Article 4 by council › Hillingdon
HMO Article 4 in Hillingdon
Do you need planning permission to turn a family home into a small HMO in Hillingdon? What the council's own direction says, with dates, the map and the source.
Yes, in the areas Hillingdon has published.
Hillingdon has published 150 Article 4 direction areas to the national planning dataset, 2 of them for HMOs. A small HMO of 3 to 6 people needs full planning permission inside those areas. The postcode checker below tests the exact point against them.
Check an exact postcode
A direction can cover part of a council, and the national dataset is incomplete. This asks the planning data service for the exact point and falls back to the council's own statement.
Licensing in Hillingdon
Mandatory HMO licence: 5 or more people forming 2 or more households sharing facilities.
Additional licensing: yes, whole borough (from 20 May 2026).
Selective licensing: none found. Council HMO pages list mandatory and additional HMO licence schemes only; no selective licensing scheme mentioned.
What an Article 4 direction means
HMO Article 4 directions remove the permitted-development right to convert a family home (C3) to a small HMO (C4, 3 to 6 people). Inside one, that conversion needs full planning permission. Councils may also run additional licensing (smaller HMOs) or selective licensing (all private rentals) in designated areas. Planning permission and licensing are separate: a licence does not grant planning permission, and permission does not remove the need for a licence.
Sources: planning.data.gov.uk Article 4 direction areas, gov.uk HMO licensing. Indicative; confirm with the council before you offer.