Are Landlords Responsible for Pest Control? The Rules in Wales
By Henry, Taff Pest Control · Reviewed August 2026 · General guidance, not legal advice
It’s the question behind half the rental pest jobs we attend: who pays, landlord or tenant? Tenants don’t want to fund a problem they inherited; landlords don’t want to fund one the tenancy caused. Meanwhile the mice are multiplying. Here’s how it actually works in Wales, in plain language, from a business that regularly works for both sides.
The short answer
Landlords generally carry pest problems that come from the building itself or that pre-date the tenancy: rats coming up a defective drain, mice through failed brickwork or gaps around services, an infestation already present at move-in, and anything in communal areas of flats and HMOs.
Tenants generally carry problems their own living habits caused (accumulated waste attracting rats, or a flea infestation from their own pet) and can be responsible for making a problem worse by failing to report it promptly.
Real cases are often somewhere in between, which is why the cause matters more than the argument. More on that below.
What the law says in Wales
Wales has its own framework, and it’s stronger for tenants than many realise. Under the Renting Homes (Wales) Act 2016, a landlord must ensure the property is fit for human habitation, the FFHH requirements that came into force in 2022. A serious infestation, or disrepair that lets pests in (broken airbricks, defective drains, holes around pipework), can make a dwelling unfit. That puts the fix on the landlord, and includes dealing with the pests that the defect admitted.
If you’re a tenant
Report the problem in writing, early, with photos: droppings, gnaw marks, the gap under the door. Prompt reporting protects you twice over: the problem gets dealt with while it’s small, and no one can later claim it grew because you sat on it. Allow access for inspection and treatment. And if the landlord simply won’t engage, the formal escalation route is the council’s environmental health department. That’s a door we can point at, but disputes are their lane, not ours. We deal with the pests, whoever’s paying.
If you’re a landlord or agent
Move fast. Pests spread between rooms, then between flats, and a small problem becomes an expensive one while emails go back and forth. Get the cause established by inspection rather than assumption: we’ll call it as we find it (defective drain or overflowing bin) because the answer decides who pays and what fixes it. And treat proofing as the investment it is: closing the entry points is what ends the repeat callouts that make rental pest control expensive. In HMOs and converted blocks, treating one flat at a time often just pushes the problem sideways; sometimes the right answer is one coordinated job, and we’ll say so. Cockroaches in shared buildings are the classic case.
Where we fit in
We work for tenants, landlords and the letting agents in between, across Cardiff and the Vale, including contracts and programmes for agents and HMO landlords. Whoever books us, the inspection findings are the findings: an honest account of the cause that both sides can rely on, which usually shortens the who-pays conversation considerably.
Common questions
Who pays for mice in a rented house?
If they’re getting in through the building (gaps, vents, failed seals) that points to the landlord, especially in Wales under the fitness requirements. If the attraction is the tenancy’s own waste or food storage, that points to the tenant. An inspection usually settles it quickly, and the proofing that follows protects both parties.
My landlord won’t do anything. What can I do?
Put the problem in writing with photos and a reasonable deadline, and keep copies of everything. If nothing moves, the formal route is the council’s environmental health department. We’ll point at that door, but the dispute itself isn’t our lane. What we can do is inspect and put the cause in writing: an independent finding of a defective drain or a failed airbrick tends to move a who-pays conversation faster than another strongly worded email.
Can my landlord charge me for pest control?
Only where the problem is genuinely down to the tenancy (a pet flea infestation is the classic example). They can’t pass on the cost of problems the building caused. If the cause is disputed, an independent inspection finding is worth more than either side’s assertion.
We moved in and the flat already had fleas. Whose problem is that?
An infestation present at the start of the tenancy is the landlord’s to sort, commonly fleas left dormant by a previous tenant’s pet, waking when new footsteps arrive. Report it in writing straight away so the timeline is clear.
Worth reading: for anyone gathering evidence to report, our guide to the signs of rats in the house goes through what’s worth photographing. With mice, our mouse control page explains why no house can be sealed against them completely.
Tenant, landlord or agent, if you’d rather just get the problem inspected and dealt with while the paperwork argues, that’s what we’re for.