Drilled displacement piles are installed by the displacement of soil and subsequent placement of fluid cement grout within the evacuated volume. Depending on the soil grain-size characteristics, soil behavior, in situ soil density, pile spacing, and pile diameter, the installation process can result in measurable densification and an increase in lateral stress. Thus, it follows that the drilled displacement process may be used to mitigate cyclic liquefaction in sandy soils. In an effort to quantify the increase in cyclic liquefaction resistance resulting from drilled displacement piles, the authors performed pre- and post-installation cone penetration testing at a site in North Myrtle Beach, South Carolina