A report issued by the Legislative Analyst's Office shows that California's high housing costs are stifling the state's economy and making it difficult to create affordable housing. The report says that the state "probably would have to build as many as 100,000 additional units annually...to seriously mitigate its problems with housing affordability." But housing construction has fallen behind population and job growth, with builders only getting authorization to start 37,000 single-family homes and 49,000 multifamily units statewide last year.