Based on the provided content from ACN Construction, there is no specific “average price range” or flat dollar amount listed for the total cost of installing a single helical pier. The documentation emphasizes that costs are calculated on a custom basis because they are driven by site-specific variables.
However, the guide does provide a specific cost estimate for additional drilling depth:
- The cost for drilling beyond a baseline installation depth adds an estimated $30–$50 per extra foot for each pier.
This incremental cost covers raw materials for extension shafts and additional hourly labor and equipment runtime. ACN Construction stresses that a professional site inspection is required to determine a definitive price because the final cost is influenced by:
- Installation Depth: Deeper installations require more steel and labor.
- Soil Conditions: Sandy or loamy soils are standard, while dense clay, silt, or rocky substrates increase torque requirements and labor time.
- Material Specifications: Larger shaft diameters, heavier steel gauges, and galvanized coatings for corrosion resistance increase the per-unit price.
- Site Accessibility: Limited access or tight work zones may require specialized compact machinery or manual labor, adding to mobilization and labor fees.
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