HMO Conversions Islington

An HMO conversion in Islington is shaped more by licensing than by planning. Islington Council says there are currently no planning restrictions on using a family home as an HMO for fewer than seven sharers, but its licensing reaches down to 3 unrelated people in 2 or more households. The council's own HMO standards then set room sizes, kitchens per sharer, ceiling heights and bathroom space. We build HMO conversions and licensing upgrades to those standards and to the licence conditions the landlord is given.

If the building is listed, the works themselves are a separate question: anything that affects its character, inside or out, needs listed building consent from Islington Council, and carrying it out without consent is a criminal offence.

In Islington, 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 Islington: 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 for an Islington HMO: no Article 4, but a limit

Islington Council says a family house can currently become a shared HMO for up to six people with no planning restriction, which matches the national Class L right to change from C3 to C4. The London Plan asks boroughs weighing an Article 4 direction on that change to consider the strategic importance of HMOs, and Islington has not restricted it on the council's own statement. So a small Islington HMO usually starts with the licence and the building work, not a planning application.

The limit is seven. Islington says an HMO housing seven or more people needs planning permission, and the London Plan glossary classes an HMO for more than six people as sui generis. Class L also does not permit one house to become two separate C4 HMOs. Islington Policy H10 supports new small-scale HMOs where they do not cause significant adverse amenity impacts on the surrounding neighbourhood, so the effect on the street counts.

Housing in Islington

For Islington the Council Tax list gives about 112,190 homes; by type 85% flats and 15% houses, by age 50% post-war, 4% interwar and 43% older than 1919.

Islington's mandatory and additional HMO licensing

Mandatory licensing in Islington covers all houses or flats with 5 or more unrelated people in 2 or more households sharing a kitchen, bathroom or toilet. Additional licensing then reaches down to houses or flats with 3 or 4 unrelated sharers from 2 or more households. So a shared let of three or more unrelated people from 2 or more households generally needs a licence here, and the licence conditions, not only the planning position, set the building work. The landlord applies for the licence, and we build to its standards.

Additional licensing in Islington also covers two cases that surprise owners. It includes flats let to 3 or 4 sharers in a purpose-built block not caught by mandatory licensing. It also catches section 257 HMOs: whole buildings of self-contained flats in one ownership, all tenanted, whose conversion falls short of the Building Regulations 1991. For those buildings the licensing works often mean fire separation between flats, upgraded doors and a linked alarm.

Room sizes, kitchens and bathrooms under Islington HMO standards

Where the kitchen is shared in its own room, Islington's HMO standards want each single letting room to reach 8 square metres and each double 11. Shared kitchens grow with the household: 5.5 square metres for up to 3 people, 7.5 for 4 to 5, 9.5 for 6 to 7 and 11.5 for 8 to 10, with a separate kitchen for every 5 residents sharing. They sit above the national minimums that have been mandatory licence conditions since 2018: 6.51 square metres for one adult, 10.22 for two, and no sleeping room under 4.64. Those numbers decide how many rooms an Islington house really yields, so we lay the plan out against them before any partition goes up.

Height and bathroom space are the other tests in Islington. Under the standards, at least 50% of a room's floor area must have 2.1m or more of headroom, which bites in rooms in the roof and some lower ground floors. Room areas count usable floor only: under the national licence rules, floor where the ceiling is lower than 1.5m is left out, and fixed boxing or built-in cupboards reduce the area too. Each bathroom and toilet must leave a 700mm by 700mm space clear beside the bath or shower for drying and changing, which can decide whether a bath or a shower tray fits a small back addition. We set out sanitaryware on the floor before first fix.

Fire safety, energy and the cost of getting an Islington HMO wrong

Fire safety is the heaviest part of an HMO conversion in Islington. The work follows Part B of the Building Regulations, the licence conditions and LACORS housing fire safety guidance, the recognised guide. In practice that means fire doors with self closers to each letting room and the kitchen, a protected escape route down the stair, and interlinked smoke and heat detection. We also improve sound insulation between lettings, because separate households keep separate hours in a terraced house.

Energy and enforcement close the job. Islington gives a licence fee discount where the property has an EPC rating of A, B or C, and MEES bars letting below E without an exemption. Letting without the right licence carries risk: Islington may fine each person responsible per offence, and a Rent Repayment Order can claw back as much as 24 months of rent. Finishing the licensing works before the inspection is part of avoiding that exposure.

• Self-closing fire doors and frames to every bedroom and the kitchen
• Separate WCs and wash basins to the amenity standard
• Sound lining to bedroom walls and party walls

VOA Council Tax stock of properties, March 2025, for all 23 statistical areas in Islington. Counts rounded by the VOA.

When comparing hmo conversions in Islington with other work, it helps to read bathroom renovation in Islington, our Islington area guide, builders in Islington, what a kitchen fit covers, our London hmo conversions page and Central Heating Installation Cost.

The GS Renovation Difference in Islington

An HMO has to pass a licence inspection, so the build runs to a checklist: room plan against the standards, fire strategy and doors, detection, kitchens and bathrooms per sharer, then finishes. We work from the licence conditions and any drawings you hold, give you one programme and a written quotation after a site visit, and keep the fire doors, alarm certificates and electrical certificates together for the landlord's application and the inspector. A registered electrician certifies the installation, and a registered gas engineer does any gas work.

• Fire doors, closers and seals fitted to every door on the escape route
• A written scope and programme agreed before work starts
• En-suites placed only where a soil stack can serve them

Reviewed jobs near Islington

1 MyBuilder review from Islington, with each customer's own job title:

• Kitchen refit in ex-local authority maisonette, Islington, 8 Jul 2022 (5 out of 5)

Read all 31 on our reviews page.

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