Soft or sloping floors, sticking doors, new cracks and a musty crawl space are the most common signs. Here is what to look for, what is usually cosmetic, and when to get a free inspection.
✓Wet groundThe Chatham County plan calls the county flat, with soil that drains poorly and water close to the top. USDA soil maps show water 12 to 30 inches down for months each year in Ocilla soil. Damp ground under a slab or a crawl space is where a lot of foundation trouble starts here.thempc.org
✓Damp air under the floorBuilding science studies show that vented crawl spaces in humid places take on the damp outside air. The air gets even damper as it cools near the ground. That damp feeds mold and rot in the wood that holds up the floor.energyvanguard.com
✓Storms and floodsHurricane Irma pushed the Fort Pulaski tide gauge to 12.24 feet in 2017, says the National Weather Service. In August 2024, Tropical Storm Debby dropped about 10 inches of rain on Savannah. Flood water fills crawl spaces and can wash soil from around foundations.weather.gov
✓Soft and filled groundMarsh soils like Capers are soft and drain slowly. Capers is mapped in Chatham County. Part of Ardsley Park was built on a filled-in bog, says its U.S. historic record.soilseries.sc.egov.usda.gov
✓Old homesMany Savannah homes are a hundred years old or more. The Historic District has grey brick houses on raised basements, says the Historic Savannah Foundation. Ardsley Park, begun in 1909, is all wood-framed houses. Old wood and old mortar wear out.myhsf.org
Your house usually tells you early
Foundation and crawl space problems rarely show up all at once. They start small. A door rubs. A soft spot shows up in the floor. Or a smell appears that was not there last summer. Most people notice the signs months or years before the problem gets expensive.
In Savannah, the signs often point to water. Wet ground, humid air and storm flooding are the usual causes. Here is what to look for, inside, outside and under the house.
Signs inside the house
Floors that slope. A ball or marble rolls to one side of the room.
Soft or bouncy floors, often in a hallway, kitchen or bathroom.
Doors that stick, drag, or will not latch, especially if it is new.
Doors that swing open or shut on their own.
Cracks over doors and windows, often running at an angle from the corner.
Gaps where the wall meets the ceiling, or where trim pulls away.
Cracked floor tile in a line across a room.
A musty smell that comes up through the floor.
Higher humidity inside than you would expect with the air on.
Signs outside the house
Stair-step cracks in brick, following the mortar lines.
Cracks in stucco, often from window corners.
A corner of the house that looks lower than the rest.
Gaps around windows and doors on the outside.
A porch or steps pulling away from the house.
Soil washed away from the edge of the slab or from around piers.
Water that pools against the house after rain.
Gutters that overflow or downspouts that dump right at the wall.
Signs under the house
If your home has a crawl space, look from the access door with a flashlight.
Standing water or a water line on the piers.
Insulation hanging down or lying on the ground.
Dark stains, white fuzz or mold on the wood.
Wood that looks soft, crumbly or darker than the rest.
Brick piers that lean, crack or are missing mortar.
Wood shims that look crushed or rotted.
Mud tubes on the piers, which can be a sign of termites.
Signs that are usually cosmetic
Thin hairline cracks in a slab that stay flat and do not grow.
Small cracks at drywall corners that have not changed in a year.
Doors that stick only in the most humid weeks of summer, then work again.
Short cracks in a driveway or garage slab.
Mark these and watch them. If they stay the same, they are usually fine.
Signs to call about soon
A floor that feels like it is giving way.
A pier that is leaning, cracked through or crumbling.
Standing water under the house that does not drain within a day or two.
Cracks wider than about a quarter inch, or cracks that keep growing.
A crack where one side sits higher than the other.
New cracks or sticking doors after a big storm or flood.
Several signs at once, such as sloping floors plus cracks plus sticking doors.
Why these signs are so common here
In Savannah, most of these signs trace back to water and age. The facts above show how wet the ground stays, how damp the air gets, and how old many homes are. Put those together, and small signs show up early.
How to track what you see
Take photos of each crack or problem spot, with a ruler or coin for scale.
Mark the ends of cracks with a pencil and write the date.
Note which doors stick and when.
Check under the house after a big storm, from the access door.
Write down when you first noticed each sign and whether it changed after rain.
This gives the inspector a clear picture of whether the house is still moving.
What happens next
Call (912) 771-1041 or send the form. Tell us what you are seeing.
Free inspection. A local crew checks your floors, looks under the house or around the slab, and checks drainage.
Written estimate. You get a plan and a price in writing.
You decide. No pressure, no obligation.
Frequently asked questions
Which sign is the most urgent?
A floor that is dropping fast, a pier that is leaning or broken, a door that suddenly will not open, or a crack that grows over a few weeks. Those mean something is moving now. Call soon.
Is a musty smell a foundation problem?
Not always, but in a raised house it often means damp air or standing water in the crawl space. Over time that leads to mold and rot in the wood that holds up the floor.
Should I check under my house after a storm?
Yes, if you can do it safely. Look from the access door for standing water, fallen insulation and washed-out soil around the piers. Do not crawl into standing water near wiring.
My doors stick only in summer. Is that the foundation?
Doors and windows can swell in humid weather. If they stick every summer and work fine in winter, it may just be humidity. If it is getting worse each year, or comes with cracks or sloping floors, have it checked.
Do new homes get foundation problems?
They can. Newer slab homes can settle in the first years if the fill under them was not packed well or water runs to one side. Check your builder warranty first.
Do I need an engineer first?
Not usually. The free inspection tells you what is going on. If the problem is complex, or a buyer or lender asks for it, a structural engineer report is the next step.
Get your signs checked for free
You do not have to guess. Call (912) 771-1041 or send the short form, and a local crew will call you back, usually the same day. The inspection is free, and the price comes in writing before any work starts.