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Millions of years of geologic history left North Texas with soil that moves — here's what that means for your home.
Millions of years ago, North Texas was covered by a shallow inland sea. As the sea receded, it left behind thick layers of clay-rich sediment that now sit beneath most homes in Frisco, McKinney, and the surrounding area.
This clay soil absorbs water when it's wet and expands, then loses moisture and shrinks as it dries. That constant cycle of expansion and contraction causes the ground beneath your foundation to move — Clay-soil movement can be one common cause of cracking in North Texas homes and sticking doors homeowners notice here.
Clay absorbs water and swells.
Clay loses water and contracts.
Your foundation moves with the soil.
Maintain consistent moisture around your foundation.
Ensure proper drainage and gutter flow.
Keep large tree roots away from the foundation.
Watch for changes and address issues early.
Yes! Minor movement and small cosmetic cracks are normal in North Texas homes. It's part of living on clay soil, and most homes settle into a stable pattern of seasonal movement over time.
Large cracks, stair-step brick cracks, or doors that no longer close may need further evaluation. Learn more about warning signs on our next page.
We're happy to help you understand what's normal and what's not.