How do I find out if my London property is in an Article 4 direction area?

Check your borough's planning portal website — most London councils have a map showing all Article 4 Directions in the borough. The Planning Portal interactive house guide at planningportal.co.uk also indicates if Article 4 restrictions may apply. Alternatively, call or email the borough's planning pre-application advice service with your address — they can confirm Article 4 status within a few days. Builderr checks Article 4 status at every pre-survey stage.

Does an Article 4 Direction mean I can't extend my house in London?

An Article 4 Direction does not prohibit development — it means that works which would otherwise be permitted development now require a planning application. Many extensions in Article 4 conservation areas in London are approved, because the extension design must comply with the borough's conservation area design guidance rather than being refused outright. The planning application process adds cost (£528 fee) and time (8–12 weeks) compared to PD works, but does not prevent a well-designed extension from being approved.

What is the difference between an Article 4 Direction and a conservation area in London?

A conservation area is a designation protecting the character and appearance of an area — it restricts certain works and requires planning permission for demolition, but does not remove standard PD rights for extensions unless an Article 4 Direction is also in place. Most conservation areas in London do have Article 4 Directions removing roof alteration rights — the two often coexist. Check both the conservation area status and the specific Article 4 Direction for your address to understand which PD rights are removed.

Can an Article 4 Direction be challenged?

An Article 4 Direction made by an LPA can be challenged via judicial review in the High Court if it is considered unlawful. The LPA must follow the statutory process: a non-immediate Article 4 Direction requires 12 months' prior notice to affected owners before taking effect, and the Secretary of State can modify or cancel it. Immediate Article 4 Directions (used where an immediate threat to the area's character exists) take effect without notice but must be confirmed within 6 months. In practice, challenges to Article 4 Directions are rare.

Article 4 Direction London 2025 | What It Means for Extensions & Loft Conversions

What Is an Article 4 Direction and How Does It Affect My Extension in London?

An Article 4 Direction is a legal instrument that removes specified permitted development rights from an area, meaning works normally allowed without planning permission now require a full planning application. In London, Article 4 Directions are common in conservation areas and parts of inner London boroughs, removing rights to extend, alter roofs, change cladding, and erect satellite dishes without planning permission. Check your borough's Article 4 map before any works.

What Article 4 Directions cover in London boroughs and how to check

An Article 4 Direction is made under Article 4 of the Town and Country Planning (General Permitted Development) (England) Order 2015. It is an instrument by which a local planning authority (LPA) or the Secretary of State withdraws one or more classes of permitted development (PD) right from a specific area, requiring planning permission for works that would otherwise be permitted development. Article 4 Directions are most commonly found in: conservation areas (where they remove PD rights for roof alterations, cladding changes, dormer windows, satellite dishes, and extensions visible from the public highway); and specific high-density residential areas in inner London where the LPA considers that unrestricted PD would harm the character of the area. In London, Article 4 Directions are made at borough level and vary significantly in their scope. The most common Article 4 Direction type affecting residential works in London removes Class B rights (roof alterations) and Class C rights (changes in cladding material) from all or part of a conservation area. Some London boroughs have also introduced Article 4 Directions removing Class A rights (single-storey extensions) in specific conservation areas where visible rear extensions would harm the character of the area — though this is less common, as rear extensions are generally not visible from the public highway. London boroughs with widespread Article 4 Directions covering conservation areas: Hackney (over 50% of residential properties in conservation areas); Islington (over 60 conservation areas, most with Article 4 for roof works); Camden (numerous CAs including Belsize Park, Gospel Oak, Dartmouth Park); Hammersmith and Fulham (Brackenbury Village, Bedford Park); Kensington and Chelsea (Holland Park, Norland, Campden Hill, Brompton — most of the borough); Wandsworth (Battersea, Balham, Tooting Bec, and 17 other CAs); Richmond upon Thames (extensive CA coverage in Richmond town, Twickenham, Petersham); Westminster (56 conservation areas, near-universal Article 4 across the borough). To check whether your property is in an Article 4 zone: search the council's planning portal for Article 4 Direction maps; use the Planning Portal interactive tool at planningportal.co.uk; or contact the LPA's development management team. Builderr checks Article 4 status as part of every pre-survey planning review.

Practical effect of Article 4 Directions on extensions and loft conversions in London

When Article 4 Directions are in force, works that would normally be permitted development require a full planning application — with all the design assessment, neighbour consultation, and policy scrutiny that entails. The practical implications for the four most common work types in London: rear extensions in Article 4 conservation areas: standard single-storey rear extensions within 3m/4m depth limits are generally still PD under Class A even in Article 4 conservation areas (most Article 4 Directions in London remove Class B roof alterations and Class C cladding rights, not Class A ground floor extensions). Always check which specific classes are removed by the applicable direction. Loft conversions in Article 4 conservation areas: Class B is very commonly removed — meaning any roof alteration (dormer, hip-to-gable, roof terrace) requires full planning in most London conservation areas. Velux rooflights on rear roof slopes may still be PD under Article 4 (as they typically fall within Class A and are not visible from the public highway), but this varies by direction — check the specific direction. Cladding changes in Article 4 areas: Class C (changes to the external appearance by cladding with stone, artificial stone, pebble dash, render, timber, plastic or tiles) is commonly removed in conservation areas — meaning cladding changes require planning permission even if the property is not listed. Satellite dishes: Class H (satellite antenna) is frequently removed by Article 4 Directions on front elevations in conservation areas. Article 4 Directions and compensation: where an LPA withdraws permitted development rights via an Article 4 Direction, compensation may be payable to landowners who can demonstrate that the direction has caused them financial loss. However, compensation is only payable if a planning application for the PD works is made and refused within 12 months of the direction taking effect — an important limitation that makes compensation claims rare in practice.