There are several fees associated with ADU’s, including:
Building permit fees- about 5 percent of the total valuation, time and materials to build.
School Impact Fees – about $3 to $ 4 a square foot. There are several school districts within the City limits, so you might owe fees for more than one district. Contact them directly for their fee structure.
City Development Impact Fees – Impact fees pay for the additional “impact” the unit will put on City services and infrastructure–everything from public safety to sewers to streets. Read the Fees booklet to estimate which fees will apply to you.