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California Building Standards Code

Summarized below is information about the 2013 Building Code and Water Conservation Requirements.

2013 Building Code
If you are an architect, engineer, designer or contractor that performs work within the State of California, please be advised that new California Title 24 codes will take effect on January 1, 2014. These codes include: the 2013 California Building Code and the 2013 California Residential Code, based on the 2012 International Building Code (IBC) and the 2012 International Residential Code, respectively; the 2013 California Mechanical and Plumbing codes, based on the 2012 Uniform Mechanical and the 2012 Uniform Plumbing Code, respectively; and, the 2013 California Electrical code based on the 2011 National Electrical Code. In addition, the California Energy Code and the California Green Building Standards Code have been updated, and are now the 2013 California Energy Code and the 2013 California Green Building Standards Code.

Effective Date Change For Parts of the 2013 California Building Standards Code (Date: December 18, 2013) Building Standards Information Bulletin 13-07

The purpose of this information bulletin is to announce the change of the effective date of specific provisions of the 2013 edition of the California Building Standards Code, Title 24, California Code of Regulations. At the December 18, 2013, meeting of the California Building Standards Commission (CBSC), the CBSC approved the action taken by the California Energy Commission (CEC) at its public hearing on December 11, 2013, changing the effective date of the 2013 California Energy Code, in Part 6, and the 2013 California Administrative Code, Chapter 10, in Part 1, Title 24, California Code of Regulations, from January 1, 2014, to July 1, 2014. The CBSC also addressed the necessary change in the effective date of affected energy provisions only in the 2013 California Green Building Standards Code (CALGreen), Part 11, Title 24, California Code of Regulations. Background Unanticipated delays have occurred in developing the 2013 Public Domain Residential and Nonresidential California Building Energy Code Compliance (CBECC) software for demonstrating performance compliance with the 2013 California Energy Code. Without the new software, requiring compliance with the 2013 California Energy Code will create a hardship for the building design professionals, the construction industries and enforcement agencies. Related Action At its December 18, 2013, meeting the CBSC approved the change of the January 1, 2014, effective date for affected energy provisions only in the 2013 CALGreen, Part 11, Title 24, California Code of Regulations to July 1, 2014. This action was necessary because of the relationship of these provisions to Part 1, Chapter 10, and Part 6, California Administrative Code and California Energy Code respectively. Summary of Change and Affect

California Energy Code, Part 6 – Effective July 1, 2014
The 2013 California Energy Code, Part 6, Title 24, California Code of Regulations now goes into effect on July 1, 2014. Until July 1, 2014, the 2010 California Energy Code, Part 6 is the effective code. The 2010 California Energy Code will remain in effect until July 1, 2014. California Administrative Code, Part 1, Chapter 10 – Effective July 1, 2014. 

California Administrative Code, Chapter 10, Part 1, Title 24
California Code of Regulations now goes into effect on July 1, 2014. Until July 1, 2014, the 2010 California Administrative Code, Chapter 10, Part 1, continues to be the effective code. The 2010 California Administrative Code, Chapter 10, Part 1, will remain in effect until July 1, 2014. Questions relevant to the change of the effective date of the 2013 energy provisions contained in Part 1, Chapter 10, and Part 6, California Administrative Code and California Energy Code respectively, should be directed to the Energy Standards Hotline at (800) 772-3300 or via e-mail at Title24@energy.ca.gov.

CALGreen, Part 11
Affected energy provisions only of the 2013 CALGreen, Part 11, Title 24, California Code of Regulations now go into effect on July 1, 2014. The affected energy provisions that will not be effective until July 1, 2014 are identified in the attached summary of Sections Effective July 1, 2014. The effective date for the remainder of the 2013 CALGreen code not listed in the attached summary is January 1, 2014.

Questions relevant to CALGreen and the change of the effective date for residential green building standards should be directed to Emily Withers, District Representative, Department of Housing and Community Development at (916) 445-9471 or via e-mail at ewithers@hcd.ca.gov.  

Questions regarding non-residential green building standards should be directed to the CBSC at (916) 263-0916 or via e-mail at cbsc@dgs.ca.gov . Please take note that all other Parts and provisions of the 2013 California Building Standards Code will become effective on January 1, 2014.

Water Conservation (California Civil Code 1101.4):

1101.4. (a) On and after January 1, 2014, for all building alterations or improvements to single-family residential real property, as a condition for issuance of a certificate of final completion and occupancy or final permit approval by the local building department, the permit applicant shall replace all non-compliant plumbing fixtures with water-conserving plumbing fixtures.

Civil Code Section 1101.3 defines “noncompliant plumbing fixture” to mean any of the following:

  • Any toilet manufactured to use more than 1.6 gallons of water per flush.
  • Any urinal manufactured to use more than one gallon of water per flush.
  • Any showerhead manufactured to have a flow capacity of more than 2.5 gallons of water per minute.\
  • Any interior faucet that emits more than 2.2 gallons of water per minute.

Civil Code Section 1101.3 goes on to define “water-conserving plumbing fixture” to mean any fixture that is in compliance with current building standards applicable to a newly constructed real property of the same type.

The mandatory requirements of the “current building standards” are contained in the 2013 California Green Building Standards Code. (CALGreen) The specific standards for plumbing fixtures installed in newly constructed buildings or additions or alterations to existing residential buildings where the addition or alteration increases the building’s conditioned area, volume, or size are as follows:

  • Toilets/water closets may use no more than 1.28 gallons per flush.
  • Urinals may use no more than 0.5 gallons per flush.
  • The maximum flow rate for a showerhead is 2.0 gallons per minute at 80 psi.
  • Interior faucets may not exceed specified flow rates:           
    • Residential lavatory faucets must not exceed 1.5 gallons per minute at 60 psi. The minimum flow rate of residential lavatory faucets is 0.8 gallons per minute at 20 psi. 

    • Metering faucets must not deliver more than 0.25 gallons per cycle.

    • Kitchen faucets must not exceed 1.8 gallons per minute at 60 psi, except for temporary increases not to exceed 2.2 gallons per minute at 60 psi.

As per the above Civil and California CALGreen code requirements, the Building Department of the City of Mill Valley is required to verify that all non-compliant fixtures have been replaced or that the existing fixtures do not constitute “noncompliant plumbing fixtures.” To obtain a certificate of final completion and occupancy or final approval for a permit it must be demonstrated that the plumbing fixtures comply with the applicable water use efficiency standards by any of the following methods:

  • Proof of purchase (sales receipt, etc.) that references the fixture model number and technical data supplied by the manufacturer that confirms the fixture’s flow capacity.
  • Provide the model number of the fixture accompanied by technical data supplied by the manufacturer that confirms the fixture’s flow capacity. This method of verification is generally applicable to existing fixtures that may meet the above requirements for water-conserving plumbing fixtures. Field verification by Building Department staff is required for this method.
  • Product packaging, owners’ manual or similar documentation from the manufacturer that confirms the fixture’s flow capacity.

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Last updated: 12/7/2015 1:26:50 PM