With 26 percent of town voters taking part in the annual election on May 11, a ballot question proposing to extend the Community Preservation Act’s 1 percent property tax surcharge to include commercial and industrial properties, with the first $100,000 of value exempted. passed by a vote of 949 to 385, with 318 blanks. According to Town Administrator Keith Bergman, assessors have estimated that the program’s expansion would generate another $64,729 per year for local affordable housing, recreation, open space, and historical preservation efforts. It was the only question on the ballot, in addition to a slate of town offices. The change will take effect in fiscal year 2014, which begins July 1.