United Construction-engineer S Main St Litchfield, CT 06759 Phone : (860) 489-7273 Business Category Builders & Contractors Building Contractors Buildings Metal General Contractors-Residential Buildings General Contractors-Nonresidential Buildings (No Industrial Buildings or Warehouses) United Construction & Engrg 111 Thomaston Rd Harwinton, CT 06791 Phone : (860) 489-7273 Business Category Building Contractors Buildings Metal General Contractors-Nonresidential Buildings (No Industrial Buildings or Warehouses)