Mon. 06 July 2026
When tenants hear “unlicensed HMO”, they often imagine a terrible property. But that's not necessarily the case. An HMO can be clean, modern, well maintained and completely comfortable to live in, while still being legally required to have an HMO licence, and that distinction matters a lot.
What is an HMO?
HMO stands for House in Multiple Occupation.
In simple terms, an HMO is a property where three or more people from more than one household live together and share facilities such as a kitchen, bathroom or toilet.
A classic example is a house where five unrelated tenants each rent their own bedroom but share the kitchen and bathrooms.
But HMOs aren't limited to traditional shared houses. The legal definition can cover different types of accommodation and arrangements, which is why you shouldn't assume a property isn't an HMO simply because it looks like an ordinary house.
The important question is often not what the property looks like, but how it is occupied.
What is an HMO License?
An HMO licence is essentially the council's formal permission for a qualifying HMO to be operated as such. Where a property requires a licence, the landlord generally needs to apply to the relevant local authority and meet the applicable requirements. The council can assess matters such as the suitability of the property, management arrangements, facilities and the number of people the property is suitable for.
A licence can also contain conditions that the landlord has to comply with.
So an HMO licence isn't simply a certificate saying that a house is "safe". It is part of the legal framework regulating certain shared accommodation. And this is where things get interesting for tenants. A property doesn't have to look terrible to be an unlicensed HMO. It can be clean, modern, recently renovated and perfectly comfortable to live in, and still be operating unlawfully if it was required to have a licence and didn't.
Not all HMO licences are the same
One reason HMO licensing can be confusing is that there isn't simply one universal licensing rule that applies to every shared house.
1. Mandatory HMO licensing
Some HMOs fall within mandatory licensing requirements.
In England, this generally covers HMOs occupied by five or more people from two or more households who share facilities, although there are specific legal details and exemptions that can affect whether a particular property falls within the regime.
This is the type of licensing most tenants are likely to hear about when they think of a large shared house.
2. Additional HMO licensing
Councils can also introduce additional licensing schemes.
This is important because a property might not meet the national threshold for mandatory licensing but could still require a licence under a local council's additional licensing scheme.
That means you cannot always determine whether a property needed a licence simply by counting the occupants.
You also need to check the licensing scheme that applied in that particular area during the relevant period.
3. Selective licensing
There is another form of council licensing called selective licensing. This is different from HMO licensing. A selective licensing scheme can require certain privately rented properties in a designated area to have a licence, even where they aren't HMOs. So if you're investigating a potential licensing issue, don't automatically assume that every licence you find, or don't find, is an HMO licence. The type of property, the local scheme and the dates involved all matter.
What does an HMO need that a normal house might not?
This is where HMO regulation becomes particularly relevant. A normal family home is generally occupied by one household. An HMO may involve several unrelated people living independently under the same roof and sharing facilities. That creates additional risks and management issues. For example, an HMO may have specific requirements relating to:
Bedroom sizes and permitted occupancy
Kitchen and bathroom facilities
Fire safety and means of escape
Smoke and carbon monoxide alarms
Fire doors and other fire precautions
Heating and hot water
Waste disposal
Management of communal areas
The number of occupants permitted
General property management and maintenance
Exactly what is required can depend on the type of HMO, the applicable legislation, the licence conditions and the local authority's requirements. This is one reason HMO licensing exists in the first place: a house being suitable for one household doesn't necessarily mean it is suitable to be occupied by multiple unrelated households.
An HMO can be perfectly nice, and still be illegal
This distinction is extremely important. When tenants hear the words "unlicensed HMO", they might picture a neglected house with mould on the walls, broken windows and dangerous wiring. But that isn't necessarily what an unlicensed HMO looks like. Your house could have:
A modern kitchen
Clean bathrooms
Good heating
Freshly decorated bedrooms
No obvious disrepair
A responsible landlord
No history of complaints
and the property could still have been operating without a licence when one was legally required. Licensing and property condition are related, but they are not the same thing. The potential legal issue may simply be that the landlord was required to obtain a licence and failed to do so.
But my landlord didn't do anything wrong to me
This is where the law can surprise tenants. You might think: "My landlord maintained the house, fixed problems and never treated me badly. Why would I have a claim?"
An RRO claim relating to an unlicensed HMO isn't necessarily about whether the landlord caused you personal harm or provided poor living conditions. The underlying issue can instead be the landlord's failure to comply with a licensing requirement. However, this does not mean that every unlicensed HMO automatically results in a successful Rent Repayment Order. A tenant still needs to establish the relevant legal requirements, including that the property fell within the relevant licensing regime and that the landlord committed the applicable offence. There can also be statutory defences, jurisdictional issues, limitation considerations and other factors that affect an RRO claim. So "the property wasn't licensed" is a reason to investigate, not a guarantee that you will receive your rent back.
What is a Rent Repayment Order?
A Rent Repayment Order (RRO) is a legal mechanism that can allow a tenant to recover rent from a landlord in certain circumstances where the landlord has committed one of the specified housing offences. Operating a licensable HMO without the required licence can be one of the offences capable of giving rise to an RRO. The amount that can potentially be recovered depends on the circumstances of the case and the applicable law. It is not automatically the same as the total rent you paid. That's why discovering that your HMO was unlicensed can be significant.
The issue isn't simply that your landlord may have broken a licensing rule. It could potentially have financial consequences for the rent you paid.
This information is for educational purposes, general guidance and is not legal advice. The rules can differ depending on where your property is located and the circumstances of your tenancy.
Check if your property had an HMO license