HMO Conversions Hanwell

HMO conversion in Hanwell means turning a family house into a shared house, or bringing an existing HMO up to Ealing's licence standards. Ealing has used Article 4 directions to take away the permitted development right to turn a dwelling into a small HMO, and its additional HMO licensing scheme covers HMOs let to 3 or 4 unrelated people across the whole borough. We build to the planning consent and the licence standards: room sizes, kitchens and bathrooms per occupier, fire doors, detection and escape routes.

In Hanwell, a light HMO conversion for four to six tenants typically costs £40,000 to £75,000 in construction, or £90,000 to £150,000 with an en-suite to every bedroom (indicative London ranges, Mayfair Studio and LetCompliance, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Hanwell: we build the fire doors, detection, bathrooms and kitchens to the council's HMO standards, the landlord applies for the licence, and a registered electrician certifies the electrics.

Ealing's HMO Article 4 and what it means in Hanwell

A Hanwell house can no longer become a small HMO under permitted development. Nationally, Class L lets a C3 dwellinghouse become a C4 HMO without an application. In Ealing that right went in two steps: an immediate Article 4 direction in force from 30 October 2024, then a non-immediate one in force from 14 November 2025. The second applies across the borough apart from Perivale ward and the land under the Old Oak and Park Royal Development Corporation. Hanwell sits outside those exclusions, but check the ward for an address towards Perivale.

In practice, turning a Hanwell family house into a shared house for three to six sharers now needs a planning application. Ealing wrote its HMO planning guidance for exactly that C3 to C4 change. It wants a Management Plan submitted with the application, and the conditions it is likely to attach include approved plans that lock the room sizes and stop the rooms being split again later. Build to those plans exactly: a partition moved on site can breach the condition and leave you with an unlawful layout.

Housing in Hanwell

About 10,370 homes are listed for Hanwell, and the mix is 58% houses to 42% flats, with 30% built after 1945, 34% in 1919 to 1939 and 36% earlier.

Licensing a shared house in Hanwell after the build

Plan the licence alongside the build, because Ealing licenses small shared houses as well as large ones. Its additional HMO licensing scheme, in place since 1 April 2022, catches HMOs with 3 or 4 unrelated tenants anywhere in the borough, and the designation runs to 31 March 2027 unless the council revokes it sooner. Mandatory licensing applies where five or more people not living as one household share facilities. The council consulted on additional HMO licensing between 15 July 2026 and 24 September 2026, so check what follows the current designation.

Mandatory licensing does not reach a flat in a purpose-built block of three or more self-contained flats; where such a flat is shared, it is the council's additional scheme, if any, that applies.

The licence application is the landlord's, or their agent's; our job is a house that meets the standard it is judged against. Where there is no history of enforcement, an Ealing licence normally runs for 5 years, and GOV.UK warns that letting an unlicensed HMO can bring an unlimited fine. The licence inspection should therefore find the rooms, the fire precautions and the amenities already in place, rather than a list of works to finish after the tenants arrive.

Room sizes, kitchens and bathrooms in a Hanwell HMO

The room standards belong on the drawings before any partition goes up. In Ealing no room under 6.5m2 may be slept in, no bedroom may hold more than two people, and no bedroom may open off a shared kitchen. Nationally, mandatory licence conditions since 2018 set 6.51 square metres for one adult and 10.22 for two, with no sleeping room under 4.64, so an adult's room can never go below 6.51. The council also looks for bedrooms that meet the Nationally Described Space Standard and London Plan housing design guidance. Floor under a ceiling lower than 1.5m is left out when it sets occupant numbers, which catches Hanwell attic rooms.

Shared space is the other constraint. Ealing asks for 1 kitchen and 1 bathroom for every 5 occupiers, and its HMO planning guidance wants at least 25 sqm of combined living, dining and kitchen space for 3 people, and 31 sqm for 6. In an Edwardian terrace that shared room is often the knock-through between the front and back receptions, which fixes where the structural opening and the new kitchen go.

Fire safety, sound and energy in a Hanwell shared house

Fire safety is the heart of an HMO build. Expect fire doors to each letting and the kitchen, a protected escape route down the stair, and interlinked detection and alarms, to the level Ealing's licence conditions and the LACORS housing fire safety guidance set for the size of house. A C3 to C4 change is not itself a material change of use under the Building Regulations, but the building work done for it, such as new fire doors and partitions, still has to comply with Part B. We keep the fire-stopping open until it has been inspected.

In the London Plan glossary an HMO for three to six people is Use Class C4 and one for more than six is Sui Generis, so a seventh occupant means a new planning application. Sound insulation between bedrooms and the kitchen cuts complaints. On energy, GOV.UK says that since 1 April 2020 a covered property cannot be let, or go on being let, with an EPC below E without a valid exemption, so insulation and heating upgrades go into the same programme.

• Electrics extended to every bedroom, certified by a registered electrician
• Sound lining to bedroom walls and party walls
• Interlinked smoke and heat alarms, mains-wired and graded to the council's HMO fire guidance

VOA Council Tax stock of properties, March 2025, for Hanwell, Elthorne Park and Cuckoo Park. Counts rounded by the VOA.

Before committing to hmo conversions in Hanwell, it is worth looking at bathroom renovation in Hanwell, hmo conversions across Ealing, what a main building contractor does, how snagging works at handover, hmo conversions anywhere in London and Wet Room Guide.

Trusted HMO Conversions in Hanwell

We build HMO conversions to the planning consent and to the licence standards together, so the licence inspection finds the work already done. Before pricing we visit, check every room against the council's minimum sizes, and give you a written quotation with the fire precautions and amenities itemised. A structural engineer designs any opening, a registered electrician certifies the wiring and alarm, and we hand over the drawings and certificates your licence application needs.

• Sound lining between bedrooms so one sharer does not keep another awake
• Aftercare and snagging support once the job is finished
• En-suites placed only where a soil stack can serve them

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254).