Slab Foundation Repair in Houston

What kind of slab do you have?

Houston-area engineers say slab-on-grade is the most commonly used foundation type: cast-in-place concrete stiffened with grade beams and supported by the surface soils. A slab-on-piers is similar, except the grade beams rest on drilled concrete piers. A structural slab on piers usually spans a few inches above the soil instead of resting on it (FPA-SC-07-0, 2003, checked 2026-10-13). The association's homebuyer guide adds that most new homes have post-tensioned slabs, "as this is the most economical method of foundation construction" (FPA-SC-06-0, 2005, checked 2026-10-13). If you have the builder's paperwork, it may say which type you have. Tell the contractor, since it affects how they'd approach a repair.

Signs your slab is moving

The Foundation Performance Association sorts damage from foundation movement into three groups (FPA-SC-12-0, 2006, checked 2026-10-13):

• Cosmetic (architectural): minor separations in walls, ceilings, paving and floors, including cracks in floor coverings that reflect cracks or curvature in the slab below.
• Functional: damage that affects how you use the house, such as doors or windows that stick, won't close or won't latch.
• Structural: damage to studs, columns, beams or the foundation itself, so that a member "may no longer support the intended design load." The same paper says that when repaired cracks reopen "in the same or adjacent locations," it typically means the house is still moving in the same direction, not just shifting with the seasons. Its move-in checklist treats cracks wider than 1/8 inch in a house more than 10 years old as worth noting (FPA-SC-07-0, 2003, checked 2026-10-13). For a simple check, the homebuyer guide suggests spot-checking floor slopes with a four-foot carpenter's level and a tape measure (FPA-SC-06-0, 2005, checked 2026-10-13). More on Signs of foundation problems.

Rule out a plumbing leak first

The Foundation Performance Association says some slab problems come from plumbing leaks, and that it's prudent to get a hydrostatic leak test if you suspect movement or your home was built before 1985. It calls these tests relatively inexpensive (FPA-SC-06-0, checked 2026-10-13). Leaking plumbing and drains can create local high moisture that leads to uneven movement and should be fixed as soon as possible (FPA-SC-07-0, checked 2026-10-13).

Common slab repair methods

The Foundation Performance Association lists these among the repair methods used on Houston-area homes (FPA-RC-01-0, checked 2026-10-13):

• Pressed concrete pilings: precast segments pushed in using the weight of the house.
• Steel push (pipe) piers: steel sections pressed in the same way.
• Helical piers: steel shafts with helix plates, screwed in to a set torque.
• Drilled piers: concrete poured in a drilled hole, straight or with a bell at the bottom.
• Foam injection: expanding urethane foam pumped under low areas to lift them. The same paper notes that the repair piers most often used on Houston homes aren't tied to the grade beams, so they can't stop the foundation from lifting when soil swells. For how each pier type works and the failure causes FPA lists, see our helical piers and pier comparison guide. Ask each contractor which method they propose, how deep it goes and why. See How to choose a foundation repair company.

Slab or pier and beam?

Three differences Houston engineers point out (FPA-SC-01-0, 2004, checked 2026-10-13):

There's also access: a crawl space is a space between the floor and the soil large enough for an adult to get into (FPA-SC-06-0, 2005, checked 2026-10-13), while a slab sits on the soil. For more, see Pier and beam foundation repair.

Cost

A Houston foundation contractor told KPRC that repairs "can be from 3,000 to 20 plus thousand, depending on the severity" (KPRC Click2Houston, Sept 18 2026, news report, checked 2026-10-13). Labeled ranges by source are on Foundation repair cost in Houston.

Licensing and permits

Texas does not have a statewide license for foundation repair contractors; cities may require permits. In the City of Houston, a Residential Repair Permit is required for repairs that involve replacing or repairing existing structural members, and permitted work must be inspected before it's finalized (Houston Permitting Center, Structural Inspections, checked 2026-10-13). Ask your contractor whether your repair needs one and who will pull it.

How SteadyHomeHouston helps

SteadyHomeHouston publishes free guides on Houston foundation repair and will be paid by contractors for referrals once quote requests open. Quote requests are coming soon. For now, call (832) 646-1494 or email [email protected].

Related: Home · Foundation inspection · Signs of foundation problems · House leveling · Foundation repair cost · Helical piers · Pier and beam foundation repair · How to choose a foundation repair company