Glossary
Article 4 directions: where London PD rights are removed
A local council restriction removing specific Permitted Development rights. Most commonly applied to HMO conversions and office-to-residential changes.
A local council restriction removing specific Permitted Development rights. Most commonly applied to HMO conversions and office-to-residential changes.
An Article 4 direction is a formal decision by a local planning authority to remove specified permitted development rights in a defined area. Where one applies, work that would normally need no application — a rear extension, a new window, a cladding change — requires a full planning application instead, at the standard £548 householder fee.
It withdraws a named permitted development right in a named area, so work that was lawful without an application now needs one. It does not make the work unacceptable — it makes it assessable. Waltham Forest holds 807 such areas, more than any other London borough.
| Borough | Article 4 areas in the register |
|---|---|
| Waltham Forest | 807 |
| Southwark | 480 |
| Lambeth | 223 |
| Brent | 162 |
| Hillingdon | 150 |
| Kingston upon Thames | 114 |
| Lewisham | 89 |
Sources: MHCLG Planning Data Platform, article-4-direction-area register, retrieved 1 September 2026, excluding revoked and superseded entries, Open Government Licence v3.0; the power itself is Article 4 of the Town and Country Planning (General Permitted Development) (England) Order 2015. Boroughs absent from this table have not uploaded a register, which is a gap in the data and not evidence that no direction exists. Compensation may be payable under section 108 of the Town and Country Planning Act 1990 where a direction is made without the prescribed notice period.
The commonest reasons in London are protecting the character of a conservation area, controlling the loss of family housing to HMOs by removing the C3 to C4 permitted change, and preventing the cumulative erosion of a uniform terrace through unregulated window, door and roof alterations.
A direction is made under Article 4 of the Town and Country Planning (General Permitted Development) (England) Order 2015. It must be publicised, and where it is made with immediate effect the authority confirms it within six months or it lapses.
Every authority publishes a policies map showing Article 4 boundaries, and most London boroughs let you search by address. The direction itself is the document that matters: it names the specific classes of permitted development withdrawn, and directions vary street by street inside one borough.
Assuming a direction is borough-wide is the frequent and expensive mistake. Some cover HMO conversions across the whole authority; others cover only front elevations in a handful of conservation areas.
The route changes from permitted development, or a £274 Lawful Development Certificate, to a full householder planning application at £548 with an eight-week determination period and full neighbour consultation.
It does not mean refusal. An Article 4 direction removes the automatic right, not the possibility of consent — a well-drawn scheme that respects the character the direction protects is usually approvable.
Article 4 direction in a Harrow context: London Borough of Harrow (Harrow Council) runs 29 conservation areas including the Harrow on the Hill Conservation Area and the Pinner Village Conservation Area, and there is no borough-wide Article 4 direction, so permitted development generally survives outside conservation areas. That decides how article 4 direction is handled: £548 and 8 weeks for a Harrow householder application, or £274 for the Lawful Development Certificate that records article 4 direction as lawful. The law behind article 4 direction sits in the Town and Country Planning Act 1990, the GPDO 2015 and the Building Regulations 2010.
| Legal basis | Article 4, GPDO 2015 (as amended) |
|---|---|
| Effect | Withdraws named permitted development rights |
| Application fee once it applies | £548 (householder) |
| Determination period | 8 weeks |
| Confirmation deadline (immediate directions) | 6 months |
| Compensation | Limited; generally not payable after 12 months' notice |
No. It means you must apply for planning permission rather than relying on permitted development.
The direction itself is not appealable, but a refusal made under it is.
No. Internal alterations to an unlisted house are not development.
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