Closing a Haliburton cottage properly comes down to three things: get the water out of everything that can freeze, decide whether the building stays heated or goes fully cold, and make sure your insurance policy's conditions for an unoccupied property are actually met. This checklist walks through each step in order, flags the one point where septic professionals genuinely disagree, and covers the part most owners forget: who is checking on the place after the first big storm.
Winterizing a cottage means removing water from every pipe, pump, tank, trap, and appliance that could freeze, then securing the building, the septic system, and the waterfront for months of little or no use. In Haliburton County, it also means planning for ice storms, long power outages, and snow-covered roads that can keep you from checking in.
Quick Answer: Drain it, decide on heat, read your policy, and line up someone to check on it. Miss any one of the four and a frozen pipe becomes a spring surprise.
Key Takeaways
- Water left anywhere in the system is the main risk. That includes the pressure tank, hot water tank, toilet tanks, drain traps, and the line running out to the lake.
- Only use non-toxic plumbing (RV) antifreeze in traps and toilets. Automotive antifreeze does not belong anywhere near a septic system or a lake.
- Septic advice on fall pump-outs is not unanimous. Ask your septic contractor what suits your tank and your site.
- Most cottage policies attach conditions to an unoccupied property. Know yours before you lock the door, not after a claim.
- Arrange winter checks now. The March 2025 ice storm left thousands of cottages without power for days.
Why Winterizing Matters So Much in Haliburton County
More than half the homes in Haliburton County sit empty for much of the winter. The 2021 Census counted 21,072 private dwellings in the county, but only 9,714 of them were occupied by people who live there year-round. That leaves thousands of cottages heated by a thermostat, or not heated at all, through a Highlands winter.
When something goes wrong in an empty building, nobody notices for days. Water is the leading cause of home insurance payouts in Canada, at more than 30 per cent of property damage claims according to RBC Insurance.
Our team at the Haliburton Gold Group sees the results of good and bad closings every spring, usually at home inspections. A cottage with a documented winterizing routine is simply easier to sell.
When Should You Close Up a Haliburton Cottage?
Close the plumbing before the first sustained hard freeze. For most Haliburton owners that falls between Thanksgiving weekend and early November, depending on elevation and how exposed your water line is. If you visit in late fall, keep the water running until your final weekend, then drain everything at once. Watch the forecast rather than the calendar.
How Do You Drain a Cottage Plumbing System?
Draining the plumbing means shutting off the water supply, opening every tap, and removing water from the pump, pressure tank, hot water tank, lake line, toilets, and fixtures, then protecting drain traps with non-toxic antifreeze. The exact order depends on your setup, so the list below is a starting point to confirm with your plumber.
- Shut off power to the water pump and the hot water tank at the breaker panel.
- Open every tap, indoors and out, both hot and cold, and leave them open.
- Drain the pressure tank and pump using their drain plugs. Store the plugs somewhere obvious for spring, such as taped to the pump.
- Deal with the lake intake line. Some owners pull it from the water; others drain it through a shoreline tap and leave that tap open.
- Empty the hot water tank. Turn off power first and let the water cool before you drain it.
- Empty the toilets. Flush, sponge out what remains in the tank and bowl, and add non-toxic plumbing antifreeze.
- Protect every drain trap (sinks, tubs, showers, floor drains) with plumbing antifreeze so the water seal does not freeze and crack.
- Drain appliances that hold water: dishwasher, washing machine, water softener, and any UV treatment system. Many owners remove UV bulbs and store them at home.
- Leave a note on the panel and the taps saying the system is winterized, so a visitor does not flush a dry toilet in January.
If your plumbing runs through places you cannot see, pay a local plumber to do it once and watch how it is done.
What Should You Do With the Septic System Before Winter?
For a seasonal cottage, the main goals are to make sure nothing in the septic system can freeze, and to leave the tank in a condition that suits your site. Whether to pump the tank in the fall is where the advice divides, so it is worth a direct conversation with your septic contractor.
Many septic companies recommend a fall pump-out so solids are not sitting in the tank all winter. Others are cautious. In a Cottage Life interview, a township septic inspector who sits on the board of the Ontario Onsite Wastewater Association warned that a tank left empty over winter can float if the water table rises in spring, even a concrete one. His suggestion was to pump in late summer instead, so the tank has time to partially refill before close-up.
A tank in high, wet ground carries different risks than one in sandy, well-drained soil, so we won’t pretend there is one answer. What everyone agrees on:
- If your system uses a sewage pump to push effluent up to the bed, have that line drained or otherwise protected.
- Leave the snow on top of the tank and bed. It insulates. Do not plow or pack a path over them.
- Keep vehicles off the leaching bed year-round.
In Dysart et al, check whether your property falls under the municipality's Septic Maintenance Program. Buyers increasingly ask for septic records, so it helps to know where you stand.
Should You Leave the Heat On or Shut the Cottage Down Completely?
You have two workable approaches. Either keep the building heated all winter with a reliable system and regular checks, or drain everything and let it go fully cold. Both can work. The mistake is doing something in between, such as leaving the heat low and the water in, without anyone checking.
| Approach | What it involves | Main risk |
|---|---|---|
| Heated, water on | Furnace or heat pump running, water supply live, regular in-person checks, ideally a remote temperature and power monitor | A power outage or heating failure that nobody notices in time |
| Fully winterized, cold | Water drained, traps protected, power to pumps and tanks off, heat off or at a minimal setting | Missed water somewhere in the system, or a policy that still requires periodic checks |
What Does Your Insurance Policy Require for a Vacant Cottage?
Most cottage policies attach conditions to a property that sits unoccupied. Typically, you either maintain heat and have the building checked on a set schedule, or you shut off the water and fully drain the system. If a pipe bursts and those conditions were not met, the claim can be reduced or denied.
Wording varies by insurer, so read the vacancy or occupancy section of your policy and call your broker if anything is unclear. Keep simple records: when you drained the system, who did it, and a log of winter checks. A texted photo of the thermostat counts.
We covered other common coverage gaps in Avoid These Cottage Insurance Nightmares. If water does get in, our guide to water in your basement and who pays, walks through the first steps.
What Should You Check Outside Before You Leave?
Outside, the job is keeping snow, ice, animals, and falling trees from doing damage while you are away.
- Roof and gutters: clear gutters and downspouts, and look for loose shingles or flashing that could let meltwater in.
- Trees: look up. Dead limbs over the roof, the hydro line, or the driveway are the ones that come down in an ice storm.
- Dock and boats: pull what needs pulling, and secure or remove anything the spring ice could shift.
- Propane and fuel: check tank levels if you heat through the winter, and confirm your supplier can reach the tank once snow arrives.
- Critters: remove food, seal gaps around pipes and vents, and close the chimney damper.
One local note. If fall storm cleanup means cutting or removing trees near the water, the County of Haliburton's Shoreline Preservation By-law applies. After the 2025 ice storm, the County asked shoreline owners to notify it before doing storm-related vegetation removal. Our earlier piece on shoreline tree preservation explains the basics.
Who Checks on the Cottage After a Storm?
Every winterizing plan should name the person who will check the property after a major storm or a long outage, how they will get there, and what they will look for. In Haliburton, that question is not hypothetical.
The ice storm of March 28 to 30, 2025 led the County of Haliburton to declare a partial state of emergency to support Minden Hills, and power restoration took days in parts of the county. Across Ontario, that storm caused about $490 million in insured damage, according to the Insurance Bureau of Canada. Nearly a week after it started, Hydro One still had about 37,000 secondary properties, cottages and trailers mostly, without power, as Renewable Energy World reported from Hydro One's updates.
A heated cottage without power for a week in cold weather ends up either drained or flooded, depending on whether someone got there. A year-round neighbour, a local property check service, or family within driving distance all work. Settle it before you leave, and confirm your road will be plowed so they can get in.
FREQUENTLY ASKED QUESTIONS
When should I winterize my cottage in Haliburton?
Before the first stretch of sustained hard frost, which for most Haliburton owners falls between Thanksgiving weekend and early November. Exposed lake lines and shoreline pumps freeze first, so if yours are exposed, close up earlier. Watch the forecast rather than a fixed date.
What kind of antifreeze do you put in cottage plumbing?
Use non-toxic plumbing antifreeze, often sold as RV or marine antifreeze. It goes into toilets and drain traps to protect the water seal. Never use automotive antifreeze, which is toxic and should not enter a septic system or reach the lake.
Should I pump my septic tank before closing the cottage for winter?
It depends on your tank and site. Some contractors recommend a fall pump-out, while others warn that an empty tank can float in a high spring water table and suggest pumping in late summer instead. Ask your septic contractor which suits your property.
Is it better to leave the heat on at the cottage in winter?
Either approach works if done properly. A heated cottage needs a reliable system and regular checks. A cold cottage needs every drop of water removed. The risky option is low heat with water left in the pipes and nobody checking.
Will my insurance cover a burst pipe at my cottage?
Often, yes, if you met your policy's conditions for an unoccupied property. Those usually require maintained heat with regular checks, or a fully drained system. Read your policy's vacancy section, keep records of what you did, and ask your broker if anything is unclear.
Local Knowledge, Close to Home
Jeff Wilson (Owner & Sales Representative) and Jess Wilson (Owner & Broker) lead the Haliburton Gold Group, with more than 40 years of combined real estate experience in Haliburton, Minden, and the surrounding Highlands and over 1,000 transactions. Much of that work involves seasonal properties, and the questions in this guide about pumps, septic records, and winter access come up in almost every cottage sale.
Thinking About Selling in the Spring?
Buyers notice a well-kept cottage, and more of them are asking for proof: septic records, a winterizing routine, a clean inspection. If you are considering a spring sale, the months when the cottage is closed are the best time to plan. Talk to the Haliburton Gold Group about what to have ready before you list.
Learn More
