In the News

March 13, 2019 CORNERSTONE DEVELOPMENT OF S.E. WISCONSIN RECOGNIZED AMONG THE TOP CUSTOMER SERVICE LEADERS IN THE RESIDENTIAL CONSTRUCTION INDUSTRY GuildQuality’s 2019 Guildmaster Award Honors Cornerstone Development Sussex, WI -- Cornerstone Development of SE Wisconsin LLC received a 2019 Guildmaster Award from GuildQuality for demonstrating exceptional customer service within...

Cornerstone Development Wins Guildmaster Award   Milwaukee area-based Cornerstone Development won the 2017 Guildmaster Award. Cornerstone Development is an Epcon Communities franchise builder. Cornerstone’s owner John Wahlen is currently developing another local Epcon Community, The Glen of Oconomowoc. Cornerstone Development's community The Glen at Seven Stones received the 2015 Metropolitan Builders Association’s Achievement...