High impact fees After the passage of Proposition 13 in 1978, many California cities and counties turned to imposing high impact fees upon development projects (i.e., exactions required as a condition of project approval ) as a means of closing budget gaps sparked by the resultant decline in property tax revenues. At that time, if the fee was paid so that the project could … [Read more...] about Oops! Developer who missed Mitigation Fee Act deadline loses claim