It's the soil, not the roots, that moves your slab
DFW sits on expansive clay that swells when wet and shrinks when dry — the “shrink-swell” cycle behind most foundation movement in North Texas. Tree roots almost never physically push through and crack a sound slab. What trees can do is contribute to drought-side soil shrinkage: a large tree close to a foundation pulls moisture from the clay during summer, the clay under that edge shrinks and settles, and the slab can drop on that side. The damage is caused by differential soil moisture, with the tree as one factor — not roots prying concrete apart.
When a tree genuinely raises foundation risk
A few factors raise the real risk: a large, thirsty species (live oak, red oak, elm) planted very close to the slab; a foundation already prone to movement on poorly-watered clay; and long droughts with no foundation watering. As a rough guideline, large shade trees are best kept at least 15–20 feet from a foundation, and very large species farther. But proximity alone is not a death sentence for the tree — thousands of DFW homes have mature trees near the house with no foundation problems because the soil moisture is managed.
Surface roots and hardscape — a different issue
Roots that lift sidewalks, driveways, and patios are a separate, real phenomenon — surface roots thicken over years and heave thin, unreinforced concrete. This is a tripping and hardscape problem, not a house-foundation problem, and it has gentler solutions than removal: root-pruning on the hardscape side (done correctly, by an arborist, to avoid destabilizing the tree), installing root barriers, or replacing the slab with a flexible or suspended surface. Cutting major roots carelessly to save a sidewalk can make a tree hazardous — it is worth an arborist's eye first.
What to do instead of removing the tree
Before you remove a valuable shade tree over foundation fear, the highest-impact step is usually foundation watering: a soaker hose run around the perimeter during summer drought keeps the clay's moisture stable and prevents the shrinkage that actually moves slabs — with or without a tree. Root barriers installed between the tree and the foundation, selective root management by an arborist, and a structural engineer's assessment of the actual foundation are all steps that come before removal. Removing a mature tree can even backfire: the soil that the tree kept drier can rebound and heave.
Get the right professionals involved
Foundation movement is a question for two professionals working together: a structural/foundation engineer to evaluate the slab and the cause of movement, and an ISA Certified Arborist to assess the tree's role, root system, and whether root management or watering can resolve it without removal. Plenty of “the tree has to go” recommendations come from people who profit from removal, not from a neutral diagnosis. We give honest assessments — sometimes the tree stays and a soaker hose solves the problem; sometimes removal genuinely is the right call.