Pest Management on Strata Common Property in BC

A council in Surrey spends $2,800 having a pest company treat one unit for cockroaches. Six weeks later the unit next door reports them. Then the one above. The money is gone and the problem is worse, because cockroaches were never confined to one unit and treating a single strata lot in a shared building is close to setting money on fire.

Pests do not respect the boundary between a strata lot and common property, which is why the responsibility question and the treatment question have different answers. Sorting that out is most of what a council needs to know.

Who pays: the rule and the exception

The default follows the usual dividing line. Common property — grounds, exterior, roof, parkade, garbage enclosure, wall cavities, service shafts, shared attics — is the strata corporation's responsibility. Inside a strata lot is generally the owner's. Who's responsible: strata vs owner repairs and common property vs limited common property cover the underlying line.

The exception matters more than the rule. Where an infestation is building-wide, or travels through common property, treating it as a series of individual unit problems does not work. Rodents nesting in wall cavities, cockroaches moving through shared plumbing penetrations, bed bugs migrating along a corridor, wasps in a soffit — these are common property problems that manifest inside units.

The practical policy most well-run buildings adopt: the strata coordinates and pays for building-wide treatment of pests that travel, and recovers costs from an individual owner only where that owner's conduct clearly caused the problem — hoarding, refusing access, feeding wildlife, storing food on a balcony. Adopt that as a written policy in advance, because deciding it during an outbreak guarantees an argument.

The five that actually come up in BC

Rats and mice. The most common and the most consequential, because rodents chew wiring and insulation and carry disease. Note a significant BC change: the province has permanently restricted second-generation anticoagulant rodenticides, limiting their use largely to essential services. A residential strata generally does not qualify, so your pest contractor should be working with traps, monitoring and — above all — exclusion rather than the poisons used a decade ago. If a contractor proposes bait stations, ask what product and under what authority.

European chafer beetle. Endemic across Metro Vancouver. The lawn damage is not caused by the beetle but by crows, skunks and raccoons tearing the turf apart to eat the grubs. The main control is nematodes, applied in a narrow window in mid-to-late summer when the grubs are young — miss it and you wait a year. Cultural measures work too: mow higher, water deeply and less often, overseed with hard-wearing tall fescue, and in badly affected areas consider converting turf to planting beds or drought-tolerant alternatives. Many BC municipalities restrict cosmetic pesticide use, so check locally before anyone proposes a chemical answer.

Wasps, hornets and honey bees. Identify before you treat. Wasps and hornets in a soffit or eave are a genuine hazard and are dealt with by a pest contractor. Honey bees are a different matter — a swarm or established colony should be removed by a beekeeper rather than exterminated, and local beekeepers will frequently collect a swarm at little or no cost. Get a photograph before authorising anything; the two get confused constantly, and killing a honey bee colony inside a wall leaves the comb and honey behind, which then attracts everything else.

Carpenter ants and other wood-destroying insects. Worth taking seriously, because they indicate moisture. Carpenter ants nest in damp, decaying wood, so an infestation is often the visible symptom of a building envelope problem. Treat the ants and investigate the water — the second half is the one that saves money.

Bed bugs. The hardest, the most socially difficult, and the one most likely to be concealed. Treatment must cover the affected unit and its neighbours, requires thorough preparation by residents, and usually needs multiple visits. Success depends almost entirely on cooperation, which means the strata's approach should reduce the incentive to hide an infestation rather than increase it — a fine-first policy guarantees late reporting and a bigger problem.

Alongside these: pigeons and nesting birds, raccoons and skunks denning under decks and sheds, moles in townhouse lawns, and silverfish in damp storage.

Exclusion is the actual answer

Treatment kills what is there. Exclusion stops the next lot arriving, and it is the part councils under-fund.

• Seal entry points. Rodents need remarkably little space. Gaps around service penetrations, vents, garage door seals, damaged screens and gaps under exterior doors are the standard routes.
• Fix the garbage room. Overflowing bins, propped doors, food waste stored loose and containers that do not seal are the single largest driver of a rodent problem in a strata building. Increasing collection frequency is usually cheaper than the pest contract.
• Screen vents and cap chimneys. Cheap, and it settles the raccoon question permanently.
• Manage the landscaping. Dense ground cover against the building, ivy on walls, fruit trees dropping unharvested fruit and bird feeders all sustain populations. Trim back from the building line.
• Repair water problems. Damp attracts almost everything on the list above.
• Deal with under-deck and crawl space access before something dens there rather than after.

An annual exterior inspection specifically looking for entry points is an hour of work with a better return than most of the pest budget.

There is a seasonal rhythm worth planning around. Rodents come indoors as the weather turns in October and November, wasp nests reach their largest and most aggressive in late summer, and the chafer nematode window falls in the middle of summer and does not wait. Put the three on the annual calendar rather than responding to each one as a surprise.

Bylaws and resident behaviour

Some of this is governance rather than maintenance. Consider whether your bylaws and rules address:

• Feeding wildlife and birds, including bird feeders on balconies
• Food storage on balconies and patios, and composting practices
• Garbage handling, including a requirement to use the containers provided and not to leave waste beside them
• A duty to report suspected infestations promptly, framed as cooperation rather than as a fining opportunity
• Access for treatment, which the strata will need and which is far easier when the expectation is set in advance

Where an owner refuses access or refuses to prepare their unit, the strata has enforcement tools — but use them as a last resort and follow the process exactly, because a fine imposed without written particulars and an opportunity to respond will not survive. Making a complaint to your strata and strata bylaw enforcement and fines in BC cover the sequence. Note also that hoarding, which is a genuine and recurring cause of infestation, can engage the duty to accommodate under human rights law, and warrants advice rather than a fine.

Choosing and using a pest contractor

Ask for the licence — pest control operators in BC are licensed — and for proof of insurance. Ask what they will do beyond treatment: a contractor who inspects, identifies entry points and reports on conditions is worth considerably more than one who sprays and leaves.

Prefer integrated pest management: identify the species, find the source, remove the conditions supporting it, use the least aggressive effective control, then monitor. Ask for written reports after every visit, with findings and recommendations, and act on the recommendations — a council that pays for four inspection reports and ignores all of them has bought nothing.

Get the recurring service agreement reviewed rather than auto-renewed. Monthly visits to a building with no active problem may be worth less than an annual exclusion inspection plus responsive callouts, or may be exactly right — but somebody should be asking.

Fold recurring pest work into the maintenance register so it is tracked like everything else; getting common property repairs actually done covers that workflow. Ordinary pest control is an operating expense, funded from strata fees — see what do strata fees cover in BC.

Frequently asked questions

Who pays for pest control in a BC strata — the owner or the strata? Common property is the strata corporation's responsibility and the interior of a strata lot is generally the owner's. Where an infestation travels through common property or affects multiple units — rodents, cockroaches, bed bugs — building-wide treatment coordinated and paid for by the strata is usually the only approach that works.

Can a strata still use rodent poison in BC? Not in the way it once could. British Columbia has permanently restricted second-generation anticoagulant rodenticides largely to essential services, which a residential strata generally is not. Licensed contractors should be relying on trapping, monitoring and exclusion instead.

What can a strata do about chafer beetles in the lawn? Apply nematodes in the narrow mid-to-late summer window when grubs are young, mow higher, water deeply and less often, and overseed with tall fescue. Many BC municipalities restrict cosmetic pesticide use, so check local rules before considering chemical options.

Should a strata exterminate bees in a wall? Not if they are honey bees. Contact a beekeeper, who will often remove a swarm at little or no cost. Wasps and hornets are a genuine hazard and are handled by a licensed pest contractor. Photograph the insects before authorising any treatment, because the two are routinely confused.

Can a strata fine an owner for causing a pest infestation? Only where a bylaw was contravened and the full process was followed — written particulars, a reasonable opportunity to answer including a hearing if requested, and written notice of the decision. A fine-first approach also discourages early reporting, which makes infestations worse and more expensive.

Related reading

• Who's Responsible? Strata vs Owner Repairs and Maintenance in BC
• Getting Common Property Repairs Actually Done: A Council Workflow
• Common Property vs Limited Common Property in BC Stratas
• Strata Bylaw Enforcement & Fines in BC: How to Do It Right
• Snow Removal and Winter Maintenance: A BC Strata's Responsibilities

Rodenticide restrictions and pesticide rules are published by the BC government, and the repair and maintenance duties sit in the Strata Property Act.

Sealing the gaps beats spraying the symptoms, every year. Onehive provides strata management across Metro Vancouver — request a proposal.