The price per helical pier varies because soil conditions and installation depth directly dictate the amount of material, labor, and equipment required for a stable foundation.

In the Centennial and Denver metro areas, these two factors are the primary cost drivers for the following reasons:

• Soil Composition: Different soil types, such as the expansive clay common in Centennial, require unique pier sizes and configurations. Clay soils expand and contract with moisture, which typically increases installation depth and total costs by 15–30% compared to sandy or loamy soils.
• Depth to Load-Bearing Strata: Helical piers must be driven deep enough to reach stable, load-bearing ground. Installation depths can range significantly from 5 feet to 30 feet.
• Material and Labor Requirements: Deeper installations require more steel shaft sections, additional labor time, and often heavier equipment. Because the price is influenced by the total amount of material used to reach the necessary depth, a pier driven to 30 feet will naturally cost more than one driven to 10 feet.

Ultimately, since every property has its own unique soil profile and structural load requirements, a professional site evaluation is necessary to determine the exact depth and pier specifications needed for a project.