Yes, there are several additional costs associated with helical pier installation that may not be included in the base price per pier. While a standard quote from ACN Construction typically covers materials, professional installation, and basic load testing, other site-specific requirements are often billed separately.

Key additional costs include:

• Soil Analysis and Geotechnical Reports: A formal investigation is required to determine soil bearing capacity and the necessary pier depth. This is a critical upfront cost as poor soil can demand longer or larger-diameter piers.
• Engineering and Permits: Costs for stamped engineering reports and municipal building permits (such as those required by the City of Centennial) are generally separate line items.
• Site Accessibility Adjustments: If a site has limited access—such as tight crawl spaces, narrow yards, or steep landscaping—labor costs may increase by 10–20% due to the need for manual handling or specialized compact equipment.
• Depth Variations: While a base price is provided, every additional foot of depth needed to reach stable soil typically adds $30–$50 per pier in material and labor costs.
• Specialized Hardware: Items like specialized underpinning brackets or larger helix plates for difficult soil conditions may incur extra charges.
• Mobilization Fees: This covers the cost of delivering equipment and moving the crew to your specific property.