HMO Conversions Wallington

HMO conversion in Wallington now starts with planning. Sutton's Article 4 Direction removing the permitted change from a dwellinghouse to a house in multiple occupation covers the whole borough and came into force on 22 February 2025, and the borough-wide Additional Licensing Scheme reaches HMOs below the mandatory threshold. We build shared houses and upgrade existing ones to the licence standards the landlord is working to, from room sizes and kitchens to fire doors and alarms.

In Wallington, 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 Wallington: 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.

Planning permission for a Wallington HMO after the Article 4

Turning a Wallington family house into a shared house for three to six sharers now needs planning permission. Nationally, Class L permits a change from C3 dwellinghouses to C4 HMOs. Sutton's Article 4 Direction on HMOs was made on 22 February 2024 and confirmed by the Housing, Economy and Business Committee on 26 November 2024. It removes that right across the whole borough, and it came into force on 22 February 2025. A house that was not already in lawful HMO use before then needs an application, so the owner checks the property's planning history first.

An HMO for more than six people is sui generis and has always needed permission. For new large HMOs, Sutton Local Plan Policy 10 also looks along the street: if more than 20% of the properties within 100 metres either side are already HMOs, Sutton treats that as a harmful concentration. The owner or their planning adviser checks the street before any layout is drawn, because a refusal on concentration cannot be designed away inside a Wallington house.

Housing in Wallington

By the valuation list's count, Wallington holds about 7,270 homes, 55% houses and 45% flats; by age, 30% were built before 1919, 28% between the wars and 42% since 1945.

Which licence a Wallington shared house needs

Every HMO in Wallington now needs a licence of some kind. GOV.UK defines a large HMO as one rented to 5 or more people who form more than 1 household, which needs a mandatory licence unless it is a flat in a purpose-built block of three or more flats. Below that threshold, Sutton's Additional Licensing Scheme is fully live across the whole borough, so a three or four person shared house needs a licence too. A resident landlord may have up to 2 lodgers before the home counts as an HMO.

The landlord applies for the licence, and Sutton issues licences for up to five years, with renewals recommended at least 60 days before expiry. GOV.UK says renting out an unlicensed HMO can lead to an unlimited fine, so the building work should finish, and be inspected against the conditions, before the first tenant moves in. We build to the licence standards and hand over the certificates the Wallington application asks for.

Room sizes, kitchens and bathrooms in a Wallington HMO

Sutton's HMO standards decide how many lettable rooms a Wallington house can hold. A bedroom with no cooking needs 10 square metres for one occupant and 15 for two. Those fall to 6.51 and 10.22, the national minimum sizes that licences in England must set, only where the house has a communal lounge or a combined kitchen with dining area, and no room under 4.64 square metres may be slept in. Giving up one room to shared living can therefore make the others legal. No more than two people, living as a couple, may share a room.

Every room needs a floor to ceiling height of at least 2.3m, except existing attic rooms. A shared kitchen serves no more than five people, so a six person house needs a second kitchen or a larger split layout. Each sharer needs a shared bathroom within one floor of their letting. We draw these counts onto the plan before any partition goes up, because a room that misses by a small margin cannot be let in Wallington.

Fire safety, sound and energy in a Wallington shared house

Fire safety in a Wallington HMO follows the LACORS Housing Fire Safety Guidance, which Sutton's Residential Enforcement Team has adopted. In practice that means fire doors with self-closers on bedrooms and kitchens and a protected escape route down the stair to the front door. It also means an interlinked detection and alarm system suited to the size of the house, and emergency lighting where the escape route needs it. Sutton does not accept a building notice for HMOs.

Sharers live on top of each other, so sound between lettings matters for complaints and for keeping tenants. We add insulation and resilient ceilings between rooms and floors where the layout places a bedroom under a kitchen. Energy counts too: since 1 April 2020 landlords cannot let or continue to let a property covered by the MEES Regulations with an EPC below E without a valid exemption. Heating and insulation are specified to clear that in each Wallington house.

• Service holes sealed so each bedroom and the kitchen stay separate fire compartments
• Snagging before the council's licence inspection
• Small HMO conversions for three to six sharers

VOA Council Tax stock of properties, March 2025, for Wallington North and Wallington South. Counts rounded by the VOA.

Useful next reading for a hmo conversions project in Wallington: bathroom renovation in Wallington, hmo conversions across Sutton, bathroom fitting in London, what a kitchen fit covers, our London hmo conversions page and Small Bathroom Ideas.

Working With GS Renovation in Wallington

An HMO conversion is judged twice: by planning, then by the licence inspection. We build to the layout and standards the landlord or their agent has settled, and mark every room size and ceiling height on site before partitions go up. Fire doors, detection and escape routes go in the order the building control inspector needs to see them. A registered electrician certifies the alarm and wiring, and you get one programme for the whole Wallington house.

• Kitchens and bathrooms counted against the council's amenity standard
• Paperwork and certificates handed over for when you sell
• 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).