Vacation Home & Seasonal Property Maintenance Checklist
Owning a second home means different upkeep: how to close it up, open it back, and protect it while it sits empty — winterizing, humidity, water shutoff, pests, and security in one checklist.
A second home is a joy to use and a quiet liability to leave. The systems that a lived-in house exercises every day — running water that keeps traps full, heat that dries the air, eyes that notice a drip — all go silent when you lock the door for the season. That's why a vacation home doesn't need more maintenance than your primary home; it needs different maintenance, built around two events: closing it up and opening it back up, with a protection plan for everything in between.
Quick answer: Before you leave a seasonal home, shut off and drain the water, protect the plumbing from freezing, set HVAC or a dehumidifier to control humidity, clear out food and trash, lock it down, and arrange periodic checks. When you return, turn the water on slowly while watching for leaks, restart systems, and inspect for pests, moisture, and freeze damage. The water shutoff is the single most important step.
Why a home you don't live in is different
When you live somewhere, you are the monitoring system. You hear the toilet running, smell the musty corner, notice the ceiling stain on day one. An empty house gives no such warnings — small problems run unchecked until they become catastrophic. The four failure modes that do the real damage to seasonal properties are:
- Water — a failed supply line, water heater, or appliance hose floods the home unnoticed.
- Freezing — water left in unheated pipes expands and splits them, then thaws into a flood.
- Humidity — without climate control, trapped moisture condenses and feeds mold on walls, fabrics, and HVAC.
- Intrusion — pests move into the quiet, and an obviously empty home is a target for break-ins.
Every item on the checklists below maps back to shutting down one of those four threats.
The close-up checklist (leaving for the season)
Work top to bottom. The order matters: water and climate first, because they cause the costliest damage; pests and security last, because they protect what's left.
1. Shut down the water
This is the highest-leverage thing you will do. See how to shut off the water to your house.
| Step | Why it matters |
|---|---|
| Close the main water shutoff | No water flowing means no flood, full stop |
| Open the lowest faucets to drain the lines | Empties standing water that could freeze or stagnate |
| Drain the water heater (long-term cold) | Prevents freeze damage and sediment-stagnation odor |
| Close valves to the washing machine and dishwasher | The most common burst-hose failure points |
| If leaving water ON, install a leak detector + auto-shutoff | Cheap insurance when a caretaker or boiler needs supply |
2. Protect the plumbing from freezing
If your climate ever drops below freezing while you're away, do one of these two things — never neither:
- Keep heat on, set no lower than 55°F. The American Red Cross recommends a 55°F minimum to keep pipes from freezing. This is the simpler option if your trip is short or you keep utilities running.
- Fully winterize. Drain every line, blow out the pipes with air, drain the water heater and any pressure tank, and pour RV/plumbing antifreeze into every drain trap, toilet bowl and tank, and the dishwasher and washing-machine traps so the small amount of trapped water can't freeze and crack the fixture.
Pay special attention to the pipes most likely to freeze: outdoor hose bibs, pipes in the crawl space, attic, and garage, and any run on an exterior wall. Insulating them helps in either mode — see how to insulate water pipes and the full frozen-pipe prevention guide. If a pipe does let go, here's what to do about a burst pipe.
3. Set the climate for "empty"
The goal shifts with the season:
- Winter: heat to a safe minimum (55°F) or shut down entirely after winterizing. Set back, don't turn off, if any water remains in the system.
- Summer: the enemy is humidity, not temperature. Run the AC on a high setpoint or, better, a dehumidifier on a humidistat to hold relative humidity under 50%. This is what keeps mold from blooming across an unattended house.
- Clear the HVAC condensate drain and change the filter before you go so the system runs clean and won't overflow.
4. Power down and de-risk
- Unplug electronics and small appliances to save standby power and remove fire risk.
- Test smoke and CO alarms and replace batteries — a fire in an empty home spreads unseen.
- Test the sump pump and its backup battery if the property floods; a failed sump pump while you're gone means a flooded basement no one catches.
- Turn off the gas to non-essential appliances if you're shutting the home fully down.
5. Starve the pests
- Empty the refrigerator and pantry. Take perishables home; store dry goods in sealed containers.
- Take out every bit of trash and clean the kitchen — crumbs and grease invite mice and insects.
- Seal entry points around pipes, vents, and the foundation; screen chimney and vent caps.
- Set traps in known problem areas. Mice move in within days of a house going quiet.
6. Lock it down and document it
- Lock every door and window; set the security system and cameras.
- Make it look lived-in: light timers, a stopped-mail hold, and a neighbor's car in the drive deter break-ins.
- Photograph the home's condition and store it with your home records — invaluable for an insurance claim.
- Tell a trusted neighbor, caretaker, or property manager you're leaving, and make sure they know where the main shutoff is.
Match the prep to the gap
Not every departure needs the full winterization. Scale your effort to how long — and how cold — the home will sit.
| You're leaving for… | Do at minimum |
|---|---|
| A long weekend, mild weather | Trash out, appliance valves closed, alarms tested, doors locked |
| 2–4 weeks, mild weather | Main water off, fridge cleared, AC/dehumidifier set, check arranged |
| A full season, freezing climate | Full winterize: drain lines, antifreeze in traps, water heater drained, heat at 55°F or off, biweekly checks |
| A full season, hot/humid climate | Main water off, dehumidifier/AC on humidistat under 50% RH, pest seal, biweekly checks |
What skipping the close-up actually costs
The reason this checklist exists is that the failures are slow, silent, and enormous. A few minutes of prep prevents five-figure repairs.
| Task | How often | DIY cost | Pro cost | Prevents |
|---|---|---|---|---|
| Shut off & drain water before leaving | Every close-up | $0 | $75–200 (winterization service) | Catastrophic burst-pipe flood while you're away |
| Dehumidifier on a humidistat | Seasonal | $150–300 unit | — | Whole-house mold remediation ($2,000–6,000+) |
| Leak detector + automatic shutoff valve | One-time install | $150–600 | $400–1,000 | Days of undetected water damage |
| Remote temp/water sensors | One-time + small subscription | $50–250 | — | A missed freeze or leak becoming a gut-renovation |
| What an unnoticed burst pipe can cost | If you skip the basics | — | $10,000–70,000+ | — |
Close-up vs. open-up at a glance
Closing it up
Shut down the threats before you leave
- Shut off and drain the water
- Winterize plumbing or hold heat at 55°F
- Set AC/dehumidifier to control humidity
- Clear the fridge, pantry, and trash
- Unplug, test alarms, test the sump pump
- Lock down, set timers, document, arrange checks
Opening it back up
Restart carefully and inspect
- Turn water on slowly, watching every fixture
- Flush antifreeze from traps; run faucets clear
- Restart water heater and HVAC; replace the filter
- Inspect for leaks, stains, and mold
- Check for pest droppings and chew marks
- Test alarms; walk the exterior for storm damage
The open-up checklist (coming back for the season)
Reopening is not just "flip everything back on" — a careless restart can turn a dry winter into a wet welcome. Go in this order:
- Walk the exterior first. Look for roof, gutter, and storm damage before you even unlock the door.
- Turn the water on slowly. Crack the main shutoff part-way and listen. Then check every faucet, under every sink, behind appliances, and at the water heater for leaks before you walk away.
- Flush the antifreeze. Run each faucet and flush toilets until the water runs clear; the trap antifreeze is non-toxic but you want it gone.
- Restart systems one at a time. Refill and relight the water heater, restart HVAC, and replace the HVAC filter.
- Inspect for the silent damage: water stains, musty smells, mold, and any sign of pests (droppings, chew marks, nests). Check the sump pit and test the pump.
- Reset the basics: alarms, thermostats, and your light timers back to normal.
Remote monitoring: eyes on the house when you're not there
You can't visit every week — but a handful of inexpensive sensors can watch the home for you and turn a disaster into a phone alert:
- Temperature sensors warn you if the heat fails before pipes freeze.
- Water/leak sensors (placed at the water heater, washer, and low points) catch a leak in minutes; pair one with an automatic shutoff valve for true peace of mind.
- Humidity sensors confirm your dehumidifier is actually holding the line under 50%.
- Security cameras and door sensors deter intrusion and let you verify a caretaker's visit.
None of this replaces a human walkthrough — many insurers require periodic in-person checks — but it shrinks the window between "something went wrong" and "someone knows" from months to hours.
Make the close-up / open-up a saved routine
The reason second-home owners get burned isn't laziness — it's that the close-up always happens in a rush at the end of a trip, when you're tired and packing the car. The fix is the same one that works for a primary home: a saved, repeatable checklist you run every single time, so nothing depends on memory.
Owner Tools keeps your property's specific open-up and close-up tasks in one place — free, no login or address required — so protecting a home you visit instead of live in becomes a two-minute habit instead of a season-long worry. For a single-trip departure from your primary home, see the pre-vacation checklist; if your seasonal place is a condo, the condo maintenance guide covers what's yours vs. the HOA's.