5 Foundation Checks You're Forgetting Every Spring (Do This Now)

TL;DR: Spring is when frozen, saturated soil shifts the most under your house, so this is the season to walk the perimeter and check for new cracks, poor grading, sticking doors, and standing water near the foundation. Catching a hairline crack or a downspout dumping water at the base now can save $10,000-$25,000 in later structural repair. Five minutes with a flashlight and a level beats a call to a foundation contractor in August.

_Last reviewed: July 2026 · 7 min read_

Winter freeze-thaw cycles push and pull the soil around your foundation more than any other season, and most homeowners don't look until a door won't close or a crack runs across the drywall. By then the movement has been happening for months. Here's what to check every spring before small shifts turn into structural repairs.

Okoniq Property Hub logs your foundation checks and photos by date, so you can see whether a crack from last spring grew or stayed the same.

Why does spring matter most for foundation checks?

Spring matters because thawing soil holds more water than any other time of year, and that saturated soil expands and contracts as temperatures swing between freezing nights and warm days. This movement puts direct pressure on your footings, and it's the single biggest driver of new foundation cracks in climates that see a real winter.

Homes on clay-heavy soil are hit hardest, since clay can swell by 10% or more in volume when saturated. If your house sits on clay or expansive soil, mark early spring, right after the last hard freeze, as your annual foundation check date. Waiting until summer means the ground has already dried and re-settled, and you'll miss the window where fresh movement is easiest to spot.

How do you spot new foundation cracks before they widen?

Walk the full exterior perimeter with a flashlight and check every visible section of foundation wall, paying close attention to corners and areas near downspouts. Vertical cracks under 1/8 inch are usually just settling and not urgent, but horizontal cracks, stair-step cracks in block or brick, or any crack wider than 1/4 inch signal active movement and need a professional look.

Take a photo next to a tape measure or coin for scale, and check the same spots again in 60 days. If a crack grew even slightly, that's the sign to call a structural engineer rather than wait for next spring. This same logic applies below grade too. If you notice unexplained damp spots on a slab, it's worth reading about signs of a slab leak under your floor, since slab leaks and foundation cracks often get confused for one another.

Is your grading and drainage sending water toward the house?

Your soil should slope away from the foundation at least 6 inches over the first 10 feet, and if it's flat or sloping toward the house, water is pooling right where you don't want it. Standing water against a foundation wall for even a few hours after rain adds hydrostatic pressure that pushes cracks wider over time.

Check where your downspouts discharge. They should extend at least 4 to 6 feet away from the foundation, not dump straight down next to the wall. This is one of the most common and cheapest fixes available, covered in detail in 6 downspout mistakes that send water into your basement. If you're seeing damp basement walls every spring, also check signs your downspouts are dumping water in the wrong place, since regrading around the foundation solves more basement moisture problems than any sealant or sump pump upgrade.

| Grading Sign | Fix Needed | Rough Cost | |---|---|---| | Soil flat or sloped toward house | Regrade with topsoil, slope away 6 in per 10 ft | $300-$1,500 | | Downspout discharges within 2 ft of wall | Add extension or splash block | $15-$75 per downspout | | Mulch bed built up against siding | Pull mulch back 6 in from foundation | Free, 30 minutes |

Are doors and windows telling you something about foundation movement?

Doors and windows that stick, stop latching, or develop new gaps at the top or side are one of the earliest signs of foundation settling, often showing up before any crack is visible. Interior doors are especially telling because they're not exposed to weather swelling, so if a door that closed fine last fall now drags on the frame, the frame itself has likely shifted.

Check every exterior door and a handful of interior ones each spring. Note which direction they're rubbing (top, bottom, or one side), since that tells a contractor which way the foundation is moving if it comes to that. Small adjustments like planing a door are normal in any house. A pattern across multiple doors and windows on the same side of the house in the same season is what warrants a professional foundation assessment.

What about crawl space and basement humidity?

Crawl space and basement humidity above 60% in spring points to moisture intrusion that's often tied to the same drainage and grading issues affecting your foundation. High humidity encourages wood rot in floor joists and creates the damp conditions that make foundation cracks worse over time by keeping the soil around footings saturated longer than it should be.

A $15-$20 hygrometer left in the crawl space for a week will tell you where you stand. If humidity stays high even after fixing obvious grading problems, a vapor barrier or dehumidifier is the next step, and if you notice water actively pooling rather than just humidity, it's worth ruling out plumbing first with reasons water pools under your water heater before assuming it's a foundation drainage issue.

FAQ

How much does foundation crack repair typically cost?

Hairline crack injection with epoxy or polyurethane runs $300-$800 per crack, while structural repairs involving underpinning or piers for active settling can run $10,000-$25,000 depending on the extent of the damage.

Can I fix foundation drainage myself?

Yes for grading and downspout extensions, which most owner-operators can handle in a weekend for under $200 in materials. French drains or exterior waterproofing membranes usually require a contractor and run $3,000-$12,000 depending on foundation length.

How often should I check my foundation?

Check twice a year at minimum, once in early spring after the last freeze and once in fall before winter, plus anytime after a major storm or drought.

Do foundation cracks always mean a serious problem?

No. Most vertical cracks under 1/8 inch are cosmetic settling common in homes under 5 years old. Horizontal cracks, stair-step cracks, or cracks that widen over a 60-day period are the ones that need engineer evaluation.

What's the difference between foundation settling and a slab leak?

Settling shows up as cracks in walls and sticking doors from soil movement, while a slab leak comes from a broken pipe under the concrete and usually shows as a warm spot on the floor, rising water bills, or damp carpet with no clear grading cause.

This is educational information, not structural engineering advice. Call a licensed structural engineer or foundation contractor if you see active cracking, doors sticking on multiple sides of the house, or standing water against your foundation for more than a day.