Foundation Repair in Lewisville and Flower Mound, TX: What Homeowners Should Know

Updated October 2026

Lewisville and Flower Mound sit side by side on the same North Texas clay, but the houses on top of that clay are very different, and that is what decides how a foundation problem shows up and how it should be fixed. This page answers the questions homeowners in both cities ask most before they call anyone.

Does AlphaLift serve Lewisville and Flower Mound?

Yes. Both cities are part of AlphaLift's regular service area in Denton County. The office is in Hickory Creek, a short drive from Lewisville and about twenty minutes from Flower Mound, so crews are local to the area rather than dispatched from across the metroplex. Nearby towns served on the same routes include Highland Village, Lake Dallas, Corinth, The Colony, and Argyle.

Why do foundations move in Lewisville and Flower Mound?

The main cause is the expansive clay soil found across Denton County. It swells when it gets wet and shrinks when it dries out. When one part of the soil under a house dries faster than another, that section of the foundation drops while the rest stays put. That uneven movement is called differential settlement, and it is behind most of the cracks and sticking doors homeowners notice.

Mature trees make it worse. In a dry North Texas summer, a large oak pulls a lot of water out of the clay within reach of its roots, so the side of the house nearest the tree can settle while the far side does not. The fix is almost never removing the tree. It is stabilizing the part of the house that moved.

How are Lewisville homes different from Flower Mound homes?

Lewisville has the widest range of housing ages in the area. Old Town has structures going back to the 1880s, and about a third of the city's homes were built before 1990, mostly in the older sections near I-35E where the trees are now decades old. Then there are newer areas like Castle Hills, where families first moved in around 1998, and 2000s subdivisions west of town. An older slab under mature trees and a newer slab in a recent subdivision tend to fail in different ways and on different timelines. Read more on the Lewisville foundation repair page.

Flower Mound skews larger and more established: big lots, mature trees, and custom or semi-custom homes from the 1990s and 2000s in neighborhoods like Bridlewood and Wellington. Larger homes mean longer slab runs, where movement at one corner can show up across the whole house. Read more on the Flower Mound foundation repair page.

What are the warning signs of foundation problems?

• Doors that stick, will not latch, or swing open on their own
• Cracks above door frames and windows, or diagonal cracks in drywall
• Gaps between brick and trim, or cracks in exterior brick
• Floors that slope or feel uneven

Some hairline cracks are normal with North Texas clay and seasonal movement. Elevation readings are what tell you whether a crack is cosmetic or structural.

How is the repair done?

Slab foundations: steel piers are driven down through the shifting clay to stable ground, then used to lift and support the section of the house that settled.

Pier & beam foundations: the house is releveled by adjusting, replacing, or adding supports under the floor so it sits level again.

Either way, the process is the same: a free inspection with elevation readings across the whole floor, a written repair plan with an exact price that does not change once work starts, then the repair, then a second set of readings so you can see the result.

How much does foundation repair cost?

It depends on how many piers the house actually needs, not on its square footage. A large Flower Mound home with movement in one corner can need fewer piers than a small home with widespread settlement. That is why AlphaLift does not quote a number before measuring. The inspection is always free, the written price covers only what the readings justify, and financing is available.

Frequently Asked Questions