How close can an ADU be to a property line or adjacent building?

Fire separation will need to comply with tables R302.1(1) and R302.1(2) of the California Residential Code.  ADUs equipped with automatic sprinklers require a 1-hour rated exterior wall if constructed within 3’ of a property line or 6’ from an adjacent sprinklered structure on the same lot.  ADUs not equipped with fire sprinklers require a 1-hour rated exterior wall if constructed within 5’ of a property line or 10’ of an adjacent building on the same lot. For ADUs that are attached to a primary dwelling, 1-hour rated wall and/or floor assemblies are required to separate the dwelling units. See CRC R302 for additional information. Fire separation requirements do not apply to JADUs that are built within the walls of an existing dwelling.

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1. Can a portion of an existing house, garage or other accessory structure be converted to an Accessory Home?
2. Can an Accessory Home be constructed above or attached to a garage?
3. How close can an ADU be to a property line or adjacent building?
4. Are automatic sprinklers required in my ADU?
5. Can I convert my existing garage to an ADU?
6. What kind of egress requirements apply to my ADU?
7. Can a single HVAC system be installed to serve both the primary dwelling and attached ADU?
8. Does my ADU require separate utility meters?
9. Does my ADU require solar?
10. Does my project need to comply with Wildland Urban Interface requirements?