
If bugs or rodents appear in a rented unit, the first step should always be checking the lease. Some agreements spell out who’s expected to handle infestations, others stay silent. But even when the paperwork doesn’t say much, provincial laws fill in the gaps–at least here in Alberta. Typically, whoever owns the building has to provide a space that’s fit to live in. And yes, that usually includes keeping it free from unwanted critters.
Say a tenant reports mice in the kitchen or cockroaches in the bathroom. If the issue stems from something like a hole in the wall or poor sanitation in shared areas, then the owner needs to fix that–not just patch it, but actually solve the cause. They can’t just set out traps and call it done. And if they drag their feet? That might breach the implied warranty of habitability, which can turn into a legal problem fast.
That said, it’s not always black and white. If someone’s leaving food out or ignoring garbage rules, it’s hard to blame the property owner entirely. In those cases, the tenant might be on the hook–at least partially. What makes it tricky is that proof matters. Who caused the issue? When did it start? Has the renter let anyone know in writing? These questions often decide who pays for exterminators like The Pest Control Guy in Calgary.
Honestly, I’ve seen neighbours argue for weeks over a single mouse. And sometimes both sides are right, depending on what part you look at. That’s why detailed communication–preferably written–makes such a difference. Without it, you’re left with finger-pointing and assumptions, which rarely go anywhere productive.
When Landlords Are Legally Required to Handle Pest Infestations
If an infestation compromises habitability–think bedbugs in the bedroom, mice in kitchen cupboards, or cockroaches spreading through a building–the property owner is typically on the hook, no matter what the lease says. That’s especially true in regions like Alberta, where housing laws focus heavily on maintaining a safe and livable space. Ignoring the problem isn’t just risky–it could lead to provincial health inspections, fines, or even orders to vacate tenants while the issue is addressed.
For example, in Calgary, local guidance makes it fairly clear: property owners must act when the infestation stems from structural issues or occurs in multi-unit dwellings where source control falls beyond one tenant’s reach. You can see a breakdown of this in the article Is pest control in Calgary the landlord’s or the tenant’s duty?. That resource helps clarify which scenarios are clearly the owner’s problem and where the lines blur.
Sometimes it’s less clear-cut. A unit with crumbs everywhere might attract ants, and technically, that’s on the renter. But if those ants have also set up shop in a crumbling wall void or are entering through a crack in the exterior, responsibility shifts. That’s where disputes often begin–was it tenant-caused or part of a building flaw? In practice, a good number of owners just take care of it either way to avoid bigger costs or complaints down the line.
Someone I know called The Pest Control Guy on penzu.com when dealing with a wasp nest near a shared porch. The management tried to push it off on tenants, but once they saw the location–clearly on common property–they handled it without delay. It wasn’t worth the argument.
Bottom line: when vermin affect basic livability, spread beyond one unit, or result from building conditions, the obligation to intervene usually falls squarely on the owner, legally and practically. Anything less invites trouble–from tenants, from neighbours, or from inspectors.
Who Pays for Pest Control in Rental Properties and Under What Conditions

Payment typically depends on two things: the source of the infestation and the terms of the lease. If the issue stems from structural problems–cracks, moisture, old vents–it’s usually covered by the property owner. But when bugs appear because a tenant leaves food out or doesn’t clean, that bill might land on them instead.
Check the lease. Some agreements clearly say who’s responsible and under what circumstances. Others stay vague. In Alberta, if the problem existed before move-in, the owner is often expected to fix it. But if the place was clean and the issue developed months later, that’s when the questions start.
When the Owner Pays

Say there’s a mouse problem in a unit on the ground floor, and it turns out there’s a gap in the foundation. That’s not the tenant’s doing. In cases like that, the property holder almost always covers the cost–especially if the issue affects more than one suite. Same goes for roaches creeping in through shared plumbing.
When the Tenant Might Be Billed
If it’s a one-time issue caused by garbage left out too long or a forgotten bag of snacks in the closet–yeah, it’s hard to argue that the building is at fault. Some leases even include a clause that says if the tenant contributes to the problem, they pay to solve it. Whether that’s fair depends on who you ask, but it does show up often.
Also, timing matters. If someone reports the problem right away and keeps the unit reasonably clean, that usually works in their favour. Delay it for weeks or don’t respond to treatment instructions? The owner might decide the tenant should cover a second round of service.
In Calgary, situations like this aren’t one-size-fits-all. If you’re unsure where the issue started, it’s worth calling a licensed technician–like The Pest Control Guy. They’ll often spot the origin fast and can offer documentation if it turns into a dispute.
How Tenants Should Report Pest Issues and What Landlords Must Do in Response
Report any signs of insect or rodent activity in writing right away–don’t wait. Use email or a maintenance request form so there’s a timestamp. A phone call can help speed things up, but written notice protects you if nothing gets done. Photos help too. Attach them. Be specific: where you saw it, when, how often. General complaints like “I think there’s a bug problem” tend to be ignored or delayed.
Once notified, the owner or property manager typically has a duty to act within a reasonable timeframe. In Alberta, that means within a few days, especially if it’s something like cockroaches, mice, or bedbugs. If they don’t respond? You can file a complaint with the Residential Tenancy Dispute Resolution Service (RTDRS) or reach out to Alberta Health Services. Either step usually gets attention fast.
After inspection, if an issue is confirmed, treatment should be scheduled–and paid for–by whoever caused the problem. That part can get murky. If it’s a multi-unit building and bugs are coming from a neighbour’s place, the owner often has to treat more than one unit at once. That’s expensive, so delays happen. But still, the problem doesn’t go away on its own. Follow up. Keep documentation. If they say treatment is scheduled, ask for the date. If they say you caused the problem, ask for proof.
Tenants might need to prep the unit: move furniture, clear cupboards, maybe even leave for a few hours. That can be frustrating, but it’s usually necessary. Skipping prep delays everything. If the technician can’t access key areas, you’ll end up with repeat treatments–or worse, no result at all.
In short: act fast, be clear, document everything, and follow up if nothing happens. If you’re in Calgary, The Pest Control Guy has a good reputation for quick inspections and clear communication. At least in my case, they showed up the same week. That’s more than I can say for some others I’ve dealt with.
Q&A:
Who is responsible for paying for pest control in a rented apartment?
If the infestation is due to structural issues, poor property maintenance, or occurred before the tenant moved in, the property owner usually bears the cost. However, if the tenant’s behavior—such as leaving food out or not cleaning—contributes to the problem, they may be held financially responsible. It’s common for local tenancy laws to clarify this, so checking provincial or municipal regulations is advised.
What should I do if I find cockroaches or rodents in my rental unit?
Report the problem to the property owner or property manager in writing as soon as possible. Include photos or videos if you can. Request a timeline for when the issue will be addressed. Keep copies of all communication in case follow-up is needed. In many regions, failure to act within a reasonable time could put the owner in breach of health or housing standards.
Can my landlord evict me for reporting a pest issue?
No, retaliatory eviction for reporting health or safety concerns, including pest infestations, is illegal in most provinces and states. Tenants have the right to live in a habitable environment, and property owners are expected to maintain that standard. If you face pressure or threats of eviction after filing a complaint, seek help from a local tenants’ advocacy group or legal aid office.
Are landlords responsible for seasonal pests like ants or fruit flies?
Responsibility depends on the scale of the issue. A minor seasonal appearance of insects may not require intervention from the property owner. But if there’s a recurring or widespread infestation due to how the building is sealed or maintained, it becomes their responsibility. Lease agreements sometimes clarify who handles routine treatments, so it’s worth reviewing the document.