FAQ

What is title 24?

Title 24 Recently Asked Questions

Welcome to our comprehensive FAQ guide on Title 24 calculations. As California's building energy efficiency standards continue evolving, understanding Title 24 calculations is crucial for residential and commercial building owners. Our guide aims to answer all your burning questions, from the basics of what Title 24 is, to the software tools you can use for compliance. Check out most questions we have been received
example of a Title 24 Certificate of Compliance - pass result

A single-family building is a type of dwelling unit with occupancy group R-3 as defined in the CBC. It is a standalone unit that is not attached to any other dwelling unit, but it may have an attached garage.

A multifamily building is a type of dwelling unit with occupancy group R as defined in the CBC. It is a unit that shares a common wall and/or floor/ceiling with at least one other dwelling unit.

Additions are changes made to an existing building that increase both its conditioned floor area and volume.

Alterations are changes made to the envelope of a building, such as its insulation, windows, space conditioning system, water-heating system, or lighting system, without adding any conditioned space.

ASHRAE stands for the American Society of Heating, Refrigerating, and Air Conditioning Engineers. It is an organization that focuses on the advancement of indoor environmental comfort and energy efficiency in buildings.

Conditioned floor area is the total floor area (in square feet) of enclosed conditioned space on all floors of a building.

Compliance documentation includes all the forms, reports, and other information that must be submitted to the enforcement agency with an application for a building permit.

Examples of compliance documentation forms include CF1R-PRF-E, Certificate of Compliance; CF1R-NCB-01-E, CF1R-ADD-01-E, CF1R-ALT-01-E, CF1R-ALT-02-E, CF1R-ENV-02-E, CF1R-ENV-03-E, Worksheet for solar heat gain coefficient (SHGC), CF1R-ENV-04-E, CF1R-PLB-01-E, CF1R-STH-01-E, CF2R-E, CF2R-H, HERS Certificate of Installation Field Verification and/or Diagnostic, CF3R-H, Certificate of Verification (HERS Rater) Testing Field Verification Performance and/or Diagnostic, and CF3R-EXC-20-H, Certificate of Verification for Existing Testing Conditions (HERS Rater).

HERS providers are third-party organizations approved by the Energy Commission to provide verification and diagnostic testing on installed walls, mechanical systems, water heaters, and other building components. A list of approved HERS providers can be found at http://www.energy.ca.gov/HERS/.

CF1R-NCB-01-E is a form required for demonstrating compliance with the California Energy Code for nonresidential new construction and additions.

CF1R-ADD-01-E is a form required for demonstrating compliance with the California Energy Code for residential additions.

CF1R-ALT-01-E is a form required for demonstrating compliance with the California Energy Code for residential alterations that affect the building envelope.

Title 24 is a set of building standards in California aiming to reduce energy consumption and promote environmental sustainability. These standards touch on various aspects of building design and construction, from insulation and lighting to HVAC systems.

CF1R-ALT-02-E is a form required for demonstrating compliance with the California Energy Code for residential alterations that affect mechanical systems.

CF1R-ENV-02-E is a form required for demonstrating compliance with the California Energy Code for residential new construction and additions for the building envelope.

CF1R-ENV-03-E is a worksheet used to determine the solar heat gain coefficient (SHGC) for demonstrating compliance with the California Energy Code for residential new construction and additions.

CF1R-ENV-04-E is a form required for demonstrating compliance with the California Energy Code for residential new construction and additions for mechanical systems.

CF1R-PLB-01-E is a form required for demonstrating compliance with the California Energy Code for nonresidential plumbing calculations.

CF1R-STH-01-E is a form required for demonstrating compliance with the California Energy Code for solar thermal calculations.

CF2R-E and CF2R-H are forms required for building inspections to demonstrate compliance with the California Energy Code, with CF2R-E for residential and CF2R-H for nonresidential.

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