California's commercial construction activity has risen to its highest level since 2001 and is expected to continue to grow over the next three years, according to the most recent conducted by law firm Allen Matkins and UCLA Anderson School of Management. The study , which examined seven of the state's major markets for indicators of future commercial construction, notes that the industry boom has been sparked by available financing, low cap rates and an increasingly high demand from technology, advertising, media and information companies, as well as a shortage of multi-family housing.