HMO Licensing UK: What Tenants Need to Know

An HMO is a property occupied by three or more people from at least two separate households who share facilities like a kitchen, bathroom, or toilet. "Household" here means people who are related or in a relationship. Five unrelated people sharing a house is an HMO. A couple plus one friend sharing a flat is also an HMO.

The definition sounds straightforward, but it catches many landlords off guard, particularly those who converted a family home into a shared rental without checking the rules first. There are roughly 362,000 HMOs across England and Wales as of 2026, and that number is growing.

There are also "large HMOs," which is the term used for properties occupied by five or more people from two or more households sharing facilities. Large HMOs are subject to mandatory licensing nationwide, with no exceptions based on local council policy.

Bedsits, houses of multiple occupation with converted loft rooms, and purpose-built shared student accommodation can all fall within the definition, depending on the occupancy arrangement. If you're unsure whether your property qualifies, start by counting how many unrelated people live there and whether they share a kitchen or bathroom. Three unrelated people sharing means you're almost certainly in an HMO.

For a fuller breakdown of how HMOs are structured and what they mean for tenants day to day, see Understanding HMOs for renters in the UK.

Not all HMO licensing works the same way. There are three distinct schemes, and your property might be caught by more than one.

Mandatory licensing applies nationally to all HMOs with five or more occupants from two or more households. Your landlord must hold a licence for this type of property regardless of where in England it is, and regardless of whether the council has made any local designation. This is the baseline.

Additional licensing is where it gets more local. Councils can designate areas or property types where smaller HMOs, typically those with three or four occupants, also require a licence. Since the Renters' Rights Act 2025, councils no longer need central government approval to create these designations. That change has triggered a rapid expansion of additional licensing across the country. Councils in London, Manchester, Bristol, and Birmingham have all added new schemes in the past two years.

Selective licensing covers all private rented properties in a designated area, not just HMOs. A council might apply this to a street, a ward, or an entire borough if they're trying to improve standards across the board. If your property sits inside a selective licensing zone, your landlord needs a licence even if you're the only tenant.

The practical implication: you cannot assume your landlord is exempt just because your property has fewer than five occupants. Check whether your local council has introduced additional or selective licensing, because the areas covered have expanded a lot. Hackney, Islington, and Westminster have all introduced new schemes in 2026, as covered in detail for each borough in our guides on Hackney selective and HMO licensing 2026, Islington selective licensing 2026, and Westminster selective licensing 2026.

This is simpler than most tenants expect. Start with your local council's website and search for their HMO or private rented sector licensing page. Most councils publish a public register of licensed properties. You enter your address and the register tells you whether a valid licence exists.

The GOV.UK website also has an HMO licence finder tool that points you toward the right council for your address. If the online register is unclear, call the council's housing or licensing department directly and ask. They're required to tell you.

When you're checking, look at three things: whether a licence exists at all, whether it covers the correct number of occupants, and whether it's still in date. Licences typically run for five years. A licence that expired in 2023 provides no protection. A licence issued for a four-person property that now houses six people is also non-compliant, and your landlord may still be operating unlawfully.

Also note the licence conditions. A properly issued HMO licence comes with conditions covering room sizes, fire safety equipment, waste management, and management standards. Your landlord must comply with all of them, not just hold the paper. If conditions are being breached, that's a separate ground for complaint to the council even if a licence technically exists.

Keep a record of your search. Screenshot the council register showing no licence, or save the email from the council's housing team. That evidence is the foundation of any claim you might want to make later.

Operating an unlicensed HMO is a criminal offence. Not a technicality. The law under Section 72 of the Housing Act 2004 is clear: your landlord faces civil penalties up to £40,000 under the Renters' Rights Act 2025, unlimited fines upon prosecution, and a Rent Repayment Order requiring them to refund you up to 12 months of rent.

The Rent Repayment Order is the remedy most tenants pursue because it puts money directly in your pocket. The amount is calculated based on rent actually paid during the period the property was unlicensed. If you've been paying £1,000 a month for the past year and the property was never licensed, you can apply to the First-tier Tribunal for up to £12,000 back.

Recent tribunal decisions show this isn't theoretical. In March 2026, five tenants in Tower Hamlets secured over £31,000 in repayments after their landlord, Mio Real Estate Ltd, failed to hold an additional HMO licence. A Lambeth landlord was ordered to pay £30,600 in the same year after operating an unlicensed HMO with serious fire safety failures. A repeat offender in Haringey was ordered to pay £7,884 plus fees.

Tribunals decide the exact amount based on landlord conduct, the seriousness of the breach, and whether any mitigating factors exist. Membership in a landlord association like the National Residential Landlords Association does not protect a landlord from an RRO. The question is whether the breach happened and how bad the conduct was.

Two additional protections apply while your property is unlicensed. First, your landlord cannot serve a valid Section 21 notice if the property requires a licence but lacks one. Second, the unlicensed status is itself a ground for complaint to the council, which may trigger an inspection and enforcement action independently of any tribunal claim you make.

For a full walkthrough of how to apply for a Rent Repayment Order, see How to Apply for a Rent Repayment Order UK.

The process has four stages, and none of them require a solicitor.

Stage 1: Gather your evidence. You need your tenancy agreement, proof of rent payments (bank statements, receipts, or a payment app history), and evidence that the property was unlicensed during the period you're claiming for. The council register screenshot mentioned above is your key document. If you can, get a written confirmation from the council that no licence was in force.

Stage 2: Send a letter before action. This is a formal letter to your landlord setting out the breach, the amount you're claiming, and your intention to apply to the tribunal if they don't respond. Many landlords settle at this stage to avoid tribunal costs and a public ruling. A letter before action carries legal weight and is expected procedure before you file.

Stage 3: File at the First-tier Tribunal (Property Chamber). You submit a RENTS1 form with your evidence bundle. The tribunal fee is currently £100 for most claims. You don't need legal representation, though having your bundle well-organised materially improves your chances. The tribunal will set a hearing date, usually within a few months of filing.

Stage 4: Attend the hearing. You'll present your case. The landlord will present theirs. The tribunal decides the amount, which can be reduced if the landlord demonstrates mitigating conduct, or increased if conduct was particularly poor.

If your landlord owes rent arrears, do not withhold rent during this process. Withholding rent creates a separate legal problem and can complicate your tribunal claim. Keep paying, keep records, and pursue the RRO through the proper channel.

For a step-by-step guide to completing the tribunal paperwork, see RENTS1 Form: How to Complete It Step by Step.

Remedy Legal can help at every stage of this process. The platform checks your property for HMO licence validity, helps you draft the letter before action with the correct statutory references, and generates your tribunal bundle when you're ready to file. The free assessment tells you your legal position and likely claim value before you commit to anything.

The Renters' Rights Act 2025 made two changes that directly affect HMO tenants' ability to claim.

First, it expanded the grounds for Rent Repayment Orders beyond licensing failures. From 1 May 2026, tenants can apply for an RRO if their landlord commits any of these qualifying offences: operating an unlicensed HMO, carrying out an unlawful eviction, harassing a tenant, failing to join a landlord ombudsman scheme, or engaging in prohibited rental bidding. The licensing failure ground existed before, but the addition of harassment, unlawful eviction, and ombudsman non-registration means tenants have more routes to compensation if their landlord's conduct falls short.

Second, civil penalties for licensing offences rose to £40,000. That's up from £30,000 under the previous regime. Higher civil penalties combined with expanded RRO grounds means the financial exposure for non-compliant landlords is now significant enough that enforcement is much more likely to follow a complaint.

The Act also abolished Section 21 no-fault evictions from 1 May 2026. This matters for HMO tenants because landlords who previously relied on Section 21 to remove tenants who complained about licensing or disrepair no longer have that option. If your landlord tries to evict you after you make a licensing complaint, that is retaliatory eviction, which is itself a qualifying offence under the new regime.

The shift to default rolling periodic tenancies also changes the dynamic inside shared houses. In a joint tenancy, one tenant giving notice can now end the tenancy for everyone. If you're in an HMO with joint tenants, understand how that works for your specific agreement before making any formal complaints, so you're not left in a position you didn't expect.

For the full picture of how the Act affects deposit rules and other tenant protections, see Renters Rights Act 2025: What Tenants Can Claim.

Getting the licence is one thing. Complying with its conditions is another, and many landlords fail on the second part even when they've managed the first.

HMO licence conditions typically require: minimum room sizes (at least 6.51 square metres for one adult), working smoke alarms on every floor, fire doors in certain configurations, adequate kitchen and bathroom facilities for the number of occupants, a proper waste management plan, and an annual gas safety certificate. Breach any of these conditions and the landlord is in violation, even with a valid licence in hand.

If your room is smaller than the legal minimum, your landlord may have breached their licence conditions and also the Housing Health and Safety Rating System rules. Both give you grounds for a council complaint and potentially a disrepair claim.

The gas safety certificate is worth flagging separately. Landlords must provide you with a copy within 28 days of it being issued, and before you move in. Failure to do so is a separate criminal offence with its own compensation route, independent of the HMO licence question. If your landlord has never given you a gas safety certificate, check our guide on Gas Safety Certificate Breach: Tenant Compensation UK.

Electrical safety works similarly. Since 2020, landlords in England must have an Electrical Installation Condition Report carried out every five years and provide you with a copy. An HMO landlord who hasn't done this is in breach of their statutory obligations, and councils can issue remediation notices.

If your property has structural disrepair, damp, mould, or broken heating on top of a licensing issue, you may have multiple claims running in parallel. A licensing claim at tribunal and a disrepair claim in the county court can both proceed. They use different processes and different remedies, but they're not mutually exclusive.

Most tenants who live in an unlicensed HMO don't know they can claim anything. They assume it's the council's problem, or they worry the process is too complicated, or they don't want to risk their tenancy. All three concerns are understandable and all three are more manageable than they seem.

Remedy Legal is an AI-powered platform built for exactly this situation. You share the details of your tenancy, and Remedy checks for RRO eligibility, HMO licence validity, deposit protection compliance, gas safety certificates, and other potential violations. The free instant assessment gives you a clear picture of your legal position and an estimated claim value, with no credit card required.

If you want to take action, the £40 one-time platform tier gives you access to AI-drafted letters citing the correct legislation, tribunal filing support, court bundle generation, document storage, and deadline tracking. The letters are reviewed for legal accuracy and reference the specific statutory provisions your landlord has breached, which matters when you're dealing with a landlord who has their own solicitor.

For tenants who want expert involvement, the no-win-no-fee tier starts at 10% of your winnings. That includes a 30-minute consultation with an expert, expert review of your documents and communications, and strategic guidance throughout the claim. You only pay if you win.

Remedy is not a law firm and cannot represent you at a tribunal. But it can get your paperwork right, your bundle organised, and your letter sent before your landlord's solicitor has had a chance to respond. That's the difference between a claim that reaches the tribunal in good shape and one that gets dismissed on a technicality.

You can start a free assessment on WhatsApp or through the platform. If you think your HMO might be unlicensed, the assessment will confirm it in minutes.

You don't need to be a housing lawyer to spot the signs that something is wrong. These are the most common indicators that an HMO landlord is operating outside the rules.

No licence number in your tenancy agreement. Licensed landlords in most councils are required to display the licence number. If your agreement doesn't mention one, that's worth checking.

No gas safety certificate provided on move-in. Your landlord is required to give you this before your tenancy starts. If they haven't, ask in writing. If they don't respond or claim they don't have one, that's a breach on its own.

No smoke alarms or fire doors. An HMO without working smoke alarms on every floor is almost certainly breaching its licence conditions, or operating without one.

Overcrowded rooms. If your room is obviously too small for legal occupation, the licence conditions are likely being breached. Minimum room sizes are set out in the licence conditions and in national standards.

Landlord gets aggressive when you ask about the licence. A landlord with nothing to hide will tell you the licence number and point you to the council register. One who deflects, ignores the question, or threatens you when you raise it is giving you information through their behaviour.

Your landlord can't be contacted through a formal address. Licensed landlords must provide a contact address for service of documents. If your only contact is a mobile number, that's a compliance issue.

If two or more of these apply to your property, run the licence check. The council register takes five minutes. What you find might entitle you to a significant sum.