MESA, ARIZ. — Sigma Contracting has broken ground on a headquarters and warehouse facility for Potato Barn, a high-end furniture retailer. Situated on 8.4 acres at 7104 E. Ray Road in Mesa, the 100,000-square-foot property will feature 50,000 square feet of retail space, 30,000 square feet of warehouse space and a 20,000-square-foot outlet store. The $7.4 million facility is slated to open in January 2019. Perez McGree is providing architectural services for the project. The family-owned store plans to consolidate its operations into the new facility and close its locations at 4900 E. Power Road and 586 E. Germann Road in Gilbert, Ariz.