal conserves and enhances the designated landscape is a matter of judgement that the evidence has to support.

Check the designation before you commit to a design, then work out the document list. Enter your postcode on PlanScope to see which reports the 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.