GPDO Article 3 Wales – how permitted development is granted

People often talk about a Class in the GPDO as though the Class itself grants planning permission. Strictly speaking, the permission comes from Article 3. Schedule 2 describes the development which can benefit from that permission and then adds the relevant limits, exceptions and conditions.

That distinction matters because satisfying the wording of a particular Class is not always enough. Article 3 contains several rules which can prevent the Schedule 2 permission from being used at all.

You can read the latest revised Article 3 on legislation.gov.uk. England now has a separate GPDO, so this page should only be used for development in Wales.

Article 3(1) to (3) – the permission behind the GPDO

Article 3(1) grants planning permission for the classes of development described as permitted development in Schedule 2. Article 3(2) immediately qualifies that permission: every relevant exception, limitation and condition in Schedule 2 still has to be satisfied.

Article 3(3) then makes the drafting work. When a later provision refers to permission granted by Schedule 2, a Part or a Class, it is referring back to the planning permission granted by Article 3.

In practical terms, the test is therefore not simply “does my development look like Class A?” It is whether the proposal falls within the development described by that Class, complies with its limits and conditions, and is not prevented by one of the wider Article 3 restrictions.

Article 3(4) – an existing planning condition can block permitted development

Article 3(4) says that the GPDO does not permit development which would be contrary to a condition imposed on another planning permission.

This is why checking the planning history can be essential. A house, commercial building or site may appear to have a permitted development right under Schedule 2, but an earlier planning permission may contain a condition removing or restricting the ability to rely on it.

That is different from an Article 4 direction. An Article 4 direction restricts permitted development through the GPDO machinery. Article 3(4) is concerned with a condition attached to a particular planning permission. The wording and effect of the condition itself therefore need to be checked before relying on the GPDO.

Article 3(5) – an unlawful building or use cannot found the right

Article 3(5) prevents reliance on Schedule 2 where the permitted development right depends on an existing building whose construction was unlawful, or an existing use which is unlawful.

This can be easy to overlook. A proposal may satisfy every dimensional limit in the relevant Class but still fail because the building or use on which the right depends is not lawful.

The question is the lawfulness of the existing building operations or use. It is not enough simply to point to the fact that they physically exist.

Article 3(6) – highways and dangerous visibility

Subject to specific exceptions, Article 3 does not authorise development which requires the formation, laying out or material widening of an access to a trunk road or classified road. It also prevents reliance on the GPDO where the development would create an obstruction to the view of people using a vehicular highway in a way likely to cause danger.

The Article contains exceptions for development within Parts 9, 11, 13 and 30 of the Welsh Schedule 2. We will deal with those Parts individually when we reach them rather than treating Article 3(6) as a universal ban on every highway-related operation.

Article 3(7) to (9) – other general restrictions

Article 3 also contains three more specialised controls:

• Article 3(7) deals with certain Part 11 development authorised by another Act or order where a separate consent or approval is still required
• Article 3(8) restricts the laying or construction of a notifiable pipeline, subject to the stated gas transporter exception
• Article 3(9) provides that Schedule 2 does not generally permit development requiring or involving demolition of a building except where Part 31 provides the permission. For this paragraph only, “building” does not include part of a building

These provisions are another reason to check Article 3 before treating a Schedule 2 Class as a complete answer in isolation.

Article 3(10) to (12) – Environmental Impact Assessment

The current Welsh wording of Article 3(10) and (11) is tied to the Town and Country Planning (Environmental Impact Assessment) (Wales) Regulations 2017.

Broadly, Schedule 1 or Schedule 2 development within those EIA Regulations cannot rely on the GPDO unless the necessary screening process establishes that it is not EIA development, or the appropriate exemption applies. If the development is found to be EIA development, Article 3 prevents the GPDO permission being used.

Article 3(12) contains a number of specific exceptions to that rule for particular statutory and infrastructure development. Those exceptions are technical and Class-specific, so we will cross-link them when the relevant Parts are built.

This EIA restriction is separate from any prior approval procedure contained within an individual permitted development Class.

Habitats Regulations – an important Welsh drafting wrinkle

The face of the revised 1995 GPDO still says that Article 3(1) is subject to regulations 60 to 63 of the Conservation (Natural Habitats, &c.) Regulations 1994. Those Regulations have long since been replaced, so that historic cross-reference should not be read as though the 1994 Regulations are still the current code.

For the Welsh 1995 GPDO, the transition is unusually awkward. Schedule 7 to the Conservation of Habitats and Species Regulations 2017 expressly preserves regulation 73 of the 2010 Habitats Regulations so far as it relates to planning permission granted by a general development order made before 30th November 2017. The Welsh GPDO was made in 1995, so it falls within that preserved category.

Regulation 73 imposes a condition where development is likely to have a significant effect on a protected European site or European offshore marine site and is not directly connected with or necessary to its management. Such development must not simply proceed in reliance on the GPDO.

The practical Welsh position is nevertheless clear. Current Natural Resources Wales advice says that permitted development likely to have a significant effect on an SAC must not commence until the planning authority has given the necessary written approval. Welsh planning guidance and Planning Inspectorate material continue to treat affected GPDO development as requiring the Habitats Regulations assessment/approval route.

If a proposal could affect a protected site, do not assume that having a permitted development right is the end of the matter. The Habitats Regulations need to be dealt with before development begins.

Article 3(13) – electronic applications

Article 3(13) was added for Wales in 2005. Where an application required under one of the specified Schedule 2 Parts is made electronically, the applicant is treated as agreeing to electronic communications for matters relating to that application.

The electronic address associated with the application becomes the address for those communications. The applicant can revoke that agreement in writing, but the revocation cannot take effect less than seven days after the notice is given.

This paragraph currently refers specifically to applications under Parts 6, 7, 22, 23, 24, 30 and 31. We will check that cross-reference again whenever one of those Parts is amended.

Article 3 is the starting point, not the whole answer

The easiest way to think about the Welsh GPDO is that Article 3 opens the door to permitted development, while Schedule 2 tells you which developments can walk through it and on what terms.

You therefore need both layers. A development can fail because it does not satisfy its Class, but it can also fail because one of the wider Article 3 restrictions applies.

The next step is Article 4, which allows permitted development rights granted through Article 3 to be restricted by direction. The Welsh Article 4 procedure was substantially changed in 2022, and the Welsh page is built from that current procedure rather than copied from the English section.

Article 3 legislation

Article 3 is the provision which actually grants the planning permission. The wording below follows the current revised text applying to the 1995 Order. Provisions which have been omitted are marked as such rather than silently removed.

View the current revised Article 3 on legislation.gov.uk. The current EIA wording points to the Town and Country Planning (Environmental Impact Assessment) (Wales) Regulations 2017.

Welsh GPDO Articles

The Articles are the legal framework for the General Permitted Development Order in Wales. Use the links below to move between the current Articles or return to the Welsh GPDO section.

Legal check: 6th September 2026