Foundation Repair with Helical Piers: Costs, How They Work, and When You Need Them

By Andrea · August 2026

Helical piers are one of the most reliable tools for stopping a settling foundation — but they're not cheap, and they're not right for every situation. This page covers how the method works, what drives the cost, and how to know whether your home actually needs them. For a full picture of foundation repair costs across all methods, see the Foundation Repair Cost Guide — and if your concern is specifically a crawl space, see Crawlspace Foundation Repair.

What Helical Piers Actually Do

A helical pier is a steel shaft with one or more helical plates welded along its length — think of a giant screw. A hydraulic drive head spins it into the ground, advancing it until it reaches stable, load-bearing soil or bedrock. Once set, a bracket attaches to your foundation wall or footing, transferring the structural load from the failing soil down to the pier.

The key difference from push piers (which are hydraulically pressed straight down) is that helical piers can be installed in low-headroom spaces — crawl spaces and tight basements included — and they work in both compression and tension, so they're also used to resist uplift from expansive clay. They don't need the weight of the house to install, which matters for lighter structures or additions.

What Drives the Cost

Helical pier projects are priced per pier installed. The total depends on pier count, required depth, and site conditions — use the Foundation Repair Cost Calculator to build a rough baseline before collecting bids.

• Number of piers: Each additional pier adds directly to the project total. A corner settling problem might need 3–4 piers; a full perimeter job on a larger home can require 15–25 or more.
• Depth to stable soil: In areas with deep clay layers or fill soil, piers may need to go 20–30+ feet before reaching competent bearing strata. More shaft sections mean more material and time.
• Access and headroom: Tight crawl spaces require smaller equipment and more hand labor. Difficult access — fencing, landscaping, slopes — can add to excavation and setup costs.
• Bracket type: Interior vs. exterior brackets have different installation requirements. Exterior installs typically require excavation down to the footing.
• Lifting or stabilizing only: Some contractors stabilize the foundation in place; others attempt to lift and recover some of the settlement. Lifting attempts add risk (utilities, finishes cracking) and sometimes cost.

All cost estimates vary by region, soil type, severity of movement, and contractor. Get at least three quotes from licensed local foundation contractors, and have a Structural Engineer Evaluate your foundation before committing to any repair method.

When Helical Piers Are the Right Call

Helical piers make sense when your foundation is settling due to weak, saturated, or unstable soil beneath the footing — not shrinkage cracks, not surface drainage erosion, and not a crawl space beam that just needs shimming. Key indicators: doors and windows sticking or racking, visible floor slope, diagonal cracks from corners of openings, or stair-step cracks in brick. Wide horizontal cracks in a basement wall point to lateral soil pressure — a different repair entirely. For crawl space-specific settlement patterns, see Crawlspace Foundation Repair.

They're particularly common on Settling Foundation Repairs driven by deep soil failure, on slab foundations in expansive clay regions, and on crawl space foundations where block piers have sunk. If your home sits on a pier-and-beam system, see Pier-And-Beam Foundation Repair; for crawl space-specific concerns, see Crawlspace Foundation Repair.