How do I process an ADU (Accessory Dwelling Units)?

Listed below you will find information regarding the Accessory Dwelling Units (ADU):

Accessory Dwelling Units (ADU) Information Sheet (PDF)
Desarrollo de una Unidad de Vivienda Accesoria - Español (PDF)

For additional information, please contact the Planning Department at (909) 350-6718 or via email

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1. What is CEQA?
2. What projects are subject to CEQA?
3. Who is exempt from CEQA?
4. What is an EIR, and when is it required?
5. What is a Negative Declaration and when is it required?
6. What is an Initial Study (IS)?
7. What constitutes "significance"?
8. How do I process an ADU (Accessory Dwelling Units)?