Foundation Repair in Terrell Hills, TX

Terrell Hills sits at about 800 feet, on the flat ground east of Alamo Heights and west of Fort Sam Houston, where the soil is expansive clay rather than the shallow limestone you find north of Loop 1604. That clay swells when it rains and shrinks hard in a Texas drought, and every cycle moves the foundations sitting on it a little more.

The age of the housing stock makes that movement more visible here than in newer suburbs. Three problems come up again and again in Terrell Hills:

First, original pier and beam foundations from the 1920s to the 1940s. After decades of service, wood beams sag, shims work loose, and the shallow piers those builders used ride up and down with the clay. The house above develops springy, sloping floors and doors that no longer sit square in their frames.

Second, early concrete slabs from the post-war years. Terrell Hills grew fast between 1940 and 1960, and slabs poured in that era are thinner and lighter than what engineers specify today. On expansive clay they crack and tilt at the edges, especially where a large live oak is pulling moisture out of the soil on one side of the house.

Third, old plumbing under the foundation. Cast iron drain lines from the mid-century era corrode and leak, and a slow leak under a slab feeds the clay beneath one part of the house while the rest dries out. That uneven moisture is one of the most common causes of differential settlement we find in this neighborhood.

The mature trees that make these streets beautiful add to the effect. A big oak can dry the clay under one corner of a home every summer, so the same corner drops season after season until it is re-supported properly.