In the Denver metro area, including Centennial and Littleton, soil testing services are primarily provided by licensed geotechnical engineers. These professionals perform subsurface investigations by drilling exploratory borings and analyzing soil samples in accredited laboratories.

While property owners can hire these specialists independently, ACN Construction provides a streamlined approach for homeowners by:

• Coordinating with Engineering Firms: They recommend and work directly with trusted local geotechnical engineering firms as part of their design-build process.
• Managing Data Integration: They ensure that the soil data collected is seamlessly integrated into the structural foundation design.
• Handling Vendors: They manage the specialized geotechnical specialists so that the homeowner does not have to coordinate multiple extra vendors themselves.

Local building departments in the Denver metro area generally require these formal reports from licensed engineers for any structural foundation permit; simpler "perc tests" provided by health departments are not accepted for this purpose.