Why this pier type for my house?
The answer should refer to the ground under your property and the elevation readings, not to what the company normally installs.
Pressed Concrete vs. Steel Piers
If piers have been recommended, these are the two options you will usually be offered in San Antonio. San Antonio Foundation Fix explains what each one does, where each suits the ground, and what to ask before you pick.
- Upfront Quotes
- Slab & Pier and Beam
- Residential & Commercial
The Short Answer
Pressed concrete piers are cylinders of concrete pushed into the ground one on top of another using the weight of the house. They are the common choice on the deep clay south and east of San Antonio, where there is a long way to go before anything firm is reached and the cost per foot matters.
Steel piers are sections of pipe driven down to refusal, usually onto rock or a dense layer. They cost more but they can be driven deeper and they reach load-bearing ground more predictably, which is why they come up on hillside lots and where the depth is uncertain.
Neither type is universally better. The right answer depends on what is under your house, and that is a question for the elevation survey and the soil, not for a preference.
| What to compare | Pressed concrete piers | Steel piers |
|---|---|---|
| How they work | Concrete cylinders pressed into the soil in a stack using the weight of the structure | Steel pipe sections driven until they meet firm resistance |
| Suits | Deep, consistent clay where firm ground is a long way down | Variable ground, shallow rock, or where depth cannot be predicted |
| Reaching load-bearing ground | Depth is limited by what the structure can press against | Can generally be driven deeper and to a measurable refusal |
| Relative cost | Usually the lower-cost option per pier | Usually the higher-cost option per pier |
| Disruption | Excavation at each location around the perimeter | Similar excavation, with driving equipment at each point |
| Typical use here | Common on east and south side slab homes | Common on the north side and on graded hillside pads |
When Pressed Concrete Piers Suit
On the deep expansive clay east and south of downtown, there is often no rock within reach at all. What a pier does there is transfer load below the zone that dries out and shrinks each summer, and pressed concrete does that at a sensible cost per point.
They are also a practical choice where a house needs a lot of piers around a long perimeter, which is common on wide ranch plans such as those in Leon Valley and the slab subdivisions of Schertz.
What to check: the quote should state pier spacing and the approach to depth, and what happens if a pier will not reach resistance. See how piers are installed and slab foundation repair.
When Steel Piers Suit
North of the Balcones fault line the ground changes. Limestone can be close to the surface, but on a graded hillside pad one side of the house may sit on rock and the other on fill. Steel piers can be driven to a measurable refusal in both, which makes them predictable where the depth is not. That is why they come up often in Stone Oak and the newer subdivisions.
They also suit heavier loads and situations where an engineer has specified a particular capacity, including commercial buildings covered under commercial foundation repair.
What to check: ask what refusal criteria are being used and what happens if a pier meets a rock shelf that turns out to be a boulder rather than bedrock. A good crew has an answer ready.
Questions for the Inspection
How many, how deep, and what if that changes?
Ask for the pier count, the depth approach and what happens to the price if a pier has to go deeper than expected.
What is covered, and for how long?
Coverage terms differ between contractors and pier types. Ask for them in writing, and ask whether they transfer if you sell the house.
What happens to the finishes?
Lifting a house moves tile, brick and drywall that have settled. Ask what cosmetic repair is included and what is a separate trade.
None of this replaces measurement. Start with a foundation inspection, and if the decision is a large one, an independent structural engineer you engage directly can review the recommendation without any interest in selling the work. Read repair now or wait if you are still deciding on timing.
Arrange a foundation inspection in San Antonio
Get the readings first. The pier conversation makes a lot more sense once you know what the floor is doing.