HMO Conversions Morden
House to HMO conversions and licence upgrades in Morden, fire doors, detection and shared amenities built to the council's licence standards.
- Rated 4.9 from 31 reviews on MyBuilder
- London guide: £40,000 to £75,000
- Free site survey, itemised quote
HMO conversion in Morden starts with planning, because permitted development for a small HMO no longer applies anywhere in the borough of Merton. Merton's immediate Article 4 Direction covering 13 wards, including Lower Morden, started on 24 March 2026. With 75% of homes across the statistical areas covering Morden, Lower Morden and St Helier North being houses, the candidates are interwar terraces and semis being let as shared houses. We build the fire safety, kitchens and bathrooms to the approved occupancy and the licence standards the landlord has to meet.
In Morden, 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 Morden: 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
| Work | Indicative 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
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HMO Article 4 across Merton, including Lower Morden since 2026
Turning a Morden house into a small HMO, shared by three to six people, now needs planning permission. Nationally, Class L lets a dwellinghouse change to a small HMO without an application, and in Merton that right is gone borough wide. Its immediate Article 4 Direction for small HMOs in 13 wards, including Lower Morden, started on 24 March 2026, following a direction covering seven wards from 17 November 2022. An immediate direction must be confirmed to stay in force, so check its status.
Larger shared houses were never permitted development. In the London Plan glossary, an HMO of three to six people is Use Class C4, while one for more than six is Sui Generis, and a change to it needs planning permission. Class L also never allowed one house to become two separate HMOs. For a Morden landlord the order is fixed: the planning decision, then the build, then the licence application where one is needed before tenants move in.
Housing in Morden
Count the homes in Morden and you get about 9,990: 17% built since 1945, 81% between the wars and 2% before 1919, with flats at 25% and houses at 75%.
Licensing schemes that apply to a Morden HMO
Merton requires a mandatory HMO licence once 5 or more people in more than one household share a house. A purpose-built flat in a block of 3 or more flats falls outside that rule. A smaller shared house may still need an additional licence, since Merton's Cabinet approved selective and additional landlord licensing to start in September 2023. The landlord applies for the licence, and we build to the conditions it sets.
Licensing is not optional paperwork. Letting an HMO without the licence it needs risks an unlimited fine, according to GOV.UK, and a licence can carry conditions on the number of occupants, fire safety and amenities. For a Morden conversion that means the licence standards shape the drawings from the start. A room that fails the size rule, or a kitchen too small for the number sharing it, cannot be fixed cheaply once the house is finished and let.
Room sizes and amenities in a Morden HMO
Merton publishes room and amenity standards for shared houses, and they fix the layout of a Morden shared house. A room for one person over 10 must be at least 6.51 square metres and for two people at least 10.22, while anything under 4.64 square metres is not a bedroom at all. Floor below a ceiling of 1.5 metres or less is left out of the measurement, which rules out the low end of a sloping ceiling as bedroom floor space.
In Merton one shared kitchen is for 5 persons at most, sized at 2m2 or more for each of them, with one worktop to every three sharers. A house for six to 10 occupants needs 2 bathrooms and 2 toilets as a minimum, one of the toilets separate with its own wash hand basin. In a Morden terrace a second bathroom has to fit somewhere the waste can reach the soil stack, so those runs are planned early.
Fire doors, alarms and escape in a Morden shared house
Fire safety is often the largest part of the build in a Morden HMO. Councils generally assess it against the LACORS housing fire safety guidance, and building regulations Part B applies where the work is a material change of use. In a two storey interwar house that usually means a protected escape route down the stair to the front door. Every room that opens onto it gets a fire door with a self closer, and an interlinked mains alarm covers the rooms and the hall.
Sound and energy come next. Bedrooms that share a wall or floor with another letting benefit from added insulation, because tenants keep different hours. Since 1 April 2020 a landlord cannot let, or continue to let, a property covered by the MEES Regulations below an EPC rating of E without a valid exemption. So loft insulation, heating controls and efficient lighting go in while the Morden house is open for the fire works, rather than as a second visit after the tenants move in.
- Hard-wearing floors, finishes and decoration for a let house
- Large HMO conversions for seven or more, once planning is granted
- Service holes sealed so each bedroom and the kitchen stay separate fire compartments
VOA Council Tax stock of properties, March 2025, for Morden Central, Lower Morden and St Helier North. Counts rounded by the VOA.
The GS Renovation Difference in Morden
An HMO has to satisfy the planning consent, the licence and the fire standard at once, and they all land on the same drawings. We build to the approved layout and occupancy, fit the fire doors, detection and escape route to the specification, and size kitchens and bathrooms to Merton's amenity rules as your designer shows them. A registered electrician certifies the alarm and wiring. You get a written quotation after a site visit and a written programme, and the certificates the licence application needs.
- Site left safe and secure at the end of every day
- Article 4 and licence position checked before a room is priced
- Every bedroom measured against the national minimum room sizes
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
Saaid is the best craftsman I have worked with. He knows what he is doing from the very beginning. He has a great knowledge of construction…
FAQ
Frequently Asked Questions about HMO Conversions Morden
Why do HMO conversion quotes in Morden 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 Morden quotes against the licence standards.
Does a small HMO in Lower Morden need planning permission?
Yes. Merton's immediate Article 4 Direction for small HMOs in 13 wards, including Lower Morden, started on 24 March 2026, and Merton has removed the permitted development right for small HMOs across the whole borough. The owner or their agent applies, and we build to the approved layout.
When does a Morden HMO need a mandatory licence?
Once 5 or more people from more than one household live there, unless it is a purpose-built flat in a block of 3 or more flats. Merton's Cabinet also agreed selective and additional landlord licensing from September 2023, so a smaller Morden shared house may need a licence too. The landlord makes the application, not the builder.
What is the smallest bedroom allowed in a Morden HMO?
4.64 square metres, and only for a child under 10. Below that a room cannot be a bedroom. An adult needs at least 6.51 square metres and two people over 10 need 10.22, counting only floor space where the ceiling is higher than 1.5 metres.
How big must a shared kitchen be in a Morden HMO?
Under Merton's amenity standards one shared kitchen is for 5 persons at most, with 2m2 or more of kitchen for each. Worktops go in at one to every three people sharing. A house for more than five usually needs a second kitchen, which we plan with the drainage and extraction in mind.
Can a room with its own kitchenette count as a letting in a Morden HMO?
Yes, if it is big enough. Merton's amenity standards set a floor of 13m2 for a one person letting that has its own cooking and washing facilities, and 20.5m2 for two. That usually suits a large front room in an interwar house, not a small back bedroom.
Can a Morden HMO be converted back into a family house?
It may need planning permission. Merton's Policy H11.5 pushes back against losing HMOs, bedsits and student housing overall unless set conditions are met, and London Plan Policy H9 says HMOs of a reasonable standard should generally be protected. The owner's planning adviser checks the position for the address first.
What counts as an HMO in Morden?
Under the GOV.UK definition, a house is an HMO when at least 3 people from more than 1 household rent it and share a kitchen or bathroom. It becomes a large HMO when 5 or more people forming more than 1 household rent it, and that is the one needing a mandatory licence.
What fire safety work does a shared house need?
A protected escape route, fire doors with self closers onto it, and an interlinked alarm with detection, as set out in the LACORS housing fire safety guidance that councils use. The exact level depends on the number of storeys and occupants, and the licence conditions confirm it. We fit to the specification on the approved drawings.
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