ADU Title 24 compliance refers to the energy efficiency standards set forth by the California Building Standards Commission for Accessory Dwelling Units (ADUs) in the state of California. These standards, known as Title 24 report, aim to reduce energy consumption and promote sustainable building practices in new construction and remodels of ADUs.
In order to comply with ADU Title 24 standards, builders and homeowners must ensure that the ADU is designed and constructed in a way that minimizes energy consumption. This includes the use of energy-efficient appliances and lighting, proper insulation, and the use of renewable energy sources such as solar panels.

One of the key components of ADU Title 24 compliance is the use of energy-efficient appliances and lighting. This includes the use of Energy Star-rated appliances, such as refrigerators, ovens, and washing machines, as well as LED lighting fixtures. These appliances and fixtures use less energy and have a lower environmental impact compared to traditional appliances and lighting.
Proper insulation is also important for ADU Title 24 compliance. This includes the use of insulation in the walls, floors, and ceilings of the ADU to keep the interior temperature at a comfortable level and reduce the need for heating and cooling. This can be achieved through the use of high-efficiency insulation materials such as cellulose or spray foam.
In addition to energy-efficient appliances and insulation, ADU Title 24 also promotes the use of renewable energy sources. This includes the use of solar panels to generate electricity, which can be used to power the ADU and reduce reliance on fossil fuels. It is important to note that not all buildings are suitable for solar power and it is best to consult with a professional to determine if a particular ADU can benefit from solar power.
Another important aspect of ADU Title 24 compliance is proper ventilation. This includes ensuring that the ADU has adequate ventilation to provide fresh air and remove pollutants and moisture. This can be achieved through the use of mechanical ventilation systems or natural ventilation methods such as operable windows and skylights.

To ensure that an ADU meets ADU Title 24 standards, builders and homeowners must obtain a Title 24 energy compliance certificate from a certified energy analyst. This certificate verifies that the ADU has been designed and constructed in compliance with the energy efficiency standards set forth in Title 24.