According to our records, this business is located at 1209 Grant Ave. in Louisville (in Boulder County), Colorado 80027, the location GPS coordinates are: 39.9820047 (latitude), -105.1358647 (longitude). EC 3 Construction is categorized under Home Builders (SIC code 1521). Known organization owner is Edward Connelly. Current estimates show that the unit has a sales volume of $350,000 and staff of approximately 3 people. You can contact the company by phone at (303) 673-9565.