Hillingdon HMO & Article 4 planning
0 applications in the last 12 months · Analysis updated 19 Jul 2026 · Low confidence
Hillingdon — 150 active Article 4 directions in our records, but HMO coverage uncertain; verify with council.
Outer London suburban borough, lower-density family-oriented stock with significant green-belt constraints and limited density development pressure.
Heavy Article 4 footprint in our database (150 active directions), only 1 flagged as HMO-specific—council verification essential to establish actual HMO restriction scope.
Insufficient data for a confident read; verify Article 4 HMO coverage and recent approval patterns directly with Hillingdon planning before committing.
ASTOR UNDERWRITING UNIT // AI SYNTHESIS // VERIFY WITH COUNCIL BEFORE ACTING
See the full picture for Hillingdon
Sign up free to unlock the last 0 applications with risk scoring, recent HMLR sold prices, top case officers, and weekly digest emails for any borough you're tracking.
–
Investment Grade
A: select with confidence · B: selectable with discipline · C: case-by-case · D: avoid unless exceptional
Insufficient data for hillingdon (0 apps, 0 decided).
HMO Requirements in Hillingdon
What it takes to run a House in Multiple Occupation in Hillingdon — whether you need planning permission, the licence the property must hold, and the statutory minimum room sizes. Verify current details with the council before committing.
Full guides: HMO licensing in Hillingdon ↗ · Article 4 directions ↗
An Article 4 direction removes permitted development rights for small HMOs (C3→C4) in 1 designated area in our records — converting a family home to a small HMO needs full planning permission here. Confirm whether your property falls within the designated area.
See the full Article 4 picture below ↓Any HMO occupied by five or more people making up two or more separate households (sharing a kitchen, bathroom or toilet) must hold a mandatory HMO licence. This applies in every council in England, regardless of the number of storeys.
| One person aged over 10 | 6.51 m² |
| Two people aged over 10 | 10.22 m² |
| One person aged under 10 | 4.64 m² |
| Any sleeping room | ≥ 4.64 m² |
Licensed HMOs must provide adequate, well-located cooking, washing and toilet facilities for the number of occupants, plus safe gas/electrics, working fire detection and proper waste storage. The exact ratios (occupants per bathroom, per WC, kitchen size) are set by each council in its own HMO amenity standards — confirm the figures with the borough before committing to a scheme.
Minimum room sizes and the mandatory-licensing threshold are national law (Licensing of Houses in Multiple Occupation (Mandatory Conditions of Licences) (England) Regulations 2018), sourced under the Open Government Licence v3 — they apply in every council. Licensing designations shown are those in our records; verify the current position and exact amenity standards with Hillingdon Council before relying on this. gov.uk: HMO licences ↗