

Action House Leveling is based in Mercedes, just minutes from Sebastian. You get same-day inspections, a crew that knows the local soil profile, and reinforced concrete piers engineered for the ground under your slab.
Sebastian sits between Lyford and Raymondville on the same slow-draining Raymondville clay loam terrace that defines northern Willacy County.
Soils are Raymondville clay loam with pockets of Harlingen clay in low spots, PI 35–50, high shrink-swell.
Decades of agricultural irrigation have elevated baseline moisture content, and the flat topography means rain events linger for weeks.
Sebastian's small footprint sits on a slight rise — runoff drains outward in all directions, which creates a recurring saturate-then-dry pattern at the slab perimeter.
Concrete piers driven 12–16 feet are the engineered solution.
Sebastian's topography sheds runoff in all directions, repeatedly wetting and drying slab perimeters.
Slabs at the field margins absorb irrigation runoff asymmetrically — uneven moisture, uneven settlement.
Shallow pours with minimal steel — corner cracks by year 30 are the norm.
Older raised homes have decades of sill and block decay from ground moisture.
Yes — we work Willacy County weekly out of our Mercedes yard.
All of 78594 — downtown, Hwy 77, FM 506 corridor, and the rural acreage.
Yes. Elevation gear, walk-through, written report — no charge.
Yes. Sill replacement, beam sistering, and concrete pad resets.