Pergola, pergoda or pagoda: do I need planning permission?

Pergola, “pergoda”, pagoda. People spell it and say it every which way, but the planning question is the same: can you put one up in your garden without asking the council? For the great majority of homeowners the answer is yes. A pergola is treated as a garden outbuilding, and like a shed or a summerhouse it is almost always permitted development, provided it stays within a handful of limits. This page sets out those limits, the situations where they don’t apply, and when a pergola does need planning permission.

Is a pergola permitted development?

In most cases, yes. A pergola in a rear garden is treated as an outbuilding under Class E of Part 1 of the GPDO, the same permitted development right that covers sheds, greenhouses and garden offices. If it meets the Class E limits, no planning application is needed. Those limits are the whole story, so they are worth knowing before you buy or build.

The pergola planning permission rules

To sit within permitted development as a Class E outbuilding, a pergola needs to keep to these:

• Height near a boundary: within 2 metres of any boundary, no more than 2.5 metres tall
• Height away from boundaries: more than 2 metres from every boundary, up to 3 metres for a flat, mono-pitch or louvred roof, or up to 4 metres for a dual-pitched (A-frame) roof
• Position: not forward of the principal elevation of the house (in practice, not in the front garden facing the road)
• Coverage: the total area of ground covered by buildings, enclosures and containers within the curtilage, other than the original dwellinghouse, must not exceed 50% of the total curtilage area. Existing extensions and outbuildings therefore count towards the calculation
• Use: it must be for a purpose incidental to the enjoyment of the home, such as outdoor dining, shade or relaxing, not as living accommodation

Most off-the-shelf timber and aluminium pergolas are around 2.2 to 2.4 metres tall, so they comfortably clear the 2.5 metre limit even close to a fence. The rule that catches people out is not the pergola itself. It is what sits underneath it, which we come to next.

The decking and raised-platform trap

Height is measured from the ground. If you build a pergola on top of decking, that extra height counts towards the total, and it can push an otherwise-compliant pergola over the limit. Worse, a pergola built on a raised platform (anything more than 300mm above the ground) falls outside the outbuilding right altogether, because Class E does not permit a raised platform. If you are combining a pergola with raised decking, check the combined height carefully, because this is the most common way a pergola quietly loses its permitted development.

Wall-mounted pergolas, and pergola versus pagoda, gazebo and arbour

A freestanding pergola is normally considered under Class E where it amounts to a building or structure required for an incidental domestic purpose. A wall-attached pergola needs more care. Government guidance says buildings attached to the dwellinghouse are dealt with under Class A rather than Class E, but physical contact alone should not be treated as a complete legal test for every lightweight garden structure. Consider the scale, construction and relationship with the house. If the proposal amounts to an enlargement, improvement or alteration under Class A, the Class A limitations and conditions apply; and if a covered structure is properly described as a verandah, the express verandah exclusion will prevent reliance on Class A.

The terminology trips people up, so for the record: a pergola is an open framework of posts and cross-beams, usually over a path or patio, often for climbing plants; a pagoda is properly a tiered Asian tower, though the word is often used loosely for a tented garden gazebo; a gazebo is a roofed, often enclosed garden shelter; and an arbour is a small shaded seat or arch. In planning terms the label does not matter. What matters is the height, the position and the coverage. All of them are judged as outbuildings against the same Class E limits.

When a pergola does need planning permission

You are likely to need permission where any of these apply:

• the pergola is taller than the Class E limits, or is placed forward of the principal elevation
• the Class E development would cause the 50% curtilage coverage limit to be exceeded once existing extensions, buildings, enclosures and containers are taken into account
• the home is a flat or maisonette, which do not enjoy these outbuilding rights
• the property is listed: listed buildings do not benefit, and listed building consent may be needed as well
• the home is on Article 2(3) land, such as a conservation area, National Park or National Landscape, where Class E has additional siting and area restrictions. The right is not automatically removed simply because the land is designated
• an Article 4 direction has withdrawn the right for your area

On Article 2(3) land, Class E does not permit an outbuilding or enclosure on land between a wall forming a side elevation of the dwellinghouse and the curtilage boundary. In National Parks, National Landscapes, the Broads and World Heritage Sites there is also a cumulative 10 square metre limit for Class E buildings, enclosures, pools and containers situated more than 20 metres from any wall of the dwellinghouse. A conservation area on its own does not impose that separate 20 metre / 10 square metre limit.

What it costs, and what if the council says no

If you do need to apply, this is a householder application. Application fees are set nationally and change from time to time, so we don’t quote a figure here. See our guide to planning application fees for the current position. If you are unsure whether your pergola is permitted development, you can apply for a Lawful Development Certificate to confirm it in writing, useful evidence when you come to sell. And if a full application is refused, you can appeal to the Planning Inspectorate; our guide to planning appeals explains the deadlines and how it works.

Should you just build it?

For a normal open-sided pergola in a back garden, kept under the height limits and off any raised platform, the honest answer is that you almost certainly don’t need permission and can go ahead. The time to pause is when it is tall, attached to the house, on decking, close to a boundary, or on designated or listed land. In those cases a quick check with the council, or a Lawful Development Certificate, is a lot cheaper than taking it down later. When in doubt, confirm before you build.

Other Common Projects

Pergola Planning Permission Page Updated: 2nd September 2026