HMO Licensing Explained: What Investors Need to Know Before Buying
August 17, 2026
HMO investments are becoming more and more regulated and, in all honesty, as a business, we support it massively.
Slum landlords and rogue operators should not be allowed to provide poor-quality accommodation simply because they have found a way of squeezing another bedroom into a property. These are people’s homes. The people renting these rooms live, sleep, cook, work and spend a large part of their lives there, so it is about time the standards bar was raised across the sector.
For serious HMO investors, increased regulation should not be something to fear. If anything, higher standards make it harder for poor operators to compete with landlords who are prepared to build and manage their properties properly.
There is a catch, though. HMO licensing is not a one-size-fits-all exercise.
The rules differ between England, Wales, Scotland and Northern Ireland, and within England individual local authorities can impose their own licensing conditions, amenity standards and additional licensing schemes. In England and Wales, a property occupied by five or more people forming more than one household and sharing facilities such as a kitchen or bathroom will generally fall within mandatory HMO licensing, while smaller HMOs can also require a licence where the local authority operates an additional licensing scheme.
That local variation matters enormously when you are buying an HMO. A layout that works in one council area cannot automatically be assumed to work five miles down the road.
HMO minimum bedroom sizes
Let’s start with one of the numbers almost every HMO investor will come across: bedroom size.
For licensed HMOs in England, the statutory minimum sleeping-room sizes are:
- 6.51m² for one person aged over 10
- 10.22m² for two people aged over 10
- 4.64m² for one child aged under 10
Any part of a bedroom where the ceiling height is below 1.5 metres does not count towards the statutory floor-area calculation.
For most investors, the first two figures are the relevant ones. A single adult room must therefore provide at least 6.51m² of qualifying floor space, while a room intended for two adults, including a couple, needs at least 10.22m² under the national minimum.
But there is a very important word in that sentence: minimum.
Your local authority can expect more. Councils assess whether an HMO is suitable for the proposed number of occupants and can impose conditions concerning facilities, amenities and occupancy. Manchester City Council, for example, publishes its own HMO standards alongside the national requirements, while Leeds specifically warns that HMO licences are increasingly being refused where communal areas do not provide enough space.
This is why we would never advise buying an HMO based purely on somebody saying, “The bedrooms are all above 6.51m², so you’re fine.”
You might not be.
The communal-space rule that catches investors out
Bedrooms get most of the attention because they are easy to measure. What catches plenty of investors out is the amount and configuration of communal space.
Councils need to be satisfied that an HMO is suitable for the number of people who will occupy it. That assessment goes beyond bedrooms. Kitchens, living rooms, dining areas, bathrooms, toilets, storage and other shared facilities can all affect how many occupants the property can realistically accommodate.
And those standards can change depending on the number of tenants.
You could therefore find a property with six perfectly acceptable bedrooms, yet discover that the council will not license it for six people because the kitchen, dining area or living space is insufficient. Leeds City Council explicitly states that licence applications are increasingly being refused because of a lack of communal space, particularly where living rooms have been converted into bedrooms or open-plan layouts fail to provide the required amenity.
This is one of the reasons HMO due diligence needs to happen before purchase, not once you have the keys.
Adding another bedroom might look brilliant on a spreadsheet. If creating that bedroom removes the communal space needed to obtain the intended licence, however, you have not increased the property’s value. You may have damaged the operating model.
If your plan is to provide the bare minimum, stop right there
If you are entering the HMO market with the intention of providing only the absolute minimum required to get through licensing, we would politely suggest stopping right there.
HMO property investment probably isn’t for you.
Trying to shave every possible pound from a refurbishment, shrinking bedrooms towards their legal limit, buying the cheapest furniture available and treating fire protection or communal facilities as irritating costs is a poor way to operate an HMO.
There is also very little margin for error.
A 6.51m² statutory minimum does not mean we think investors should be designing every single room to exactly 6.51m². Regulations change. Local authority interpretations differ. Properties are measured. Licensing officers inspect them. Tenant expectations develop.
More importantly, good HMOs should be good places to live.
We would much rather create a larger bedroom with proper storage, a decent desk and enough space for somebody to move around comfortably than boast about finding another way of extracting £100 a month from a cupboard-sized room.
Cutting corners is rarely where the long-term money is made.
HMO compliance does not end when the licence is granted
Another misconception is that the licence is the hard part and, once granted, the compliance work is effectively finished.
It isn’t.
For licensed HMOs, GOV.UK states that landlords must send their council an updated gas safety certificate every year, install and maintain smoke alarms and provide electrical-appliance safety certificates when requested. Gas appliances must also undergo a safety check by a Gas Safe registered engineer every 12 months.
Smoke alarms must be installed on every storey containing a room used as living accommodation. Carbon monoxide alarms are required in rooms used as living accommodation containing a fixed combustion appliance, excluding gas cookers, and landlords are responsible for repairing or replacing required smoke and carbon monoxide alarms once a fault has been reported and established.
Not every compliance item operates on a 12-month cycle, which is another distinction worth understanding. Electrical installations in privately rented homes are subject to periodic inspection and testing requirements, commonly at intervals of no more than five years, while fire safety assessments and systems need to be maintained and reviewed according to the property, its use, the applicable legislation and the council’s licensing requirements.
An organised HMO operator therefore needs a proper compliance calendar rather than a folder of certificates that only gets opened when the council sends an email.
Fire safety in an HMO is considerably more involved
Fire safety is one area where buying the wrong property, or converting the right property badly, can become extremely expensive.
Shared and rented accommodation carries legal fire-safety obligations. Depending on the building and its layout, the measures required can include appropriate fire detection and alarm systems, protected escape routes, suitable fire-resisting construction and doors, emergency lighting and properly maintained fire-safety equipment.
Fire doors in particular are there to restrict the movement of fire and smoke through a building. Government guidance stresses the importance of doors closing properly into their frames and the role of self-closing devices, seals and appropriate gaps in maintaining their performance.
The exact specification should be determined for the property rather than copied blindly from another HMO. A three-storey six-bedroom property, a converted building containing bedsits and a smaller two-storey shared house can present very different risks.
That is why competent professional advice during design and conversion is money well spent.
Saving a few hundred pounds on the wrong doors, an inadequate alarm design or poorly considered escape routes is not clever value engineering. It is exposing your tenants, your property and yourself to unnecessary risk.
Buying an HMO with a licence? Be careful
Here is another area where investors can get caught out.
Imagine you are purchasing an existing HMO. The seller tells you:
“Don’t worry, it already has an HMO licence for six people.”
Fine. But that does not mean their licence simply becomes yours.
Under the Housing Act 2004, an HMO licence cannot be transferred from one person to another. A licence can generally remain in force for a maximum of five years, but it relates to the licence holder who has been approved by the local authority.
So do not take the seller’s word for it and assume the licensing question has been dealt with.
Before purchasing an existing HMO, establish what licence currently applies, who holds it, the permitted occupancy, when it expires, what conditions are attached to it and what you will need to do when ownership changes.
This should form part of your pre-purchase due diligence.
The existing licence is still useful evidence. It may tell you a great deal about how the council currently views the property. It simply does not mean you inherit the seller’s permission to operate it.
You also need to be a “fit and proper person”
HMO licensing is not only an assessment of the building.
The council also considers the people responsible for it.
Under the Housing Act 2004, the proposed HMO licence holder must be considered a fit and proper person, and the proposed manager must also satisfy the relevant requirements. The local authority considers matters including offences involving fraud, dishonesty, violence or drugs, certain sexual offences, unlawful discrimination, breaches of housing or landlord and tenant law and failures to comply with applicable approved codes of practice.
The council can also look at whether the proposed management structure is suitable and whether the people involved have an appropriate level of competence.
That tells you something about where the HMO market is heading.
Authorities do not simply want to know whether a property has enough square metres and the correct number of smoke alarms. They want to know who is responsible for running the accommodation and whether that person is capable of doing it properly.
We support that.
Licensing should influence the property you buy
HMO licensing should never be something you investigate after you have agreed to buy.
Before committing to a property, you should understand its proposed occupancy, bedroom dimensions, communal-space requirements, kitchen and bathroom provision, fire-safety implications, local licensing scheme and the council’s own amenity standards.
Planning needs to be checked separately too. HMO licensing and planning permission are not the same thing. An HMO may require a licence yet still have a separate planning problem, particularly in areas covered by an Article 4 Direction. Liverpool, for example, requires planning permission for certain HMO conversions within its Article 4 area, while Leeds also publishes separate planning guidance for HMOs.
Buying first and asking questions later can become painfully expensive.
A property might appear capable of becoming a six-bedroom HMO when viewed on Rightmove. Once room dimensions, communal requirements, fire protection, planning policy and licensing standards have been properly considered, five high-quality rooms may be the correct answer.
Sometimes the right answer is not to buy the property at all.
Walking away from the wrong deal is considerably cheaper than forcing an unsuitable building into an HMO configuration that never really worked.
Don’t want the responsibility sitting on your shoulders?
There is no denying that HMOs can be management and compliance intensive.
Licensing applications, renewals, council requirements, gas safety, electrical inspections, fire systems, certification, maintenance, tenant management and changing regulations all need somebody to take responsibility for them.
Some investors enjoy being heavily involved in that process. Others want exposure to the HMO investment model without effectively taking on another job.
If you fall into the second category, you are more than welcome to explore our range of fully managed HMO investments at www.footforwardproperties.co.uk/hmo-for-sale.
At Foot Forward Property Investments, our view is fairly simple. HMO regulation is not the enemy of good HMO investing. Poor standards are.
Build properly, allow sensible margins above minimum requirements, treat tenants’ homes with respect and put the right management structure behind the property. That is a far healthier foundation for an HMO investment than spending the next ten years trying to discover how close to the legal line you can operate.