Detached ADU Title 24 Reports and T24 Energy Compliance Certificates (CF1R)

Detached ADU:

• “ADU Addition”: The conversion of existing unconditioned detached structures into ADUs, including transformations like converting garages, workshops, or pool houses into ADUs.
• “Newly Constructed ADU”: Involves the creation of an entirely new building with no shared common wall or adjacent ceiling/floor with the existing dwelling.

Key Points for Detached ADUs:

• No solar PV requirements for ADU additions.
• Existing walls and extensions of existing walls are exempt from rigid insulation requirements if the proposed insulation is R-15 or greater.
• All ADUs, regardless of size, must meet IAQ (Indoor Air Quality) ventilation requirements, with no exceptions.

Examples of Detached ADU Scenarios:

• “ADU Addition” Examples:
  • Transforming an existing detached, unconditioned pool house into an ADU.
  • Converting an existing detached, unconditioned workshop or garage into an ADU.
• “New” ADU Examples:
  • Demolishing an existing detached, unconditioned workshop or garage to construct a brand new ADU building.
  • Building a completely new structure for the ADU.

Explore Additional ADU Scenarios:

• Attached ADU
• Newly Constructed ADU

These scenarios define the specific Title 24 compliance requirements for your detached ADU project, ensuring that it adheres to energy efficiency standards while providing flexibility for various project types.