Article 4 HMO check — Hillingdon
London Borough of Hillingdon has published 150 Article 4 Direction areas to planning.data.gov.uk, 1 of which remove the C3 → C4 small-HMO right and 149 cover other permitted development rights. Enter a postcode to see which, if any, contain it.
Free teaser, no sign-up · Try NE2 2AL (Newcastle HMO Article 4) or SW1A 1AA (Westminster, non-HMO direction)
What is prohibited without planning permission in Hillingdon
Why this tier: 1 HMO direction (C3→C4 right removed) · commercial change-of-use rights also removed.
- 3LChange of use: dwellinghouse (C3) to small HMO (C4) — up to 6 unrelated occupiers · 1 area
- 3MAChange of use: Class E (commercial, business, service) to dwellinghouses · 71 areas
- 1AAEnlargement of a dwellinghouse by construction of additional storeys · 28 areas
- 20AANew dwellinghouses on detached buildings in commercial or mixed use · 28 areas
- 20ABNew dwellinghouses on terrace buildings in commercial or mixed use · 28 areas
- 20ZASchedule 2 Part 20 Class ZA · 21 areas
- 1AEnlargement, improvement or alteration of a dwellinghouse (extensions) · 1 area
Codes are GPDO 2015 Schedule 2 Part/Class as published by the council. "Removed" means a planning application is required for that work inside the area.
HMO Article 4 Directions published by London Borough of Hillingdon
- Houses of Multiple Occupation (HMOs)In force 2013-03-24
Plus 149 non-HMO Article 4 areas (conservation-area householder rights, commercial changes of use, etc.). A postcode check lists every one that contains the point.
FAQ
If the property sits inside one of London Borough of Hillingdon's 1 HMO Article 4 Direction area, yes: the permitted development right to change a house (C3) into a small HMO (C4, 3–6 occupiers) is withdrawn and a full planning application is required. Outside those areas a small HMO is normally permitted development. A large HMO (7+ occupiers) always needs permission. Check the exact postcode above.
Across the 150 published areas: Change of use: dwellinghouse (C3) to small HMO (C4) — up to 6 unrelated occupiers (1 area); Change of use: Class E (commercial, business, service) to dwellinghouses (71 areas); Enlargement of a dwellinghouse by construction of additional storeys (28 areas); New dwellinghouses on detached buildings in commercial or mixed use (28 areas); New dwellinghouses on terrace buildings in commercial or mixed use (28 areas); Schedule 2 Part 20 Class ZA (21 areas); Enlargement, improvement or alteration of a dwellinghouse (extensions) (1 area).
150 Article 4 areas are currently published on planning.data.gov.uk, of which 1 is HMO-related (C3→C4); the most recent HMO direction came into force 2013-03-24. Councils can add or amend directions at any time.
It is a breach of planning control. The council can serve an enforcement notice requiring the HMO use to stop; ignoring it is a criminal offence with an unlimited fine. Lenders and insurers may also treat it as a breach of their terms.
No. Article4Check UK is an independent private service that reads the open data London Borough of Hillingdon publishes to planning.data.gov.uk. Always confirm with the council's planning department before committing money.
Council website: https://www.hillingdon.gov.uk · All councils, ranked