Almost every expensive home repair started as a cheap one that nobody looked at. A slow drip becomes a subfloor. A clogged gutter becomes a fascia board. A neglected condenser becomes a compressor.
You don't need a spreadsheet. You need four short passes a year and a willingness to call someone when a check turns up something real.
Spring
- Service the air conditioning before the first hot week, not during it — schedules fill fast and emergency rates are real.
- Clear the gutters and downspouts, then check that water is discharging well away from the foundation.
- Walk the roofline from the ground with binoculars: lifted shingles, damaged flashing, anything sagging.
- Check exterior caulk and paint around windows and doors, which is where water gets in.
- Test the sprinkler or irrigation zones and look for heads spraying the siding rather than the lawn.
Summer
- Change HVAC filters on schedule — monthly if you have pets, otherwise every 60 to 90 days.
- Keep two feet of clearance around the outdoor AC unit and rinse the coil fins gently if they're dirty.
- Check for standing water after heavy rain; where it pools is where your next foundation problem starts.
- Trim branches back from the roof and siding before storm season, not after.
- Look under every sink and around the water heater for the beginnings of a stain.
If you're in a hurricane or heavy-storm region, the pre-season pass matters more than any other item on this page — and every contractor in your area is booked solid the week after a storm.
Fall
- Service the heating system before the first cold snap, for the same reason as spring AC.
- Clear the gutters again after the leaves have actually dropped, not partway through.
- Have the chimney and flue inspected if you burn anything.
- Seal drafts around doors, windows, and any penetration through an exterior wall.
- Shut off and drain exterior spigots in any climate that freezes.
Winter
- Test smoke and carbon monoxide detectors and replace the batteries.
- Keep an eye on attic insulation and ventilation — ice damming upstream shows up as a ceiling stain downstream.
- Know where your main water shut-off is before you need it at two in the morning.
- Watch for condensation on windows and in the attic, which is the early signal for a moisture problem.
- Run rarely-used fixtures occasionally so seals and traps don't dry out.
The monthly two-minute pass
Once a month, do a lap: look under the sinks, glance at the water heater, check the filter, and walk the perimeter of the house. You're looking for water, stains, and anything that has changed since last time.
That's the whole system. Water is what destroys houses, and it almost always announces itself before it does real damage.
When to stop and call someone
Anything involving your electrical panel, gas lines, structural framing, or work that puts you on a steep roof is worth handing to a licensed pro. So is any stain that keeps coming back after you've dried it — that means the source is still active and hidden.
The goal of a checklist like this isn't to do everything yourself. It's to notice things early, when you're choosing a contractor calmly instead of calling whoever answers.