Key takeaways
Ref HOW
- Check the proposed occupation before committing to a purchase.
- Planning permission and licensing are separate workstreams.
- National bedroom minimums do not replace local suitability standards.
- Agree fire precautions before construction closes up the building.
- Complete the handover file and ongoing management plan before occupation.
Test the HMO plan before purchase
Begin with a realistic occupation plan: who will live in the property, how many households they will form and which facilities they will share. An ordinary house share can be an HMO from three occupants in more than one household. Five or more occupants commonly brings mandatory licensing into scope, but smaller properties may need a local licence. The number of marketable bedrooms is not the same as an approved capacity.
Before exchange, ask your solicitor to review title restrictions, lease terms where relevant and the permissions needed from a lender or freeholder. Commission a suitable building survey and obtain early views on planning, licensing and fire precautions. Request the seller’s complete records if an HMO is already operating. Treat statements about established use, compliant bedrooms or an easily transferred licence as matters to verify, not assumptions on which to base the purchase.
Build a feasibility budget around the actual layout and required works, including professional advice, application fees, contingency, commissioning and ongoing management. Do not invent income from a room whose use has not been assessed. This England guide is checked October 2026 and follows the project from purchase to first occupation. A planning professional, council officer, competent fire assessor and solicitor have different roles; involve each where their expertise is needed.
Resolve planning use and Article 4
For planning purposes, class C4 commonly covers small HMOs occupied by three to six people in the relevant shared-house arrangement. A change from a C3 dwellinghouse to C4 may benefit from permitted development rights, but an Article 4 direction can remove those rights. Check the local planning authority’s map, direction wording and effective date for the precise address. A licensing-area map cannot answer the planning question.
An Article 4 direction is not itself a universal ban on HMOs. It means the affected change needs a planning application rather than reliance on that permitted development route. Local planning policies then matter to the decision. Larger HMOs generally fall into sui generis use and need separate planning consideration. Extensions, external alterations, protected buildings and conditions on an existing permission can introduce further requirements even where the occupation proposal looks straightforward.
For an existing HMO, assemble planning permissions, approved plans, conditions and evidence of the actual historic use. Ask a planning professional whether a lawful development certificate or another application is appropriate if the position is uncertain. An HMO licence does not establish planning lawfulness, and planning permission does not guarantee licensing approval. Resolve both tracks before relying on a purchase strategy that depends on a particular number of occupants.
Confirm the licensing route and proposed capacity
Check whether the intended property needs mandatory HMO licensing, falls within an additional licensing designation or is instead affected by selective licensing. Mandatory licensing generally concerns at least five people in two or more households with shared facilities, subject to building tests and exceptions. Additional schemes can include smaller HMOs. Selective schemes concern designated rented housing more broadly. Use the council’s current documents for the address rather than a generic borough summary.
Contact the housing licensing team with a clear floor plan and proposed occupation before finalising the refurbishment specification. Ask for current space and amenity standards, application documents, inspection arrangements and published conditions. Explain any converted flats or mixed-use parts accurately. Agree internally who will be the proposed licence holder and manager, and make sure they can actually deliver repairs, inspections and emergency responses once tenants move in.
Licences are property-specific, are not transferable and last for no more than five years. A purchaser needs to establish their own application position rather than adopting the seller’s paperwork unchanged. Submit the information and fees required for a complete application and confirm its status with the council. If you intend occupation while a decision is pending, obtain address-specific advice about the application and legal position instead of assuming every online submission is sufficient.
Measure bedrooms and design a usable layout
National conditions for licensed HMO sleeping rooms set minimum areas of 6.51 square metres for one person aged over 10, 10.22 square metres for two people aged over 10 and 4.64 square metres for one child under 10. Areas with ceiling height below 1.5 metres are excluded. Rooms below 4.64 square metres cannot be used as sleeping accommodation under these conditions. Measure carefully, especially where loft slopes make estate-agent floor areas misleading.
These national figures are not a complete design standard or a guarantee of acceptance. Councils can require higher local standards when assessing suitability, and overall occupation depends on facilities, shared space and the building’s arrangement. Check the local standards before dividing rooms or ordering furniture. A bedroom needs a workable arrangement for sleeping, storage and access; a floor area calculation alone will not identify every problem with a proposed layout.
Prepare dimensioned existing and proposed plans showing room uses, doors, windows, stairs, kitchens and bathrooms. Test furniture positions and circulation without obstructing escape routes or access to controls. Seek early advice where a room is reached through another room or where a conversion changes the escape arrangement. Redesign on paper before construction, because discovering that a planned bedroom is unsuitable after decoration can disrupt the whole occupation and licensing programme.
Match amenities to the intended occupation
The licensing suitability framework considers whether the house has adequate facilities for the people who will live there. Councils publish amenity standards for matters such as kitchens, washing facilities and toilets. Obtain those standards for the particular authority and letting arrangement instead of applying an internet rule about one bathroom ratio everywhere. The assessment can depend on numbers, layout and whether facilities are shared or provided within individual units.
Design kitchens for simultaneous everyday use, with suitable preparation space, cooking provision, food storage and safe access. Plan bathrooms around reliable hot water, ventilation and ease of cleaning. Check heating capacity and whether the water system can support the expected demand before simply adding another shower. Qualified designers and installers should address technical sizing and installation; photographs of attractive fittings do not demonstrate that an occupied house will function properly.
Allow for shared living space where required by local standards, plus practical laundry and waste arrangements. Locate bins so that tenants can use them without storing refuse in escape routes, and check the council’s collection arrangements. Specify durable, maintainable finishes and accessible service points. Include ventilation and moisture control in the design, particularly when adding occupancy or insulating the building, rather than treating condensation as an issue tenants must solve after move-in.
Design fire precautions before refurbishment
Arrange a competent fire risk assessment suited to the actual HMO, its height, layout and occupants. Government sleeping-accommodation guidance covers relevant common areas of HMOs under the Fire Safety Order; housing legislation also matters to the accommodation. Establish the applicable responsibilities and fire strategy with an experienced assessor and the council. A generic alarm package bought before the layout is assessed may leave important escape or compartmentation problems unresolved.
The assessment should inform escape arrangements, doors and separation, detection, alarm coverage and any emergency lighting or other equipment needed. The precise specification depends on risk and applicable requirements, not merely the label HMO. Keep stairs and exits clear and consider how locks will allow safe escape. Ask the assessor to explain any problematic inner-room arrangements, higher-risk spaces or alterations before builders close walls and ceilings or complete the decoration.
Coordinate the fire design with building control and competent installers where the works require approval. Record the agreed specification, obtain installation and commissioning information and address defects before occupation. For common areas within the Fire Safety Order, responsible-person duties include recording the assessment and fire safety arrangements. Plan testing, maintenance and resident information as part of the handover: a completed assessment does not maintain a door closer or keep an exit unobstructed.
Coordinate services, reports and remedial work
Where gas installations are provided, arrange the required safety checks through a Gas Safe registered engineer. Landlord gas safety checks are annual, and the record should be supplied to incoming tenants before occupation. Existing tenants normally receive the new record within 28 days of the check. Coordinate any heating changes with the energy and fire design, and retain commissioning and operating information rather than collecting only a certificate with no supporting work history.
For electrical installations, establish the applicable inspection and testing requirements, obtain the appropriate report from a qualified person and resolve required remedial work. HMO management regulations include electrical inspection duties, so a freshly decorated room is not evidence that its wiring is suitable. Supplied appliances also need to be safe. Ask the electrician about the completed installation and any report limitations before treating the electrical part of the project as finished.
Plan smoke and carbon monoxide detection against the applicable HMO licensing requirements and fire assessment. The wider rented-home alarm framework includes smoke alarms on relevant storeys and carbon monoxide alarms in living accommodation containing fixed combustion appliances, excluding gas cookers, with specific treatment for licensed HMOs. Do not rely on older guidance referring only to solid fuel. Confirm the relevant regime, test arrangements and fault-reporting process for this property before handover.
Control construction and assemble the handover file
Turn the agreed design into a written works schedule with a named owner for each outstanding requirement. Identify dependencies such as planning decisions, building control inspections, first-fix services and fire door installation. Ask competent contractors to flag variations before making changes that affect room sizes or escape arrangements. Keep a current plan on the job so that the licensing application, construction work and final room numbering remain consistent.
Inspect the finished property against the specification rather than relying on a general statement that the refurbishment is complete. Check that doors operate properly, fans work, heating controls are understandable and shared facilities match the intended occupation. Gather completion evidence, installation records, photographs and any approvals needed for the work. If the council identifies conditions or further works, record the deadlines and deal with uncertainties promptly instead of leaving them in an email inbox.
Create one controlled handover file containing plans, licensing correspondence, fire documentation, service reports, appliance instructions and maintenance contacts. Resolve the EPC position for the actual letting arrangement: individual shared-house rooms do not normally need separate EPCs, but letting or selling a whole dwelling can trigger requirements. Ask an assessor where the building or letting structure is unclear, and check the applicable minimum energy standard rather than assuming an HMO licence answers it.
Prepare the first letting and ongoing management
Before committing to an occupation date, verify the licensing and planning position, permitted numbers, outstanding safety actions and the readiness of every advertised room. Have a solicitor or competent letting adviser check the tenancy documentation and current information requirements. Checked October 2026: tenancy reform implementation is date-sensitive, so do not reuse an old assured shorthold tenancy pack without checking current official guidance and commencement arrangements for the tenancy being offered.
At move-in, provide the relevant safety records and clear instructions for heating, ventilation, waste, shared facilities and emergency reporting. Explain the fire procedure agreed for the building and demonstrate essential controls. Record the condition and test the relevant alarms under the applicable requirements. Tell residents how to report defects and who responds outside office hours, so a faulty door, leak or alarm is not left unresolved because everyone assumes another housemate has reported it.
Budget and diary ongoing inspections, servicing, cleaning of common parts where arranged, licence review and timely repairs. HMO management regulations apply beyond the first tenancy and can affect unlicensed HMOs too. Peachtree Maintenance can coordinate setup works and planned maintenance, while the council and relevant professionals determine regulatory approvals. Review occupation when people change, and keep the approved capacity visible to whoever handles enquiries so that future lettings do not undo the original compliance plan.
Frequently asked questions
01Should I buy furniture before the plans are agreed?
Wait until room uses, dimensions and circulation are settled. Furniture that restricts safe movement can undermine an otherwise carefully planned layout.
02Can I turn the shared lounge into another bedroom later?
Not without reviewing the approved occupation, local space standards and any planning or licence conditions. Get advice before advertising the additional room.
03Who should coordinate the different professionals?
Appoint one project lead to maintain the action list and current plans. That person coordinates information but does not replace the specialist judgement of the council, assessor or solicitor.
04Does every HMO conversion require the same alarm system?
No, the appropriate system depends on the building and its assessed risk. Have a competent person specify it alongside the escape strategy and applicable requirements.
05What if works finish before the paperwork?
Do not equate practical completion with readiness to let. Check outstanding approvals, application status, safety actions and tenancy documents before confirming occupation.
Sources
About the author
Peachtree Maintenance compliance team
Written by the team that arranges certificates, inspections and repairs for Peachtree Maintenance clients. General information for England, not legal advice. Last reviewed 20 October 2026.