Cal. Educ. Code § 17040.2

Where 75 percent or more of the total cost of a project approved under this chapter is to be funded by the applicant district from sources other than any state program administered by the board, the area of the allowable new building construction for that project, and the amount of the building cost allowed for that project under this chapter, shall each be increased by 5 percent, plus 1 percent for each 1 percent by which that local contribution exceeds 75 percent.