Largo Concrete, Inc. is a full service structural concrete contractor. We have been a privately held business for over 25 yea ... rs with over 1,450 employees. Past President and Post-Tensioning Hall of Fame inductee, Hal Long, has long been recognized as a pioneer of post-tensioning and brings over 50 years of experience in construction. Mark Carnathan Vice President and owner and Ken Long- President and owner, head the Northern and Southern California divisions, respectively. Co-founder Mark Carnathan has 28 years of concrete construction experience and Ken Long has been with the firm for 20 years. Largo Concrete has completed over 600 structural concrete projects, including parking structures, high-rise residential/mixed use structures, hotels, podiums, commercial buildings, hospitals and schools all throughout Northern and Southern California. Largo averages over $200 million a year in volume and strives to grow every day. From a vague idea jotted down on a napkin to the full realization of an Owner’s or Architect’s dream, Largo is there every step of the way with full design capability, new and innovative ideas, and a committed and experienced team to provide you with the highest quality and standard, built safely, cost-effectively and expeditiously. Excellence with minimal hassle is what every client should expect from Largo. Full commitment and unparalleled service is what you will receive. Please take the time to review our portfolio and see what previous clients have to say about us. If you are not convinced, allow us the opportunity, and we will convince you. read more