Harrow HMO & Article 4 planning
1786 applications in the last 12 months · Current to 23 September 2026 via the Planning London Datahub — list only, no case papers.
Harrow — 1,794 applications in last 12 months; 1 HMO-specific A4 direction on record.
Outer London suburban borough, predominantly lower-density family housing and conversion stock.
1 HMO-specific Article 4 direction in our records — verify current scope with council as coverage may be incomplete.
Single HMO-specific A4 limits the bridging/HMO read; strong activity volume suggests active market, but regulatory footprint requires council confirmation.
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HMO Requirements in Harrow
What it takes to run a House in Multiple Occupation in Harrow — 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 Harrow ↗ · Article 4 directions ↗
An Article 4 direction removes permitted development rights for small HMOs (C3→C4) across the whole borough 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 Harrow Council before relying on this. gov.uk: HMO licences ↗
Article 4 Directions in Harrow planning.data.gov.uk
Borough-wide Article 4 (HMO) — Harrow HMO since 2026
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