Article 4 Areas in the North: What HMO Landlords Need to Know

What an Article 4 direction is

By default, converting a family home (planning class C3) into a small HMO for 3–6 unrelated occupants (class C4) is permitted development — you can do it without a planning application. An Article 4 direction removes that automatic right within a defined area. Once it's in force, creating a new small HMO there requires full planning permission, which the council can refuse.

Councils use Article 4 to control the concentration of HMOs — typically in areas around universities, town centres, or wards where HMO density has become a local issue. Directions can cover a whole council area or just specific wards and streets.

One thing Article 4 does not change: large HMOs (7+ occupants, sui generis) have always needed full planning permission everywhere. Article 4 is about the small-HMO permitted development right.

What it means in practice

• •Existing HMOs are generally safe. Article 4 is not retrospective — an HMO lawfully established before the direction came into force keeps its lawful use. If the use isn't documented, a Certificate of Lawful Use from the council puts it beyond doubt (and makes the property easier to sell, finance, or lease to a provider).
• •New conversions need planning permission. In an Article 4 area, a C3→C4 conversion is a full application, judged against local HMO policies — often including density caps (e.g. limits on the percentage of HMOs within a radius).
• •Buying an established HMO in an Article 4 area can be a feature, not a bug. The restriction limits new supply, which supports the value and rentability of HMOs that already exist lawfully. The critical step is verifying the lawful use before you exchange.
• •Directions take effect on a date. Councils must give notice before a direction comes into force — which is why conversion activity often spikes in the window between announcement and commencement.

Where Article 4 applies in the North (as of July 2026)

These northern councils have long-established HMO Article 4 directions covering all or most of their area:

Dates per Planning Geek's Article 4 register, checked July 2026. Many other councils have partial directions covering specific wards — always verify the specific address (see below).

New directions coming in 2026–27

A cluster of new HMO Article 4 directions has been announced across the North East and North West, with commencement dates reported as:

• •Darlington — reported in force from 28 July 2026 (partial coverage). If you're planning a conversion there, the permitted-development window is closing this month.
• •Hartlepool — reported from 1 December 2026 (partial).
• •Middlesbrough (Development Corporation area) — reported from 31 December 2026 (partial).
• •Preston — reported from 15 February 2027 (partial).
• •Stockton-on-Tees — a direction has been indicated with the commencement date to be confirmed.

Why this matters: these are exactly the areas where social housing providers are actively sourcing HMO stock. An HMO lawfully established (or converted under permitted development) before a direction commences keeps its position; the same conversion attempted afterwards becomes a planning application.

Commencement dates are as reported at the time of writing and can change — confirm with the relevant council before making decisions.

How to check any address in five minutes

1. 1Search "[council name] Article 4 direction HMO" — most councils publish a map or street list on their planning pages.
2. 2If the coverage is partial, check the map carefully — directions can split individual streets.
3. 3Still unsure? Email the council's planning department with the full address and ask directly. Keep the reply in writing.
4. 4Buying an existing HMO? Ask for evidence of lawful use — planning permission, a Certificate of Lawful Use, or documented history of HMO use predating any direction. Don't rely on the listing description.

What it means for social housing submissions

Providers sourcing HMO stock for schemes like AASC check the planning position before accepting a property — and their submission lists often close entire wards where planning or saturation is an issue. In practice:

• •An established HMO with documented lawful use in an Article 4 area is usually submittable.
• •A proposed new conversion in an Article 4 area needs planning permission before it's viable for a scheme.
• •Provider requirements shift — areas open and close. We check both the Article 4 position and the provider's current list before putting any property forward.

New to how these schemes work? Start with our landlord's guide to leasing for social housing, or see what providers are asking us for right now.