Article 4 Directions and HMO Planning Permission in England

You've secured an HMO licence from the council, so everything must be in order. Except the planning department has just sent you a breach-of-planning notice, because the property never had permission to be used as a shared house. Licensing and planning are two separate systems in England, and an Article 4 direction is the mechanism that catches landlords between them.

How Use Classes Work for Shared Housing

Under the Town and Country Planning (Use Classes) Order 1987, residential properties in England fall into two relevant classes:

• Class C3 — a single household dwelling (a family home or a property let to a single household).
• Class C4 — a small HMO occupied by three to six unrelated individuals who share basic amenities.

Normally, converting a C3 dwelling to a C4 small HMO is permitted development — it doesn't require a planning application. A property used as an HMO by seven or more people who do not form one household falls outside C4 and is classified as Sui Generis. A change from C3 to that Sui Generis use requires planning permission; it does not benefit from the C3-to-C4 permitted-development right.

What an Article 4 Direction Does

An Article 4 direction is a council order that removes specific permitted development rights in a defined area. When a council introduces an Article 4 direction covering C3-to-C4 conversions, any landlord who wants to convert a family home into a small HMO must apply for planning permission first — the automatic right is withdrawn.

Major cities that have introduced Article 4 directions for HMOs include Birmingham (citywide), wards in Manchester, Leeds, and Nottingham, and multiple London boroughs. The boundaries are council-specific: some apply across the entire authority area, others target individual wards or streets. You need to check the council's planning pages for your property's exact address.

Planning Permission Is Not an HMO Licence

This is the distinction that trips landlords up. Planning permission and an HMO licence are issued by different departments of the same council, under different legislation, with different criteria:

Having an HMO licence does not grant planning consent. Having planning permission does not remove the need for a licence. You can be fully licensed but in breach of planning, or have valid planning permission but operate without a licence. Either gap carries its own enforcement consequences.

What Happens If You Don't Have Planning Permission

If your property is in an Article 4 area and you're using it as a C4 HMO without planning consent, the council's planning enforcement team can serve a planning contravention notice asking you to explain the use, followed by an enforcement notice requiring you to stop the HMO use and revert to C3.

There is one important exception: if the property has been used continuously as an HMO for more than 10 years without planning permission, the use is deemed legally established. You can apply for a Lawful Development Certificate (LDC) to confirm this — the burden of proof is on you to demonstrate the 10-year history with tenancy agreements, council tax records, or licensing history.

Checking Your Position

Before you apply for an HMO licence — or if you've already got one and haven't checked planning — follow this sequence:

1. Search your council's planning pages for any active Article 4 direction covering HMOs in your postcode.
2. If one exists, check whether the property had C4 or Sui Generis planning permission before the direction came into force, or whether it was already in lawful HMO use for over 10 years.
3. If neither applies, submit a planning application for C4 use before or alongside your licence application.

Properties used as HMOs by seven or more people who do not form one household need planning permission for the change to Sui Generis use. The permitted-development right applies only to a C3-to-C4 change for a small HMO of three to six people.

The HMO licensing guide covers how planning permission, licensing, and the mandatory threshold interact, with a walkthrough of what to check and in what order before you submit the licence application.

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