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Ottawa's first hard frost usually lands before Halloween. Here's the October checklist that prevents frozen pipes, failed furnaces, and emergency calls in January — plus the temperature rules landlords are legally required to meet.
Every October, Ottawa landlords face the same quiet deadline — and every January, the ones who missed it pay for it. A frozen pipe or a furnace that quits during a cold snap can mean a burst line, a tenant displaced to a hotel, an insurance claim, and a repair bill that runs into the thousands. Most of it is preventable with work done now, while contractors are still available and before the ground freezes.
This isn't a generic checklist. It's the specific sequence Ottawa landlords should complete in October, mapped to the way this city actually gets cold.
The Ottawa timeline
First overnight frost in Ottawa typically arrives between early and mid-October. Sustained freezing temperatures usually begin in November. Anything that requires outdoor work — eavestroughs, exterior pipe insulation, snow contracts — should be finished by the end of October.
A failed furnace in a rental is not just a comfort problem — in Ontario it's a legal problem. Under the Residential Tenancies Act, landlords must maintain a minimum temperature of 20°C in living areas. Ottawa's own property standards bylaw reinforces this. If a furnace fails in January and you can't prove it was serviced, you're exposed.
What to do in October:
Frozen pipes are the classic Ottawa rental disaster. Water expands when it freezes, and the damage shows up as a burst when it thaws. The risk concentrates in specific places: exterior wall runs, unheated basements, garages, and hose bibs.
Ottawa has a large tree canopy. Full eavestroughs trap water that freezes, backs up under the roof edge, and creates ice dams. Those dams force meltwater into the attic and down interior walls — an expensive, recurring problem.
Clear eavestroughs and downspouts in October, and check that downspouts discharge well away from the foundation. Make sure grading slopes away from the house so meltwater doesn't pool at the base wall and work into the basement.
Snow removal contracts are cheapest and most available in October. By the time the first major snowfall arrives, contractors are at capacity and pricing climbs. If your lease puts snow clearing on the landlord — or on the tenant for shared areas — get the contract signed now and confirm in writing who clears what.
Also worth doing in October: service the snow blower and check that any exterior lighting works, since dark afternoons arrive fast.
Half of winter risk is human. In October, send tenants a short, written winter notice covering:
Keep a copy. If a dispute arises later, documented notice is your defence.
Furnace: tune-up booked, filter replaced, system tested
Pipes: hose bibs drained, exposed lines insulated, air leaks sealed
Drainage: eavestroughs cleared, downspouts discharging away from foundation
Snow: removal contract signed, responsibilities confirmed in writing
Safety: smoke and CO detector batteries replaced
Tenants: written winter notice sent and filed
The reason October matters so much is timing. Problems found now can be fixed on a normal schedule at normal prices. Problems discovered in January become emergencies — premium rates, emergency call-outs, and the risk of a tenant dispute over habitability.
This is one of the clearest reasons landlords use professional property management in Ottawa. A scheduled fall walkthrough, a standing relationship with HVAC and plumbing contractors, and a documented process for tenant communication turn winter from a source of emergencies into a routine. Where no manager is in place, coordinating this work yourself falls squarely under maintenance coordination.
By the end of October. First overnight frost in Ottawa typically arrives between early and mid-October, and anything requiring outdoor work — eavestroughs, exterior pipe insulation, snow removal contracts — should be completed before the ground freezes.
A minimum of 20°C in living areas. This is an obligation under the Residential Tenancies Act, reinforced by Ottawa's property standards bylaw. A landlord who can't show the heating system was maintained is exposed if a furnace fails in winter.
It depends on what the lease says. Many Ottawa leases assign snow clearing to the landlord, or to the tenant for shared areas only. Whatever the arrangement, confirm it in writing before winter and book a snow contract in October while contractors still have availability.
Shut off and drain exterior hose bibs before the first hard freeze, insulate exposed pipes in basements and along exterior walls, seal air leaks where pipes pass through exterior walls, and make sure both you and your tenant know where the main water shut-off is.
Ottawa Prime Properties runs scheduled seasonal maintenance across every property we manage — so October deadlines never get missed. Get a free rental analysis.
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