Foundation Piering for Baton Rouge Homes

What a foundation pier actually does

Clay soils common in parts of Louisiana can swell when they take on water and shrink when they dry out, and the house rides those changes. A pier is a column placed under the foundation that transfers the load of the house down to deeper, more stable soil, so the house stops following the surface.

Piers do two jobs. First, they stabilize — they stop further settlement at the points they support. Second, once they are in place, the specialist can use them to lift the foundation back toward level. Those are different promises, and a good quote keeps them separate: how the house will be held, and how far it will be raised.

Piering is a structural repair. It does not fix the reason the soil moved. If water is still pooling against the slab or under a raised house, the soil around the piers keeps cycling, and nearby unsupported sections can keep moving. That is why drainage and moisture correction belongs on the same quote as a separate line.

Common pier types

Specialists use several pier systems. Names vary from company to company, so ask what the pier is made of, how it is installed, and how the installer knows it reached competent soil.

Pressed or driven concrete piers

Stacked concrete cylinders are pressed into the ground one section at a time under the foundation, using the weight of the house as resistance, until they stop advancing. They are a common choice for residential slab repair. Ask how deep the installer expects them to go and what happens if they stop short.

Steel push piers

Steel pipe sections are hydraulically pushed down beside or under the footing, again using the structure’s weight, and attached to the foundation with a bracket. Steel piers can typically be driven deeper than pressed concrete.

Helical piers

A steel shaft with screw-like plates is turned into the ground, and the torque needed to turn it is used to estimate how much load it can carry. Helical piers do not depend on the weight of the house to install, so they are sometimes used for lighter structures or new additions.

Depth and capacity depend on the soil at your address, which is why this page does not quote typical depths. The specialist’s plan should state what installation criterion counts as “done” for each pier — a target depth, a resistance reading, or a torque value.

Exterior piers vs. interior piers

Exterior piers go in around the perimeter, dug from outside the house. Interior piers support sections in the middle of a slab and usually mean breaking through the floor from inside — moving furniture, cutting flooring, and patching afterward. That access work is why interior piers cost more each.

Per-pier figures published in 2021 — may be stale.

These per-pier figures were published in 2021 and may be stale. Use them to sanity-check how a quote splits exterior and interior work, not as a price to hold anyone to. For whole-job ranges, published piering jobs run $4,000 to $15,000; the cost page has the full table.

What a pier plan on a quote should state

A pier quote that says “install piers as needed” is not a plan. Before you sign, the written scope should tell you:

• Count. The exact number of piers, split into exterior and interior.
• Locations. A sketch or numbered list showing where each pier goes, tied to the elevation readings taken during the evaluation.
• Pier type and material. Pressed concrete, steel push, helical, or a combination — and why that type fits your house.
• Installation criteria. What depth, resistance, or torque each pier must reach, and what happens (and what it costs) if a pier needs to go deeper than planned.
• Lift target. How much the foundation will be raised, and the elevation the specialist is aiming for — not just “level.”
• Restoration. Who backfills, who patches interior floors, and what is excluded.

Then the pier work itself should sit on its own line, next to — not buried inside — the rest of the job. Every foundation quote should itemize these four lines separately:

1. 1Evaluation findingsWhat was measured and found — elevation readings, crack locations, construction type, likely cause.
2. 2Drainage / moisture correctionGutters, grading, downspouts, or crawlspace moisture work that addresses why the soil is moving.
3. 3Structural repairPiers, shims, or sill and beam replacement — with counts, locations, and depths stated.
4. 4Finish / cosmeticDrywall, brick, trim, and door adjustments after the house moves — priced on its own line.

When the lines are separate, you can compare two bids honestly. One specialist may include drainage and finish work; another may leave them out and look cheaper.

Piering vs. leveling on pier-and-beam houses

On a slab house, piering and leveling are usually the same job. On a raised, pier-and-beam house, they often are not. The house already sits on piers above a crawlspace. Leveling it usually means resetting or replacing existing piers, adding shims between the piers and the beams, and replacing sills or beams that have rotted. New piers are added where support is missing, but the work is mostly from underneath the house.

That difference is why the evaluation has to identify construction type first. If a quote for a raised house reads like a slab-piering proposal, ask why.

Questions to ask before you approve a pier plan

• What did the elevation survey show, and can I have a copy?
• Why this many piers, and why in these locations?
• What pier type are you using, and how do you know each one reached stable soil?
• What happens if a pier has to go deeper than planned — and does that change the price?
• What is causing the movement, and what does this quote do about it?
• Who handles permits, if any are required where I live?

If you are not sure whether your house needs piering at all, start with the foundation repair overview, or call and describe what you are seeing.