Foundation Inspection Terrell Hills, TX.

The live oaks and pecans that give Terrell Hills its shade are also the single biggest reason a foundation here starts to move. A mature tree can pull moisture out of the surrounding clay at a distance of up to one and a half times its crown spread, and when that high-plasticity soil loses water it shrinks vertically. Do that unevenly across a slab, drying hard on the tree side, holding moisture elsewhere, and you get the stair-step cracks, the door that suddenly won't latch, and the floor that dips toward an exterior wall.

A real foundation inspection has to read both things at once: the tree loading and the soil underneath. On this side of the Balcones Escarpment the ground is Houston Black clay, a deeply reactive soil with a Plasticity Index that typically runs 40 to 60 and stays active down to roughly 10 to 15 feet. That's the number that matters. This page walks through exactly what our survey measures, what the written report tells you, and how to read the result before anyone talks about repair.

What the elevation survey actually measures

The inspection starts with a digital-level elevation survey across the entire slab, accurate to ±0.01 inch, about one sixty-fourth of an inch. The output is a topographic map of your foundation's current shape: where it's high, where it's low, and how much difference there is between the two. That map is the objective record that separates engineering from guesswork, and it's the same survey we provide free of charge before any scope is written.

Shape tells a story. A dish profile with its deepest point near a tree line reads very differently from perimeter settlement running along a poorly drained side of the house, and the two call for different responses. We combine the elevation data with a visual read of crack geometry, how the doors and windows are performing, gaps opening at interior trim, and any soil separation at the perimeter grade beam. Interior passage doors are especially useful here, their frames aren't swelling with humidity, so binding at a top corner often reflects slab movement measurable at the 0.01-inch scale before a single crack shows.

Tree proximity is logged as a primary variable, not a footnote. For every mature tree within 30 feet we note the species, the approximate canopy spread, and the distance to the foundation, because that's what tells us how to interpret the survey, whether the low corner is tree-driven drying or something else. If the pattern points to true settlement past the slab's ability to recover, the report says so plainly, and steel-pier foundation repair becomes the conversation. If it doesn't, we say that too.

How a Terrell Hills inspection runs

Terrell Hills foundation inspection questions