Foundation piers in Houston

A pier foundation carries the weight of a house down through soft or shifting soil to firmer ground, using columns of concrete or steel. In Houston, piers are the standard fix when a slab or a pier-and-beam house has started to sink: a local foundation contractor drives or screws piers under the failing section, then lifts the house back toward level. Pressed concrete piers cost about $300 to $600 each here, and steel piers start around $1,000. This page explains the main pier types, how deep they go, how many a house needs, and what drives the price.

What is a pier foundation?

A Pier Foundation is a set of vertical columns that pass loads from a building down to deeper, more stable soil, instead of resting the whole weight on the top layer of ground. New houses can be built on piers from the start. In foundation repair, piers are added under an existing slab or beam to stop it sinking further, a job known as underpinning.

Engineers often separate piles, which are driven into the ground, from piers, which are drilled and filled with concrete, but naming varies. In Houston repair work, "pier" usually covers both. See what a pier foundation means for the terms.

You'll meet two settings here:

• Slab on grade. Most Houston homes built since the 1960s sit on a concrete slab. Repair piers go under the slab's edge beams and, where needed, under interior walls.
• Pier and beam. Older homes, such as the Craftsman bungalows of the Houston Heights, sit on short piers with wood beams above a crawl space. Those piers can be reset, shimmed or replaced. Houston houses rarely have a basement, so basement wall piers are not something you'll usually need.

Why do so many Houston houses need foundation piers?

Houston houses need piers because the ground under them keeps moving. Much of the area sits on heavy clays such as the Lake Charles series, which the USDA describes as 45 to 60% clay. In dry spells it cracks open half an inch to two inches wide and a foot or more deep, then swells again when rain returns. That repeated movement lifts and drops a slab unevenly.

Land subsidence adds to it. The USGS recorded more than 10 feet of sinking near Pasadena between 1906 and 1995, and the Harris-Galveston Subsidence District now measures the fastest rates, over 3 cm a year, around Katy and Fulshear. Piers that reach below the most active soil give the house something steadier to stand on.

What types of foundation piers are used in Houston?

Houston contractors mostly use three kinds of repair piers: pressed concrete piers, steel push piers and helical piers. Pressed concrete pilings are the most common and the cheapest per pier. Steel push piers go deeper and cost more. Helical piers are screwed in and suit lighter loads or spots where a push pier can't get enough resistance. Drilled concrete piers are used too, mostly in new construction.

Wooden piers frequently rot in wet clay. The choice between steel types is covered in helical vs push piers.

What is helical piering?

Helical piering means screwing steel piers, also called screw piles, into the ground instead of pushing or drilling them. Each pier is a steel shaft with one or more round plates welded on like the thread of a screw. A hydraulic motor turns it down, and the torque it takes to turn is monitored to check the pier is holding as designed. Once installed, a bracket ties it to the foundation.

Helical piers suit spots too light to push piers down against, such as a porch or a garage slab, and carry weight straight away. Plate number, size and spacing are chosen for the load and soil, so the size you need comes from a design, not a catalog. For repair under an existing house, see helical pier foundation repair.

How deep are piers for a house?

There's no single depth. A repair pier goes down until it reaches soil firm enough to hold the house, so the depth changes from one house, and sometimes one corner, to the next. Pressed and push piers are driven until they resist further pushing. Helical piers are turned until they reach the installation torque the design calls for.

In Houston the aim is to get below the clay layer that swells and shrinks most with the seasons. The USDA soil descriptions show drought cracks reaching a foot or more deep, so piers that stop near the surface just ride up and down with the clay. A contractor will usually record each pier's final depth or resistance on a pier log. Ask for that log when the job is done.

How many piers does a foundation need, and how far apart?

The number of piers depends on how much of the house is moving and how heavy it is. A single sunken corner might need a handful of piers. A side that has dropped along its full length can need twenty or more. Spacing is set by the weight of the wall and what each pier can carry, so it's decided on site, often with a structural engineer.

Interior piers mean opening the slab indoors, which the Houston Press guide says adds about 15%. A good quote lists exterior and interior piers, where each goes and the pier type, so you can compare quotes like for like.

How much do foundation piers cost in Houston?

Pier prices in Houston run about $300 to $600 each for pressed concrete piers and $1,000 or more for steel, according to a 2026 Houston Press guide. Nationally, This Old House puts piering at $1,000 to $3,000 per pier. Most Houston repair jobs total $3,300 to $6,800, with the pier count driving most of the difference.

Access matters too: decks, tight side yards and landscaping add 6 to 8% to pier costs, the Houston guide says. These figures are a guide; the contractor's written quote sets the real price. The full breakdown is on pier foundation cost, and wider repair prices are on foundation repair cost in Houston. Inside the City of Houston, foundation repair runs under a building permit; the city's weekly permit reports list them.

Can you buy foundation piers and install them yourself?

You can buy concrete pier blocks, adjustable steel support posts and even helical piers, and they suit sheds, decks and small outbuildings. Lifting a house is different. It takes hydraulic equipment, a plan for where every pier goes, and in Houston a building permit. Done wrong, a lift can crack the slab or the drain lines under it.

The limits of doing it yourself are on DIY foundation piers. For a house, we'll arrange a visit from a local foundation contractor, and you get the price in writing before anyone starts. Ask for a pier quote.