FAQs • Placer County, CA • CivicEngage

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Is there any financial assistance in building/permitting my ADU?: Yes! Currently, CalHFA is offering a $40,000 grant to help with building an ADU. Check out our Financing and Grant Assistance page to see these opportunities.

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Community Development Resource Agency - ADU - Cost

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1. What are the impact fees for ADUs?

Impact fees are waived or reduced when building an ADU.

All impact fees are waived on ADUs less than 500 sf.
All impact fees are waived, except school fees on ADUs less than 750 sf.
For ADUs larger than 750 sf impact fees are proportional to the size of the primary dwelling. Ex: a 1,200 sf ADU with a primary dwelling of 2,400 sf will pay 50% of the impact fees.

2. How much money can I save by using Placer County’s preapproved plans?: Using Placer County’s pre-approved plans will save an estimated $6000-$10,000 in design fees. In addition, the review period will be reduced because the plans are preapproved.

3. Is there any financial assistance in building/permitting my ADU?: Yes! Currently, CalHFA is offering a $40,000 grant to help with building an ADU. Check out our Financing and Grant Assistance page to see these opportunities.