Cornerstone is a 640-acre mixed-use environment in Grayslake, IL, that brings together offices, light industrial, R&D, luxury residences, shopping, and marquee restaurants in the heart of Lake County.


Cornerstone’s residential plan is carefully designed to protect home values within the community through a 9-year buildout timed to serve the 200,000 new residents projected to move to Lake County in the next 15 years. The combination of row homes, town houses, condos, single-family homes, apartments and senior rental units create a diversified, multidimensional mix that will remain strong through the undulations of the economy and accommodate the demographic patterns of the region into the long term.