Article 4 Directions and Small HMOs in England: How to Check a Local Direction

Reviewed: 9 September 2026 | Applies to: landlords and agents considering a small-HMO planning question in England. This is general information about checking a local Article 4 Direction, not planning or legal advice for a property.

An Article 4 Direction is a planning control, not an HMO licensing rule. It can remove a specified permitted-development right in a defined local area. This guide explains the information to check before relying on a C3-to-C4 permitted-development route. It cannot determine a property’s planning position or say whether planning permission is needed.

Keep planning and licensing separate

HMO licensing and planning answer different questions. A licence check may involve the Housing Act 2004 and a council licensing designation. An Article 4 Direction concerns permitted development and planning. One result does not settle the other.

Landlord Knowledge’s HMO licensing guide covers the separate England licensing workflow. It does not decide a planning-use or planning-permission question.

The national C3, C4 and permitted-development starting point

For planning purposes, the current Use Classes Order describes Class C3 as dwellinghouses and Class C4 as houses in multiple occupation. Class C4 covers use of a dwellinghouse by no more than six residents as an HMO. The actual use of a particular property is a planning fact to check, not a label that can safely be assumed from an advert, tenancy or licensing record.

Schedule 2, Part 3, Class L of the General Permitted Development Order includes changes of use between C3 and C4, subject to its terms. That national starting point is not a conclusion for an individual building. The Planning Practice Guidance says that whether a material change of use has occurred is a matter of fact and degree, determined on the individual merits of the case.

What an Article 4 Direction can change

Article 4 of the General Permitted Development Order allows the Secretary of State or a local planning authority to make a direction where it is expedient that specified Schedule 2 development should not be carried out unless permission is granted on an application. The direction must identify the relevant development and either an area or particular development.

The government planning guidance describes an Article 4 Direction as a way to withdraw specified permitted-development rights across a defined area. It also says a direction cannot restrict changes between uses within the same use class. The wording, map or boundary, scope and effective date of the actual direction are therefore central to any local check.

Article 4 is not a national HMO permission rule. A direction might concern the Class L C3-to-C4 route, but its effect depends on the precise direction rather than the words “Article 4” alone.

How to check a local direction

1. Start with the council’s planning service, not its licensing page. Look for the authority’s current Article 4 Direction register or planning-policy page for the property’s area.
2. Read the direction and its schedule. Check which General Permitted Development Order part and class it names. For a small-HMO conversion question, do not assume every direction concerns Class L(b), C3 to C4.
3. Check the mapped area against the exact property. A council-wide page is not a substitute for the direction’s own map, schedule or boundary description.
4. Check timing and status. Identify when the direction was made, when it took effect, and whether the council records a confirmation, modification, cancellation or replacement.
5. Check the stated scope and exclusions. The direction may be limited by location, type of development or other wording. Read the whole current document, not a news report or search result.
6. Keep the documents. Retain the version of the direction, map and council correspondence used for the enquiry, together with the property’s relevant planning records.

This is a research checklist, not a permission decision. If the documents do not give a clear answer for the intended use and property, the council’s planning service or a suitably qualified planning professional can advise on the appropriate next step. GOV.UK notes that a certificate of lawful development can provide formal confirmation in relevant cases.

Why the property facts still matter

Even after finding a direction, a planning position can depend on the property’s existing and intended use, the exact land and building, the direction’s area and commencement date, any planning history, conditions or obligations, and the council’s current development plan policies. Works or other consents can raise separate issues as well.

For that reason, this guide does not classify a property, interpret a direction for an address, advise on an application, or say that a property does or does not need planning permission. It also does not provide local maps, local direction lists, fees or licensing requirements.

Common points to avoid

• Do not treat an HMO licence as planning permission. Licensing and planning are separate regimes.
• Do not treat a local news story or consultation as a live direction. Check the council’s current planning documents and dates.
• Do not assume every HMO is Class C4. The planning use and facts need their own assessment.
• Do not rely on a national yes-or-no rule. The applicable permitted-development right, direction, local policy and property facts must be checked together.

Official sources