Getting your Trinity Audio player ready... School-related fees paid by developers on new residential and commercial construction in the 40-square-mile Placentia-Yorba Linda Unified School District will increase soon after the start of the new fiscal year that begins July 1. Fees on new residential development will jump 54.6% from $3.48 per-square-foot to $5.38 per-square-foot. Fees on new commercial-industrial development will jump 55.4% from 56 cents per-square-foot to 87 cents per-square-foot.