Article 4 Directions in London: How They Affect Your Planning Rights

Understand what an Article 4 direction is, which London boroughs use them, what permitted development rights they remove, and how to find out if your property is affected.

An Article 4 direction is a legal mechanism that allows a local planning authority to remove specific permitted development rights in a defined area. They are common across London and used to protect conservation areas, manage basement excavations, prevent residential properties from being converted to HMOs or short-term lets, and control other changes that councils want to keep a closer eye on.

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When it may be permitted development

These are the common features that keep a project on the simpler route.

Works that are not covered by the specific Article 4 direction at your address remain permitted development and do not need planning permission.
Article 4 directions are targeted — they remove particular PD rights, not all PD rights — so understanding the scope of the direction is important before assuming full planning permission is needed.
Some Article 4 directions apply to specific classes of PD rights only, such as those covering changes of use or basement works, leaving other rights intact.

When planning permission is more likely

These are the usual triggers that push a scheme beyond straightforward PD rights.

Any works or change of use that falls within the class of permitted development removed by an Article 4 direction requires a full planning application.
Common examples include: replacing windows in a conservation area covered by an Article 4 direction; converting a house to a house in multiple occupation in a borough that has used Article 4 to restrict HMO conversions; basement works in boroughs like Hammersmith and Fulham that have borough-wide Article 4 directions.
Carrying out works that should have required planning permission due to an Article 4 direction can result in enforcement action, even if the works would otherwise have been permitted development.

What CanUBuild checks

Faster answers before you speak to an architect or builder

The tool is designed to answer the first question most homeowners have: is this worth pursuing, and what is most likely to block it?

CanUBuild checks whether your address is affected by relevant Article 4 directions as part of the planning constraint assessment — covering conservation area directions, basement directions, and use class restrictions.

The constraint check also flags other overlapping designations — listed buildings, flood risk, TPOs — that commonly appear alongside Article 4 coverage.

Because Article 4 directions vary significantly by borough and location, an address-level check is the only reliable way to understand what rights you still have.

FAQ

Questions people ask before starting a project

What is an Article 4 direction?

An Article 4 direction is a formal legal order made by a local planning authority under the Town and Country Planning (General Permitted Development) (England) Order 2015. It removes one or more categories of permitted development rights in a specified area, requiring planning permission for works that would otherwise not need it.

How do I know if my property is affected by an Article 4 direction?

You can check with your local planning authority, look at the council's planning portal, or use an address-level constraint checker like CanUBuild. Article 4 directions are also sometimes noted on the local land charges register, which solicitors check on conveyancing.

Does living in a conservation area automatically mean I have an Article 4 direction?

No. Conservation area designation and Article 4 directions are separate. Many conservation areas in London do have Article 4 directions — often targeting windows, doors, and roof alterations — but not all do. You need to check whether a specific Article 4 direction has been made for your area.

Can an Article 4 direction be challenged or appealed?

Local planning authorities must follow a consultation and notice procedure before an Article 4 direction takes effect. During the consultation period, representations can be made. Once confirmed, an Article 4 direction can only be challenged by judicial review. If planning permission is subsequently refused for works caught by the direction, the normal planning appeal process applies.

Next step

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