HMO pest control responsibilities sit mainly with the manager or licence holder rather than with individual tenants, because the shared kitchen, bin store, hallways and voids are common parts nobody living in one room controls. A single let has one household and one tenancy. A house in multiple occupation has several, plus management duties over the shared parts and, above a threshold, a licence.
The manager of a house in multiple occupation carries duties over the shared parts of the building that a landlord of a single let does not. The manager must keep the common parts and their installations in repair and in clean condition — and the common parts are where mice and cockroaches in a shared house almost always live.
The second difference is behavioural. In a shared house, one tenant leaving food out in the communal kitchen feeds an infestation that reaches every room on every floor.
A house in multiple occupation is a property let to three or more people forming more than one household who share facilities such as a kitchen, bathroom or toilet. "More than one household" is the operative part: three friends on separate agreements are three households; a family of five is one.
An HMO occupied by five or more people forming two or more households needs a mandatory licence from the council.
The manager or licence holder is responsible for the shared kitchen and the bin store in practice, because both are common parts that no single tenant can put right alone. An HMO manager must also make suitable arrangements for refuse disposal, which means enough bin capacity for the number of occupiers and collections often enough to clear it.
A shared kitchen is the highest-risk room in an HMO for cockroaches and mice, for four reasons at once. Food is present in larger quantities and for longer, because several households store and cook separately. Appliances multiply, and the warm cavities behind a fridge, freezer or dishwasher are where German cockroaches harbour. Cleaning is nobody's individual job, so spillage behind and under units survives. And the kitchen carries the most pipe and cable penetrations, each a route between storeys unless sealed.
Bin stores fail the same way: overfilled communal bins, bags left beside them and long collection intervals give rats and mice a permanent food supply a few metres from the building.
HMO management duties require the manager to keep the common parts, fixtures, fittings and appliances in repair, in clean condition and in good order. An infestation in the common parts engages those duties directly: droppings across a shared kitchen worktop, gnawed pipe boxing on a communal landing or a rat run through a cellar is a failure to keep common parts in clean condition, not a tenant's housekeeping lapse.
Council powers apply to HMOs as well. The Housing Health and Safety Rating System (HHSRS) rates domestic hygiene, pests and refuse as a category of hazard, and a council assessing an HMO can act on that hazard whatever the licensing position. An environmental health officer scores it, bands it as category 1 or category 2, and can then serve an improvement notice naming the works and the period allowed for them.
| Area of the HMO | Who is responsible in practice | Duty or power that applies |
|---|---|---|
| Shared kitchen | Manager or licence holder | HMO management duty — common parts and appliances in repair and clean condition |
| Shared bathroom, hallways, stairs, cellar | Manager or licence holder | Same management duty — common parts and installations in repair and good order |
| Bin store, yard and refuse arrangements | Manager or licence holder | Management duty for refuse disposal; abatement notice where it is a statutory nuisance |
| Structure, exterior, drains, airbricks | Landlord | Duty to keep the structure and exterior in repair |
| An individual let room | Manager for structure and proofing; occupier for food storage and cleanliness | Repairing duty plus the tenancy terms |
| Substantial rat or mouse infestation, whole property | Owner and occupier both must notify the council | Duty to report rats and mice to the local authority |
| Hazard assessment and licence conditions | Local authority | HHSRS hazard rating and HMO licensing |
Yes, in principle. A council can attach conditions to an HMO licence, and those conditions can cover management standards relevant to pests and refuse. Breach of a licence condition is an offence, and enforcement ranges from an improvement notice to a civil penalty.
A licence holder and manager must also be a fit and proper person, and a council reviewing that question looks at the applicant's record of compliance with housing law. One mouse callout handled properly is not a licensing problem; a pattern of unaddressed hazards and ignored notices bears on the assessment.
Treating one room in an HMO usually fails because mice and cockroaches do not live inside a single tenancy. Mice travel through floor voids, service risers, pipe boxings and the gaps around soil pipes, and the nest is often in a void or cellar rather than in the room where droppings appear. Treat room three alone and the population in the voids, kitchen and cellar is untouched, so room three is reinfested within weeks.
The durable approach is whole-property treatment plus proofing: survey every let room and every common part, treat as one job, then seal entry points with wire wool, mortar, metal mesh and brush strip. Work on that scale is arranged through the manager rather than one resident, and where the manager can open the whole property at once, the survey need not wait: 247 Pest Control states that same-day attendance is available across London and that it responds to emergency enquiries 24/7, while noting that attendance time cannot be identical for every call. That inspection is what turns an urgent call into a plan: the species named, the treatment chosen, and the earliest date it can happen.
A tenant in an HMO should report the problem to the manager in writing and keep the record, because a written report is what environmental health and a court can see. Take these five steps in order.
An HMO manager should have scheduled monitoring rather than reactive callouts, because a shared house generates new risk with every tenancy change. Meeting HMO pest control responsibilities in practice means four things running continuously: periodic inspection of the kitchen, cellar and voids; documented treatment records for the property; managed refuse with adequate bin capacity and collection frequency; and proofing of the common parts as a maintenance item rather than an emergency. Turnaround belongs on that list too, because a shared house has to be opened room by room, and the longer a job stays half done the more likely it is that the rooms treated first are reinfested from the ones still waiting.
Professional pesticide use also requires a written risk assessment for substances hazardous to health, and the paperwork a contractor leaves — product used, quantity, location, date, technician, safety information — is the evidence that treatment happened correctly. Keep it with the property file, because it is the same paperwork a council asks for when it assesses whether the manager has met the standard.
Budget for the property, not the room. 247 Pest Control publishes a pest inspection from £62 and rat or mice control from £214 as starting points for straightforward domestic treatments, and names property size, infestation level, visits needed, access and urgency among the variables that move a figure. Each runs higher in a six-bedroom shared house than in a one-bedroom flat, so a starting price is a floor to reason from, not a quote for an HMO.
A landlord must keep the structure and exterior of the dwelling and its installations in repair. Pests engage that duty where a disrepair is the cause — a broken airbrick, a gap around a soil pipe, a damaged drain — rather than through a standalone pest clause. HMO management duties cover the common parts separately.
No. Mandatory licensing applies to HMOs occupied by five or more people forming two or more households. Smaller HMOs need a licence only where the council has designated an additional licensing scheme, and some areas also operate selective licensing. Check the council's public register for the borough the property is in.
Yes. A council can inspect an HMO, assess domestic hygiene, pests and refuse as a hazard against the Housing Health and Safety Rating System, and serve an improvement notice naming the works. Where conditions amount to a statutory nuisance it can serve an abatement notice instead, and ignoring either notice is an offence.
The manager or licence holder pays where the infestation involves the common parts, the structure or the refuse arrangements, which covers most HMO cases. A tenant can be liable where their own conduct caused the problem and the tenancy agreement says so, but a shared kitchen infestation is rarely attributable to one room.
Yes, where the infestation is substantial. Owners and occupiers of land must notify the local authority of a substantial infestation of rats or mice, so in an HMO that duty can fall on the manager and on the residents alike. The local authority must also keep its own land free of rats and mice.