HMO Conversions Coulsdon

House to HMO conversions and licence upgrades in Coulsdon, fire doors, detection and shared amenities built to the council's licence standards.

An HMO conversion in Coulsdon needs planning consent before it needs builders. Croydon's Article 4 direction came into place on 28 January 2020, and since then a new shared house for 3 to 6 people has needed planning consent. Smaller HMOs across the borough also come under Croydon's Additional HMO licensing, which began on 25 September 2026. The landlord or their agent handles the consent and the licence, and we build the rooms, kitchens, bathrooms and fire safety to the standard the licence expects.

In Coulsdon, 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 Coulsdon: 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.

Price guide

WorkIndicative range
Light HMO conversion, London, 4 to 6 tenants, construction only (Mayfair Studio)£40,000 to £75,000
Full HMO conversion with en-suites, London, 5 to 6 beds (Mayfair Studio)£90,000 to £150,000
5-bed HMO conversion, London and South East (LetCompliance)£35,000 to £60,000
Fire safety works, typical 5-bed HMO, UK guide (LetCompliance)£5,000 to £9,500
En-suite added to one bedroom, London (Mayfair Studio)£3,500 to £8,000 per room
Second shared bathroom, UK guide (LetCompliance)£4,000 to £9,000

Indicative ranges from published cost guides (Mayfair Studio and LetCompliance, 2026), not a quotation. Each row names its source and whether it is a London, UK or England-wide figure. Prices checked September 2026.

Quick estimate from published guides

Guide range: choose above

A tiled bathroom by GS Renovation with a bath, a glass bath screen and a wall-hung WC
A full bathroom with a wall-hung WC. The council's amenity standard sets how many of these an HMO needs for the people living in it.

Planning consent for a Coulsdon HMO under Croydon's Article 4

In Coulsdon, as across Croydon, the permitted development route for a small HMO is closed. The national right, Class L, lets a C3 dwellinghouse become a C4 house in multiple occupation without an application. Croydon's Article 4 direction takes it away: a 3 to 6 person HMO set up after 28 January 2020 needs planning consent. An HMO for 7 or more has needed consent for far longer, separately from the direction, and the London Plan classes it as sui generis.

Planning status feeds straight into licensing in Coulsdon. When it licenses an HMO, Croydon looks at whether the use has planning consent, and a house without it may be refused or given a short licence, commonly of one year. Under Policy DM10.1 the council also weighs noise, refuse collection and extra car parking when an HMO is proposed. We price the build from the drawings the owner's designer submits, and start once consent is in place, so the building and the paperwork line up.

Housing in Coulsdon

On the valuation list Coulsdon counts about 7,540 homes, 27% flats and 73% houses; 8% predate 1919, 30% are interwar and 62% post-war.

Mandatory and Additional HMO licensing for Coulsdon landlords

Every HMO in Coulsdon now needs a licence of one kind or another. A house shared by 5 or more people not living as a single household, using common facilities, sits under the Mandatory HMO Licensing Scheme. Below that, Croydon's Additional HMO licensing has covered the whole borough since 25 September 2026, catching any let where 3 or more people make up 2 or more households. Croydon decided on 9 July 2026 to push that start back from 1 September 2026.

An Additional licence normally lasts 5 years, less where Croydon has concerns about compliance or management. Letting an HMO without the licence it needs risks an unlimited fine, according to GOV.UK. The landlord applies for the licence, and the licence sets conditions on rooms, amenities and fire safety. We build to those conditions, and where a house is already let as an HMO we can carry out the upgrades an inspection identifies.

Room sizes, kitchens and bathrooms in a Coulsdon HMO

Croydon's bedsit HMO standards fix the layout of a Coulsdon HMO before a wall is moved. Every habitable room, bathroom and WC must reach 2.3m from floor to ceiling, and a bedroom sleeps 2 persons at most. A room carved out by partitions just to reach 10m2 is refused where its shape or layout does not work. National minimums also apply as licence conditions: 6.51 square metres for one adult, 10.22 for two, and no sleeping in a room under 4.64 square metres, which is why we measure each room on the drawings rather than on site.

Amenities follow the number of occupants. Croydon's bedsit standards cap a shared kitchen at 5 users and wants it no more than a floor away from their rooms, so a house for more than five usually gets a second kitchen. Bathrooms work on ratios, with 2 needed for 6 to 10 persons, each no more than a floor from its users. Once 6 or more share, every letting also gets a wash-hand basin of its own.

Fire safety, sound and energy in a Coulsdon shared house

Fire safety is the core of the build in a Coulsdon HMO. Among the measures Croydon can ask of an HMO is interlinked, mains wired fire detection through the whole house. With it go self-closing fire doors to bedrooms and kitchens, a protected stair to the front door, and fire stopping wherever pipes and cables pass. The LACORS guide on housing fire safety sets the usual benchmark, while the building regulations, Part B for fire, govern the construction work.

Sound and energy matter for tenants who live side by side. Bedrooms against bedrooms, with insulated stud walls and upgraded ceilings, cut complaints between lettings. The energy rating counts too: Croydon states it is unlawful to rent out a domestic property rated F or G unless an exemption applies, and it gives a discount off part of the licence fee where the EPC is B or above. Insulation and heating upgrades belong in the same programme.

  • Hard-wearing floors, finishes and decoration for a let house
  • Protected escape routes through the hall, stair and landings
  • Separate WCs and wash basins to the amenity standard
Service areaCoulsdon · CR5
Local authorityCroydon Council
Part ofSouth London (Outer London)
Typical homesPost-war and 1930s semis and detached houses
Housing stock8% built before 1919, 30% interwar, 62% post-war; 27% flats, 15% terraced, 48% semi-detached or detached, 10% bungalows
Also covered nearbyPurley, Wallington, Carshalton and Croydon

VOA Council Tax stock of properties, March 2025, for Coulsdon and Old Coulsdon. Counts rounded by the VOA.

Trusted HMO Conversions in Coulsdon

An HMO has to satisfy planning, the licence and the building regulations at once, and the drawings, the build and the inspection all have to agree. We build to the approved layout and the licence standards, coordinate the registered electrician and the fire alarm installer, and fit fire doors, detection and fire stopping before finishes cover them. You get a written programme showing when each room is ready, and one contact to answer the licensing officer's building questions.

  • One point of contact from first survey to handover
  • Kitchens and bathrooms counted against the council's amenity standard
  • Finished and snagged before the council's licence inspection
30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
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Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

★★★★★
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
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★★★★★
Giorgio is an excellent and intelligent workman, and with very reasonable prices! He installed a kitchen extractor fan in a complicated situation…
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George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
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FAQ

Frequently Asked Questions about HMO Conversions Coulsdon

Why do HMO conversion quotes in Coulsdon vary?

Because they rarely build to the same standard. One includes fire doors, interlinked detection, and bathrooms and a kitchen sized to the council's amenity standards; another prices a lower specification that may fail inspection. The published figure of £40,000 to £75,000 for a light conversion (Mayfair Studio, 2026) is a starting point. Compare Coulsdon quotes against the licence standards.

Does a Coulsdon house need planning permission to become a small HMO?

Yes. Since 28 January 2020 Croydon's Article 4 direction has required planning consent for a new shared house of 3 to 6 people. Nationally, Class L lets a family home become a small HMO without an application, but in Croydon that right has gone. The owner or their agent applies.

Does a three person shared house in Coulsdon need a licence from 2026?

Yes, if the three people form 2 or more households. Croydon's Additional scheme, live across the borough since 25 September 2026, is aimed at the HMOs with 3 or 4 persons that mandatory licensing misses. Houses of 5 or more people not living as one household, sharing facilities, need a mandatory licence instead. The landlord applies, not the builder. The mandatory scheme stops short of flats in purpose-built blocks of three or more self-contained flats, which only an additional licensing scheme can catch.

How many kitchens does a Coulsdon HMO for seven tenants need?

Two. Croydon's bedsit standards cap each shared kitchen at 5 users, placed no more than a floor from their rooms. Seven tenants also make it a sui generis HMO, which Croydon notes has long needed planning consent, separately from the Article 4 direction. The second kitchen is best planned on the drawings.

How many bathrooms does a six person Coulsdon HMO need?

Two. The Croydon ratio is 2 bathrooms or shower rooms for 6 to 10 persons, each no more than a floor from the people using it. With 6 or more sharing, every letting also needs a wash-hand basin. Plumbing for basins and a second bathroom is easiest to run before partitions and ceilings are closed.

What fire alarm does a Coulsdon HMO need?

Interlinked, mains wired detection covering the whole house is one of the measures Croydon can require of an HMO. The exact grade, with fire doors and the escape route, follows the licence conditions and LACORS housing fire safety guidance. A specialist installer fits and commissions the system, and we build the wiring routes and fire stopping around it.

Can one Coulsdon house be split into two separate HMOs?

Not under permitted development. Class L stops short of turning one former dwellinghouse into two or more C4 HMOs. And in Croydon a new 3 to 6 person HMO has needed planning consent since 28 January 2020 regardless, so the idea is tested through a planning application before any building work.

What happens if a Coulsdon HMO has no planning consent?

The licence is at risk: Croydon weighs planning status when licensing and may refuse, or grant a short term, commonly of one year. Letting an HMO that lacks a required licence can bring an unlimited fine, GOV.UK warns. Settling planning first protects both the licence and the building investment, so we start work once consent is confirmed.

Can a bedroom be partitioned to reach the minimum HMO size?

Only if the result is a usable room. A partition put in just to reach 10m2 is refused by Croydon where the room's shape or layout is impractical. Its standards also want 2.3m or more from floor to ceiling. We check room shapes, heights and door positions on the drawings before building any partition.

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