Foundation Repair & House Leveling in San Juan, TX.

San Juan sits on the Hidalgo–Raymondville clay loam transition between Pharr and Alamo, on a Pleistocene delta plain that's been heavily irrigated for over a century.

Soils are predominantly Hidalgo sandy clay loam with Raymondville clay loam pushing in from the south, PI typically 28–45 and 'moderate to high' shrink-swell.

The Basilica-area downtown sits on slightly deeper clay than the surrounding agricultural land.

The North Alamo Water Supply canals and decades of citrus irrigation have raised the baseline moisture content above natural levels, so summer drydown produces sharper perimeter shrinkage than the soil would naturally see.

Concrete piers driven 12–14 feet are the engineered answer for most San Juan slabs.