HMO Conversions Notting Hill

HMO conversion in Notting Hill is mostly about licensing and the Royal Borough's own standards. Kensington and Chelsea licenses every privately rented home shared by three or more people in two or more households sharing facilities, and its local HMO standards sit above the national minimum. In a stucco townhouse that decides how many lettable rooms there are, where the kitchens go and how the stair is protected. We build to the licence conditions your agent obtains and the standards the inspector checks.

In Notting Hill, 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 Notting Hill: 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.

Licensing a shared house or flat in Notting Hill

Kensington and Chelsea licenses every privately let home shared by three or more people in two or more households with shared facilities. Its Additional scheme, in place since 1 June 2023, picks up every HMO the Mandatory scheme misses. Mandatory licensing takes five or more occupiers in two or more households, except that a purpose-built flat in a block of more than two self-contained flats is licensed under Additional instead. In a street of converted townhouses, that difference decides which application the landlord makes.

So a shared Notting Hill flat let to three sharers from two or more households needs a licence here, even though mandatory licensing alone would not catch it. The landlord or their agent applies, and the licence sets conditions on the property. Our part is the building work that meets those conditions: room layouts, kitchens, bathrooms, fire doors, alarms and escape routes, finished before the inspection and documented so the licence file has the evidence it needs.

Housing in Notting Hill

The Council Tax list puts Notting Hill at about 12,530 homes, 76% flats against 24% houses; 75% went up before 1919, 7% between the wars and 17% after 1945.

Room sizes under the borough's own HMO standards

The borough's own HMO standards set the room sizes in Notting Hill, and they sit above the national minimum. The Royal Borough's guide for shared houses and flats in multiple occupation wants a sleeping room of at least 8.5 square metres for one person and 11 square metres for two, and a kitchen no smaller than 5.5 square metres. A room can never hold more than two people, whatever their ages. They sit above the national minimum sleeping room sizes that every licence carries as mandatory conditions: 6.51 square metres for one adult, 10.22 for two, and no sleeping room under 4.64. Plan to the local figures from the start.

In a Notting Hill townhouse those figures often decide the layout before anything else. Front rooms usually pass easily, but back addition rooms and half landings can fall short, and a small galley may not reach the kitchen standard. Bathrooms have minimums too: a bath of at least 1600mm by 700mm or a shower of at least 800mm by 800mm, and at least one WC per four persons no more than one floor from each user where four or fewer share.

Planning for a Notting Hill HMO: Class L, sui generis and protection

Turning a Notting Hill house into a small HMO can be permitted development. Class L of the General Permitted Development Order 2015 permits a change from a Class C3 dwellinghouse to a Class C4 HMO, which the London Plan defines as three to six people. An Article 4 direction can remove that right, so check your address with the council. Class L does not allow one house to become two or more separate C4 HMOs. Above six people the use is sui generis and needs planning permission.

Once an HMO exists, the borough works to keep it. Proposed main modification MM99 to policy HO1 protects HMOs unless the loss of the HMO or its rooms is for one of two reasons. These are upgrading to meet the council's HMO standards with some rooms lost, or a layout that cannot be upgraded to meet them. That matters if you plan to take an existing shared house back to a single home later.

Fire safety, older conversions and energy rules in a Notting Hill HMO

Fire safety is the part of a Notting Hill HMO conversion with the least room for error. The stair becomes a protected escape route, with fire doors and self closers to every room off it, an interlinked detection and alarm system to the grade the licence requires, and fire separation between the kitchen and the escape route. Building regulations Part B covers new work, and the LACORS housing fire safety guidance is the recognised national guide to the standard.

Older conversions in the borough carry an odd status. A building converted into self-contained flats that does not meet the 1991 Building Regulations, with at least a third of the flats privately rented, is an HMO but does not need a licence in Kensington and Chelsea. Energy rules still apply to every letting: the council states it is unlawful to rent out a domestic property rated F or G on its EPC without a valid exemption. Since 1 April 2020 the E minimum has applied to existing lets as well as new ones. Plan insulation and heating into the conversion.

• Hot water sized for several sharers showering at once, with any gas work by a Gas Safe registered engineer
• Sound lining to bedroom walls and party walls
• Thumb-turn bedroom locks that open from inside without a key

VOA Council Tax stock of properties, March 2025, for Notting Hill Gate, Notting Hill West and Notting Hill South. Counts rounded by the VOA.

Work in Notting Hill rarely sits on its own, so you may also want bathroom renovation in Notting Hill, hmo conversions across Kensington and Chelsea, what a main building contractor does, how snagging works at handover, our London hmo conversions page and Renovation Budget & Contingency.

Working With GS Renovation in Notting Hill

An HMO is judged by a licensing officer who measures rooms and tests alarms, so the work has to be right before the inspection. We measure every room at survey, plan the layout to the borough's standards, then build the fire protection, kitchens and bathrooms in that order. We work from the licence conditions your agent obtains and any planning consent your designer secures, and hand over the certificates and records the licence file needs.

• En-suites placed only where a soil stack can serve them
• Finished and snagged before the council's licence inspection
• Honest updates if a date or a detail has to move

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