We build to improve lives. Knowing that the work we do directly affects people, we commit to delivering a high quality end pr ... oduct with a collaborative construction process. The planning, collaboration, communication, and execution for each of our projects is focused on the success of the entire team, an approach that has earned us a network of excellent partners and a 93% client referral rate. Whether constructing office space, a laboratory, or a mission critical facility, we offer a practical approach built on a foundation of technical construction experience tailored to meet each project’s specific needs. Founded in 1992 and with offices in the Bay Area and Sacramento, California, XL is a contractor of choice for leading companies in technology, life sciences, healthcare, and education. XL is consistently ranked as one of the Best Places to Work by the San Francisco Business Times/Silicon Valley Business Journal and is a founding member of the United States Green Building Council (USGBC) Silicon Valley Chapter. read more