Helical Piers in Visalia, CA

A helical pier is a steel shaft with screw-like plates — helices — welded along it. It is screwed into the ground, like a giant screw, until the plates reach soil strong enough to carry the weight of the house. A bracket then connects the pier to the foundation, and the load is transferred from the moving surface soil to the stable layer below.

Helical piers are a good match for Visalia because they work in the valley's clay soils, they can be installed with small equipment in tight side yards, and they can be load-tested immediately — the crew knows on the day whether each pier is holding.

When helical piers are the right fix

Helical piers are used where a foundation has settled and needs both lifting and long-term support. They are the usual choice for lighter structures — single-storey homes, porches, additions, and garage walls — and for jobs where access is tight, because the equipment is smaller than the rig needed for driven push piers.

They are also the right choice when the soil is known to be soft or variable to a predictable depth: the crew screws the pier down until the torque readings show it has reached competent soil, so there is no guessing about depth. They are not the answer to every foundation problem — a house with a sound foundation but a water problem needs drainage and waterproofing, not piers.

• •Settling foundations on clay or fill soil
• •Additions and porches that have dropped away from the main house
• •Light structures where driven piers would be too disruptive
• •Jobs where the pier must be load-tested the same day

How helical piers are installed

A small excavation is made at each pier location, down to the footing. A hydraulic drive head screws the pier into the ground, section by section, until the torque readings show the helices are in stable soil. A steel bracket is bolted to the footing, the load is transferred onto the pier, and the foundation is lifted in small increments — the same controlled lifting used in any underpinning job.

Because the piers are screwed in rather than driven, there is less vibration than with push piers, which matters for older homes and for neighbours. The installation is also fast: a crew can usually install several piers in a day, and the house can be lifted and locked off without waiting for concrete to cure.

• •Small excavation at each pier, down to the footing
• •Pier screwed to stable soil, with torque readings recorded
• •Bracket bolted to the footing and load transferred
• •Controlled lifting, then lock-off and backfill

Helical piers vs push piers

Both do the same job — transfer a foundation's load to stable soil — but they get there differently. Helical piers are screwed in and can be installed in tight spaces with less vibration; push piers are driven in using the weight of the house as resistance, and are often used for heavier, two-storey structures. The right choice depends on the weight of the structure, the soil, and access. A contractor who only offers one type is selling what they have, not necessarily what your house needs.

What helical piers cost

Helical piers are priced per pier, and the total depends on how many are needed and how deep they must go. As a planning guide, underpinning and piering in general runs $5,000–$25,000, and foundation repair in Visalia averages about $6,323 per project (CaliforniaHomeCosts, 2026). A small job — a few piers under one corner — sits at the low end; a whole-house job sits at the high end. Only a level survey can set the number.

Part of: Foundation Repair — Helical Piers — see the main service page for the full overview.

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