Houses in Multiple Occupation are where lettings compliance gets genuinely dangerous. The rules are layered, they vary by council, and operating an unlicensed licensable property is a criminal offence with unlimited fines and rent repayment orders. This guide untangles the three regimes and gives you a workflow that closes licensing gaps for good.
Licensing is enforced locally and schemes change — always confirm with the specific council. This is guidance, not legal advice.
First: is it an HMO at all?
A property is an HMO when three or more tenants from two or more households share facilities (kitchen, bathroom). Households are defined by relationship — three friends are three households; a couple plus one friend is two.
Common surprises:
- A converted building of self-contained flats can be an HMO under Section 257 rules if the conversion predates 1991 Building Regulations and most flats are rented.
- Live-in landlord with three or more lodgers? HMO.
- Student lets are the classic case — most three-bed student houses are HMOs, licensed or not.
Being an HMO triggers the HMO Management Regulations (fire safety, facilities, repair duties) regardless of whether a licence is also needed.
Regime 1: mandatory HMO licensing (national)
A licence is always required when the property houses five or more people forming two or more households. This applies in every English council, no local scheme needed.
The licence itself imposes conditions: minimum room sizes (6.51m² for a single adult sleeping room), amenity ratios, fire precautions, gas and electrical certification, and a "fit and proper person" test for the licence holder or manager.
Regime 2: additional licensing (council-declared)
Councils can extend licensing to smaller HMOs — typically the three- and four-person shared houses that mandatory licensing misses. Whether a scheme exists, which wards it covers and what it costs is entirely local, and schemes run in five-year cycles, so a property that needed no licence last year can need one this year.
Regime 3: selective licensing (not just HMOs)
Selective licensing applies to all privately rented properties in a designated area — including ordinary single-family lets. If a selective scheme covers the street, every rental on it needs a licence.
This is the regime that catches portfolios off guard, because it has nothing to do with sharers.
The penalties are not theoretical
Operating an unlicensed licensable property exposes you to:
- Unlimited fines on prosecution, or civil penalties up to £30,000 per offence
- Rent Repayment Orders — tenants can reclaim up to 12 months' rent
- No valid possession route for key grounds while unlicensed
- Licence refusal in future on "fit and proper" grounds
For agents, managing an unlicensed HMO is its own offence — "the landlord never told me" is not a defence when the tenancy file shows five names.
A workflow that closes the gap
- Classify every property at onboarding. Occupant count and household composition recorded as structured data, not prose in a notes field.
- Map every property to its council schemes — mandatory (national), additional and selective (local). Diarise the scheme end/renewal dates too: schemes lapse and restart.
- Watch occupancy changes. The dangerous moment is mid-tenancy drift: a fourth sharer moves in, or a couple joins a three-person house. Any tenancy change should re-run the HMO test automatically.
- Track the licence like a certificate: application date, grant date, expiry, conditions. Licence conditions (room sizes, amenities) belong on the property record where viewings and tenancy decisions can see them.
- Evidence everything. Licensing enforcement is document-driven — the property file wins or loses it.
This is exactly the shape of problem LintelCRM's compliance tracking automates: licences are tracked per property with expiry chasing, and room-level tenancies keep the occupancy picture accurate in real time.
Frequently asked questions
Who should hold the licence — landlord or agent? The most appropriate person managing the property. Many landlords ask their agent to be licence holder; agents should price the responsibility (and the fit-and-proper exposure) accordingly.
Do purpose-built student blocks need HMO licences? Most institutional student accommodation is exempt through approved codes of practice — but private houses let to students are not.
How long does a licence last? Up to five years, though councils can grant shorter. Renewal is not automatic — treat expiry like a gas certificate: chased, booked, evidenced.