CARLSBAD, CALIF. — Construction is underway for the $86 million renovation of Carlsbad High School, which is located at 3557 Lancer Way in Carlsbad. The project includes construction of a new stadium and 11 new permanent education structures. The first phase, which includes the stadium, involves the demolition of the existing stadium and the development of a $13.6 million, 3,900-seat athletic stadium with aluminum bleachers, a synthetic track and field area, and a 10,000-square-foot building housing locker rooms, restrooms and concessions. Completion of the first phase is slated for spring 2010. The second phase includes the construction of one- and two-story education buildings comprising 90,000 square feet of classroom, performing arts, vocational education lab and food service space. Completion of the entire project is scheduled for fall 2011. McCarthy Building Companies Inc. is serving as general contractor; Perkins+Will is providing architectural services for the project.