Michigan Home Inspection Findings For Every Month of the Year

After hundreds of inspections across Metro Detroit, one thing is clear: every season reveals something different. Michigan's weather puts homes through a full range of stress — from January freeze-thaw cycles to July heat loads to October furnace wake-ups. Knowing what to expect each month makes you a better advocate for your buyers and a smarter advisor for your sellers.

Here's what I actually find on the ground, month by month.

What January Inspections Reveal in Michigan Homes

Common Findings

Furnace Maintenance Issues: Many furnaces haven't been professionally serviced in years. Dirty filters, weak blower motors, and delayed ignition reduce efficiency and can lead to mid-winter failures.

Ice Damming Evidence from Freeze-Thaw Cycles: Michigan's freeze-thaw patterns reveal themselves inside attics. Water staining from ice dams shows up frequently — and most buyers don't know to look for it.

Attic Ventilation Problems: Inadequate ventilation shows up as frost accumulation in attics during January cold. This isn't just an insulation issue — it's a ventilation design problem that can age your roof prematurely.

Sump Pumps That Haven't Been Tested Since Fall: Many pumps sat dormant through early winter. When spring melt comes, buyers discover failed pumps the hard way. I test every one.

What This Means for Buyers

These are typically manageable issues, not deal-breakers. Understanding them helps buyers negotiate intelligently and plan their first-year budget.

Pro Tip for Your Listings

Suggest sellers service their furnace now. A recent service sticker with clean filters removes one negotiation point before inspection day.

January Home Maintenance Checklist

• Replace furnace filters monthly during heating season

• Check attic for frost buildup after cold snaps

• Test sump pump operation

• Keep snow cleared from foundation perimeter

• Inspect roof from ground for ice dam formation

Late Winter Surprises: February Inspection Findings

Common Findings

Frozen Hose Bibs That Weren't Winterized Properly: Michigan's coldest month reveals which exterior faucets weren't properly shut off from inside. Frozen pipes found during inspection can delay closing while repairs are made.

Moisture in Crawl Spaces from Snow Melt: As temperatures fluctuate, snow melts and finds its way into crawl spaces. I'm finding standing water, moisture on floor joists, and early signs of mold growth.

Caulking Failures Around Windows: Cold weather reveals gaps in caulking that summer heat keeps sealed. I'm seeing drafts, moisture intrusion, and air leakage around windows that looked fine in warmer months.

Exhaust Vents Terminating in Attics: Bathroom and kitchen exhaust fans that vent into attics create obvious moisture damage in February. You can see frost, wet insulation, and mold growth clearly.

What This Means for Buyers

February inspections often reveal winter-specific issues that wouldn't show up in summer. This can work to a buyer's advantage in negotiations.

Pro Tip for Your Listings

Check that all exterior faucets are shut off from inside. A burst pipe found during inspection creates urgency that benefits no one.

February Home Maintenance Checklist

• Verify all hose bibs are shut off inside

• Check crawl spaces for moisture after thaws

• Inspect caulking around windows and doors

• Clear snow from window wells

• Monitor for ice dam damage

Spring Thaw Revelations: March Inspection Findings

Common Findings

Roof Damage from Winter Ice: As snow melts, I'm finding lifted shingles, damaged flashing, and compromised roof penetrations that winter ice created. What looked fine in January shows its damage in March.

Gutter Damage from Ice Weight: Heavy ice takes its toll. Pulled-away gutters, damaged hangers, and separated seams show up as snow melts and water starts flowing again.

Foundation Cracks That Have Widened Over Winter: Michigan's freeze-thaw cycle is hard on foundations. Hairline cracks from October are now 1/4" wide. I measure and document all foundation cracks I find.

Grading Issues Now Visible as Snow Melts: Poor grading hidden under snow becomes obvious as things melt. I'm seeing water pooling against foundations and improper drainage that will cause basement water in April.

What This Means for Buyers

March is one of the best months for home inspections — winter damage is visible, spring problems are predictable, and you can negotiate repairs before they become emergencies.

Pro Tip for Your Listings

Clean gutters now. Backed-up gutters during spring rains are an easy target for buyer negotiations.

March Home Maintenance Checklist

• Inspect roof for winter damage

• Clean gutters and downspouts

• Check foundation for new or widened cracks

• Verify proper grading away from house

• Service sump pump before April rains

Spring Rain Testing: April Inspection Findings

Common Findings

Basement Water Intrusion from Spring Rains: April showers reveal which basements have water problems. I'm finding active seepage, failed waterproofing, and foundation cracks that leak when tested by heavy spring rain.

Sump Pump Failures: April is the first real test of sump pumps after winter dormancy. Failed pumps, stuck floats, and undersized systems show up when rain arrives.

Roof Leaks That Winter Masked: Snow on the roof can hide problems. April rain reveals roof leaks that were there all winter but couldn't penetrate snow and ice layers.

Carpenter Ant Activity Beginning: These wood-destroying insects wake up with spring warmth. I'm finding active colonies, damaged wood, and entry points that need treatment.

What This Means for Buyers

April inspections done during or just after rain events provide the best evidence of water intrusion issues. Dry weather inspections might miss critical problems.

Pro Tip for Your Listings

Test sump pumps before listing. April showers reveal which pumps actually work. A failed pump during inspection creates costly delays.

April Home Maintenance Checklist

• Test sump pump operation during rainstorm

• Inspect basement for any water intrusion

• Check roof for leaks after heavy rain

• Extend downspouts away from foundation

• Look for carpenter ant activity around wood

AC Season Begins: May Inspection Findings

Common Findings

AC Units That Won't Start: The first 80-degree days reveal which AC units actually work. Dead capacitors, seized compressors, and refrigerant leaks show up when buyers first test cooling.

Deck and Porch Deterioration: Winter takes its toll on exterior wood. Rotted deck boards, loose railings, deteriorated stairs, and structural concerns are now visible without snow cover.

Exterior Paint and Siding Issues Post-Winter: Failed paint, damaged siding, and moisture intrusion points that winter revealed are now obvious. Spring sun and rain make these issues clear.

Window Seal Failures: Foggy windows show up more obviously in spring sun. Failed seals between double-pane glass become apparent as temperature differences increase.

What This Means for Buyers

May is prime buying season, which means inspection scheduling fills quickly. Book early to avoid delays in hot markets.

Pro Tip for Your Listings

Service AC units now. Buyers always test AC in May, and dead units kill transaction momentum. A $150 service call prevents thousands in negotiations.

May Home Maintenance Checklist

• Test AC system on first warm day

• Inspect deck/porch for winter damage

• Power wash siding and check for damage

• Service AC before peak cooling season

• Repair or replace damaged screens

Summer Heat Testing: June Inspection Findings

Common Findings

Inadequate Attic Ventilation: Summer heat reveals ventilation problems clearly. I'm finding attics hitting 140+ degrees due to poor ventilation, which ages roof shingles prematurely and drives up cooling costs.

Sprinkler System Issues: First use of irrigation systems reveals broken heads, damaged lines, and controller problems. Water waste and landscape damage follow.

Termite Activity Evidence: Warm weather brings termite swarms. I'm finding evidence of previous activity, current infestations, and conditions conducive to termite problems.

Pool Equipment Problems: For homes with pools, first seasonal startup reveals what broke over winter — failed pumps, cracked filters, damaged heaters, and equipment that needs replacement.

What This Means for Buyers

June inspections in hot weather stress-test cooling systems and reveal ventilation issues that affect both comfort and long-term roof life.

Pro Tip for Your Listings

Check attic ventilation. I always note inadequate ventilation, and it's a concern buyers take seriously when temperatures are high.

June Home Maintenance Checklist

• Check attic temperature and ventilation

• Test and adjust sprinkler system

• Look for termite activity signs

• Service pool equipment (if applicable)

• Monitor AC system performance

Peak Cooling Demands: July Inspection Findings

Common Findings

AC Systems Struggling to Keep Up: Undersized or aging systems can't maintain comfortable temperatures. I'm finding units running constantly, unable to reach thermostat settings, revealing capacity issues.

Electrical Panel Heat Issues from AC Load: Peak electrical demand reveals marginal electrical panels. Hot breakers, buzzing panels, and overloaded circuits show up when AC runs continuously.

Dried Out Caulking and Weather Stripping: Summer heat and sun damage caulking around windows and doors. Failed seals allow air infiltration that wastes energy.

Concrete Cracks Expanding in Heat: Driveways, walkways, and foundation slabs expand in heat. Cracks that were minor in winter are now significant, sometimes requiring repair.

What This Means for Buyers

July is the best month to truly test AC capacity and electrical system adequacy. If the system can handle July in Michigan, it's adequate.

Pro Tip for Your Listings

Replace AC filters before showings. A dirty filter makes the entire HVAC system look neglected and suggests poor maintenance.

July Home Maintenance Checklist

• Monitor AC system performance on hottest days

• Replace AC filters monthly

• Inspect electrical panel for heat issues

• Re-caulk windows and doors as needed

• Water foundation during extreme heat/drought

Late Summer Checks: August Inspection Findings

Common Findings

Wasp and Bee Nests in Soffits and Attics: Peak insect activity means I'm finding active nests in eaves, soffits, attics, and wall voids. These need professional removal before they become structural or safety issues.

Vegetation Touching House: Peak growth season means overgrown shrubs, trees touching roofs, and vines on siding. Vegetation against the house holds moisture and provides pest access.

Drainage Problems During Summer Storms: Intense summer thunderstorms reveal drainage issues. I'm finding water pooling, erosion, and basement seepage during heavy rain events.

Worn Roof Conditions More Visible: Bright summer sun makes roof wear highly visible. Missing granules, curling shingles, and deteriorated conditions show clearly from the ground.

What This Means for Buyers

August inspections during or after storms reveal drainage issues clearly. Schedule inspections to coincide with rain events when possible.

Pro Tip for Your Listings

Trim all vegetation away from the house. Overgrowth suggests poor maintenance to buyers and makes homes look neglected.

August Home Maintenance Checklist

• Remove wasp/bee nests professionally

• Trim vegetation away from house

• Inspect roof from ground for wear

• Check drainage during heavy rain

• Monitor basement for moisture

Fall Preparation: September Inspection Findings

Common Findings

Chimney and Fireplace Issues: First tests before fall reveal chimney problems. I'm finding cracked flues, damaged caps, creosote buildup, and fireplace safety issues before heating season.

Aging Furnaces Before Heating Season: Pre-season furnace testing reveals which systems are near end of life. Cracked heat exchangers, failed igniters, and weak blowers show up before you need heat.

Gutter Guards Full of Debris: Summer growth fills gutter guards with seeds, leaves, and organic matter. These need cleaning before fall leaf drop or they'll cause overflow.

Mice Entry Points: Rodents are looking for winter homes. I'm finding gaps around pipes, damaged soffit vents, and foundation openings that need sealing before cold weather.

What This Means for Buyers

September is ideal for inspections — you can test both AC (still warm) and furnace (cool mornings), giving complete HVAC evaluation.

Pro Tip for Your Listings

Have chimneys inspected if used. Chimney repairs in September prevent surprises during winter buyer inspections.

September Home Maintenance Checklist

• Have chimney inspected and cleaned

• Test furnace operation on cool mornings

• Clean gutters and gutter guards

• Seal rodent entry points

• Service both AC and furnace systems

Heating Season Begins: October Inspection Findings

Common Findings

Furnace Issues on First Cold Days: When buyers test heat for the first time, problems appear. Failed igniters, cracked heat exchangers, and non-functional systems reveal themselves when needed.

Missing or Damaged Storm Windows: As homeowners prep for winter, missing storm windows become obvious. These affect energy efficiency and comfort.

Insulation Deficiencies Becoming Apparent: Cold weather reveals insufficient insulation. I'm finding cold rooms, ice dams forming early, and attic heat loss issues.

Roof Moss and Debris Accumulation: Fall reveals moss growth from summer moisture and debris accumulation from surrounding trees. Both shorten roof life if not addressed.

What This Means for Buyers

October inspections reveal heating system functionality and insulation adequacy before buyers move in and face winter heating bills.

Pro Tip for Your Listings

Fire up the furnace before buyers tour. A non-working furnace in October is a major red flag and negotiation point.

October Home Maintenance Checklist

• Test and service furnace before cold weather

• Install or repair storm windows

• Check attic insulation adequacy

• Clean roof of moss and debris

• Winterize exterior faucets

Winter Prep: November Inspection Findings

Common Findings

Inadequate Insulation: As temperatures drop, insufficient insulation becomes obvious. Cold rooms, ice dam formation, and high heating bills all trace back to poor insulation.

Drafty Windows and Doors: Cold weather reveals air leakage clearly. I'm finding failed weather stripping, gaps around doors, and window seal failures that waste heat.

Bathroom Exhaust Fans Venting Into Attics: Moisture from bathroom exhaust creates obvious frost and condensation problems in November cold. Improper venting causes mold and structural damage.

Heat Loss Through Recessed Lights: Unsealed recessed lighting fixtures leak heat into attics. I find these with thermal imaging, and they're a significant energy waste.

What This Means for Buyers

November inspections during cold snaps reveal energy efficiency issues clearly. Touring cold drafty homes motivates sellers to negotiate.

Pro Tip for Your Listings

Add weather stripping to drafty doors. Buyers touring in November notice every cold draft, and it suggests poor maintenance.

November Home Maintenance Checklist

• Add weather stripping to doors/windows

• Verify bathroom fans vent outside

• Seal recessed lighting fixtures

• Check insulation levels throughout

• Test heating system under load

Holiday Season Issues: December Inspection Findings

Common Findings

Holiday Decoration Damage: Nail holes in roofs from light installations, damaged siding from fasteners, and gutter damage from hanging decorations show up during inspections.

Stress on Electrical Systems from Decorations: Overloaded circuits from holiday lighting reveal marginal electrical systems. Tripped breakers and warm outlets indicate capacity issues.

Frozen Condensate Lines on High-Efficiency Furnaces: December cold freezes furnace condensate drain lines, causing system shutdowns. This is a design/installation issue that needs correction.

Fireplace Dampers Stuck Open or Closed: Unused fireplaces have dampers that freeze or rust in position. Stuck-open dampers waste heat; stuck-closed ones create dangerous conditions.

What This Means for Buyers

December inspections are less common, which can mean better inspector availability and less rushed inspections during the busy season.

Pro Tip for Your Listings

Remove holiday decorations from roof and gutters before listing. Inspector access matters, and damage from decorations needs repair anyway.

December Home Maintenance Checklist

• Remove roof decorations carefully

• Don't overload electrical circuits

• Insulate furnace condensate lines

• Test fireplace damper operation

• Keep snow cleared from vents and meters

Ready to schedule an inspection?

I'm Erik Hodge with HHI Home Inspections. I serve buyers and sellers across Metro Detroit and take pride in thorough, honest inspections that protect everyone at the table.

Schedule online at hhiservice.com or call 248-388-4783.