Hampstead Architecture and Planning

Planning & Consents

Article 4 Direction Advice in London

Article 4 directions remove permitted development rights in many London conservation areas and managed streets, so works that would be permitted elsewhere need full planning permission. We confirm whether a direction applies to your property and plan the project accordingly.

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The short answer

What is an Article 4 direction?

An Article 4 direction is a planning tool that removes specified permitted development rights in a defined area so works that would otherwise not need permission require a planning application. They are common in London conservation areas and for basements in some boroughs. The exact rights removed are written in the direction — generalisations are dangerous.

When permitted development no longer applies

Permitted development lets some works proceed without a planning application — but local authorities use Article 4 directions to withdraw those rights where uncontrolled change would harm an area’s character. Across prime London they commonly apply to front elevations, windows, roofs, boundary treatments and the loss of front gardens to hardstanding. The result is that a project an owner assumed was “permitted” in fact needs full permission, and is assessed against conservation and design policy.

Planning around the restriction

We check the borough’s adopted Article 4 directions and conservation-area designations for the specific property, confirm exactly which works are caught, and advise how to proceed — whether that means a full application, a lawful development certificate to confirm what remains permitted, or a design that works within the constraint. Getting this right early avoids the common and costly mistake of starting works that turn out to need permission.

What Article 4 directions commonly target

Article 4 directions are used selectively to protect the things that define an area’s character, and across prime London they recur in predictable forms: the replacement of windows and doors, alterations to roofs and the addition of dormers, changes to front elevations and chimneys, the loss of front gardens to hardstanding or off-street parking, and changes to boundary walls and railings. The common thread is that they remove permitted development from the parts of a property the public sees. Knowing which elements a direction captures is the difference between a smooth project and an accidental breach.

Checking the direction for your property

Article 4 directions are specific documents: each names the permitted development rights it withdraws, the area it applies to, and the date it took effect, and the wording genuinely matters. A direction may remove rights only from front elevations, or only within a defined boundary, and rights exercised before it took effect can remain lawful. We check the relevant borough’s adopted directions and their maps against the actual property, rather than relying on a general assumption that "the whole conservation area is covered", so the advice reflects what the direction really says.

Living with an Article 4 — and the certificate option

Where a direction applies, the works are not forbidden — they simply need planning permission rather than proceeding automatically, and are judged against conservation and design policy. We design and apply for them on that basis. Where the position is uncertain, a lawful development certificate can confirm what rights, if any, remain. The one thing to avoid is assuming permitted development still applies and starting work: breaching a direction exposes you to enforcement, and the cost of putting it right far exceeds the cost of confirming the position first.

Check the direction that hits your address

Article 4 is not one London rule. Camden, RBKC, Westminster and others operate different directions on different works. We identify the direction that applies to your property and map which rights are actually removed — front alterations, roof changes, basements, fences — before advising on extensions or lofts.

Properties just outside a direction boundary can still be conservation-area constrained. Both layers matter.

Design implications

When PD is removed, design quality and heritage response carry more weight because everything goes through application. That is not a ban on change; it is a requirement to make a proper case. We design with the application tests in mind from day one.

Basement Article 4 regimes often pair with detailed borough basement policy. Those projects need technical evidence as well as architectural drawings.

Practical next steps

Confirm the direction, confirm remaining options, then choose LDC only where rights still exist, or planning application where they do not. We document the check so you are not relying on verbal assumptions at tender stage.

Buyers should treat Article 4 as a pricing and programme input, not a footnote.

What we produce

Typical deliverables

  • Confirmation of any Article 4 direction on the property
  • Clarity on which works now need permission
  • A planning route that respects the restriction
  • Lawful development certificates where rights remain
  • Coordination with conservation-area design requirements

London-specific

What to keep in mind

  • Article 4 directions are common across prime London conservation areas
  • They often target windows, roofs, front elevations and front gardens
  • Each borough’s directions are worded and mapped differently
  • A lawful development certificate can confirm remaining rights
  • Breaching a direction risks enforcement

How the process works

From first call to completion

  1. Designation check

    We check Article 4 and conservation-area status.

  2. Scope

    We confirm which works are caught by the direction.

  3. Strategy

    We advise the right application or certificate route.

  4. Design

    We design within the constraint where needed.

Considering this for your property?

Tell us the address and a short description of the work. We will advise which drawings, approvals and consultant inputs your project is likely to need.

Avoiding pitfalls

Common risks & mistakes

  • Assuming permitted development applies in a conservation area
  • Starting works without checking for an Article 4 direction
  • Replacing windows or roofs that are now controlled
  • Relying on what a neighbour did before the direction

Frequently asked questions

What is an Article 4 direction?

It is a measure a local authority uses to remove permitted development rights in a defined area, so works that would otherwise be permitted require a full planning application. They are common in London conservation areas.

How do I know if my property is affected?

We check the borough’s adopted directions and conservation-area maps for the specific property and confirm exactly which works are caught.

Can I still do the work?

Usually yes, but it needs planning permission rather than proceeding as permitted development, and it is assessed against conservation and design policy. We plan the route accordingly.

How much does Article 4 advice cost?

We work to fixed fees agreed in writing before each stage, starting with a £395 route review credited if you proceed. See our /packages/ page for how stages are structured.

How long does Article 4 advice take?

Identifying the relevant direction and explaining its effect on your proposed works is usually a short advisory task once the address and sketch proposals are known. Designing an application that responds to removed rights takes the normal design and planning programme thereafter. We keep the advisory step fast so you can choose a route without delay.

Discuss your project

Tell us about the property, location and the work you are considering. We will advise which architectural drawings, approvals or consultant inputs are likely to be needed.

Areas

Article 4 Direction Advice across London

Follow the local area pages for property types, planning authority context and conservation considerations in each neighbourhood we serve.

Browse all 194 additional London areas

Published local service pages appear above. Where a service-specific page is not yet published, these links lead to the public neighbourhood hub rather than an unpublished or generic local-service page.

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