Two Victorian terraced houses on a London street, one painted white and one in yellow stock brick, with bay windows
Floor plan drawings, pencil sketches of a house, a scale rule and a protractor spread across a desk
Photo: Tima Miroshnichenko / Pexels

HMO drawings · London Borough of Harrow

HMO drawings in Harrow, from £945 fixed

Harrow has needed planning permission for a small HMO across the borough since 11 June 2026, under an immediate Article 4 direction. It applies to any property not already in HMO use before 12 June 2026, and new schemes are judged against the Local Plan adopted in March 2026.

HMO drawingsfrom £795 drawings + £150 survey (£945 total)
Council fee£610
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Two Victorian terraced houses on a London street, one painted white and one in yellow stock brick, with bay windows
A London terrace. Photo: Huy Phan / Pexels.

What Harrow Council asks of a HMO conversion

From the council's Immediate Article 4 Direction: Small Houses in Multiple Occupation (adopted 11 June 2026 (in force)).

  • Harrow's immediate Article 4 direction came into force on 11 June 2026 across the whole borough, so converting a home (C3) into a small HMO (C4) for three to six people now needs planning permission, as large HMOs of seven or more always have. (source, checked 25 October 2026)
  • The council says the requirement applies to any property not already in HMO use before 12 June 2026, and that a property is only classed as an HMO once it is occupied by three or more unrelated people. (source, checked 25 October 2026)
  • Harrow consulted from 12 June to 27 July 2026 on whether the direction should be made permanent, while noting that the direction is already in effect; it does not affect the HMO licensing regime under the Housing Act 2004. (source, checked 25 October 2026)
  • The council links the direction to the Harrow Local Plan 2021 to 2041, adopted in March 2026, which it says includes stronger policies on HMOs. (source, checked 25 October 2026)

What Harrow HMO conversion drawings have to show

Harrow's control is only months old, so the first question is timing. If the house was occupied by three or more unrelated people before 12 June 2026, the use may already be established and the job is gathering evidence of that date. If not, a planning application is needed, and it will be judged against the Local Plan adopted in March 2026.

For the application, the plans show the house as a family home and as the proposed HMO: bedroom areas and occupancy, the shared kitchen and bathrooms, refuse and cycle storage. Licensing is unchanged by the direction, so the licence application can use the same drawings once permission is granted.

PS2 · at a glance

Harrow: 917 householder decisions

Harrow
Approvals, prior approvals included81.7%

749 of 917 granted. London: 85.8%.

Decided within 8 weeks94.5%

657 of 695 applications, prior approvals excluded.

Source: MHCLG PS2, 1 July 2025 to 30 June 2026. Dark tick: London.
An open-plan living room with an exposed brick wall, a sofa and a dining table under pendant lights
An open-plan ground floor: knocking rooms together is where a beam, and structural calculations, come in. Photo: Max Vakhtbovych / Pexels.

What it costs in Harrow

  • HMO drawings: from £795 drawings + £150 survey (£945 total), plus £610 to Harrow Council.
  • Where a change of use application is required.

HMO drawings across London · Harrow planning rules · every price

Answers

Harrow HMO conversion questions

When did Harrow start requiring planning permission for small HMOs?
On 11 June 2026, when Harrow's immediate Article 4 direction came into force across the whole borough. Since then, converting a home into a small HMO for three to six unrelated people needs planning permission. Large HMOs of seven or more people have always needed it.
My Harrow house was already an HMO before June 2026. Do I need permission?
The council says the requirement applies to any property not already in HMO use before 12 June 2026, and a property only counts as an HMO once three or more unrelated people live there. If yours was, keep tenancy and council tax records; a lawful development certificate for the existing use can confirm it.
Is the Harrow HMO direction permanent?
Harrow consulted from 12 June to 27 July 2026 on whether to make it permanent, but the council's page says the direction is already in effect while that decision is made. Plan on needing permission. It does not change HMO licensing, which still applies under the Housing Act 2004.

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