St. Louis has one of the widest temperature swings in the country — from single-digit cold snaps in January to 100°F humidity in August. That range does real things to a house: expanding and contracting materials, driving moisture into gaps and cracks, straining HVAC systems, and accelerating the wear on roofing, windows, and exterior surfaces.

The homeowners who spend the least on repairs over time aren't the ones who fix things when they break. They're the ones who work through a seasonal checklist every year, catching small problems before they become expensive ones. This is that checklist — adapted for St. Louis conditions, with realistic cost estimates for each item.

How to Use This Checklist

Not every item applies to every home. A one-story ranch in West County has different maintenance needs than a 1920s bungalow in Maplewood. Use this as a starting framework and mark what applies to your home. The most important thing is consistency — a home that gets checked seasonally ages much better than one that's ignored until something fails.

For tasks that require a professional, we've noted which ones are handyman-appropriate versus which require a licensed contractor or specialist. The goal is to help you plan and budget, not to oversell complexity.

Spring Checklist (March – May)

Spring is inspection season in St. Louis. You're looking for what winter did to your home — and setting up for a dry, comfortable summer.

🌿 Exterior

Inspect and clean gutters
Winter debris accumulates. Check for sagging, loose hangers, and gaps at seams.
Check roof for winter damage
Binoculars from the ground work for most inspections. Look for lifted, missing, or cracked shingles.
Inspect exterior caulking around windows and doors
Freeze/thaw cycles crack caulk. Recaulk anywhere you see gaps or separation from the frame.
Check wood trim, fascia, and soffits for rot
Press a screwdriver gently against suspect areas. Soft or spongy wood needs replacement.
Walk the foundation perimeter
Look for new cracks, settling, or areas where soil has pulled away from the foundation.
Test outdoor hose bibs and irrigation
Run each one and check for leaks at the valve body. Freeze damage often shows up here.

🏠 Interior

Test all smoke and CO detectors
Replace batteries in any that failed the test. Units older than 10 years should be replaced.
Check basement and crawl space for moisture
Spring rains are the highest-risk period for basement infiltration. Look for efflorescence (white mineral deposits) on walls.
Replace HVAC filter and schedule AC tune-up
Before first use of the season. A dirty filter in a heat wave is an expensive repair waiting to happen.
Inspect window and door weatherstripping
Compression seals lose elasticity. If you can slide a dollar bill under a closed door, replace the sweep.

Summer Checklist (June – August)

Summer in St. Louis means heat, humidity, and storm season. The focus shifts to cooling efficiency, moisture management, and storm prep.

☀️ Priority Summer Tasks

Check attic ventilation and insulation
Poor attic ventilation in summer drives up cooling costs and shortens roof life. Soffit and ridge vents should be clear.
Inspect deck, patio, and fence
Check deck boards for splitting and loose fasteners. Apply sealant if water no longer beads on the surface.
Clear dryer vent from exterior
Lint buildup in dryer vents is a leading cause of house fires. Clean annually — more often with heavy use.
Trim trees away from the house
Storm season. Branches within 10 feet of the roof or structure are a liability in a St. Louis thunderstorm.
Check sump pump operation
Pour water into the pit to confirm the float trigger works. St. Louis storm events can overwhelm an untested pump.

Fall Checklist (September – November)

Fall is the most important maintenance window of the year for St. Louis homeowners. You're closing out summer and hardening the house for winter — which can arrive suddenly.

🍂 Fall Priority Tasks

Clean gutters after leaf fall (late October/November)
The single most skipped task that causes the most damage. Clogged gutters in a freeze = ice dams and water behind fascia.
Shut off and drain exterior hose bibs
Before the first freeze. Pipes that freeze at the bib can split back into the interior wall.
Schedule furnace inspection and filter change
Before you need heat. HVAC technicians book up fast in October — schedule in September.
Caulk and weatherstrip before cold sets in
Caulk won't cure properly below 40°F. Get it done before November if possible.
Check chimney and fireplace (if applicable)
Chimney sweeps book solid in October. Schedule early or wait until spring. Don't run a fireplace with an uninspected flue.

Winter Checklist (December – February)

Winter maintenance is mostly about monitoring and preventing damage during cold snaps. Most exterior work has to wait until spring — but there are indoor tasks worth doing.

❄️ Winter Monitoring Tasks

Know your pipe freeze risk zones
Pipes in unheated spaces (garages, crawl spaces, exterior walls) are vulnerable below 20°F. Let faucets drip during hard freezes.
Check for ice dams after heavy snow
Ice buildup at the eave line indicates heat escaping through the roof. Long-term fix is insulation; short-term is a roof rake.
Monitor basement for moisture during freeze-thaw cycles
January and February warm spells in St. Louis can send water into basements as frozen ground thaws quickly.
Address interior repairs during winter downtime
Drywall patching, door adjustments, fixture replacements, painting — all work fine in winter and handymen are less booked.

What This Costs If You Hire It Out

Most homeowners do some of these tasks themselves and hire out others. Here's a realistic cost table for common handyman-appropriate items on this list:

Task DIY Time Handyman Cost
Gutter cleaning (single-story) 2–3 hours $100 – $175
Exterior caulking (windows + doors) 3–4 hours $125 – $250
Weatherstripping replacement (full house) 2–3 hours $100 – $225
Dryer vent cleaning 1 hour $75 – $125
Smoke/CO detector replacement (full house) 1–2 hours $75 – $175 (plus units)
Half-day of miscellaneous seasonal tasks — $200 – $350

The batch approach: The most cost-effective way to use a handyman for seasonal maintenance is to schedule a half-day and batch everything — gutter cleaning, caulking, weatherstripping, and a punch list of other items. One trip charge covers all of it.

Don't Try to Do It All Yourself

The goal of this checklist isn't to turn every homeowner into a general contractor. Some people are good at home maintenance and enjoy it. Most aren't, and that's fine. The point is awareness — knowing what needs attention, when it needs it, and what it should cost.

For help with the handyman-appropriate items on this list, book a handyman online. Describe what you need done, pick a time, and get a confirmed price range within 2 hours.

For background on what these repairs typically cost, see our St. Louis handyman pricing guide. If you've been putting off repairs, our guide to repairs you shouldn't delay explains which ones compound fastest and why.

We serve St. Louis homeowners across the metro — including West County, South City, North County, and St. Charles County.