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Appendix A4

Section A4.304

California Green Building Standards Code (Title 24, Part 11) · 2019 edition · updated 2026-09-12 · California

OUTDOOR WATER USE

A4.304.1 Rainwater catchment systems. An approved rainwater catchment system is designed and installed to use rainwater generated by at least 65 percent of the available roof area. Rainwater catchment systems shall be designed and installed in accordance with the California Plumbing Code.

Copyright © 2019 ICC. ALL RIGHTS RESERVED. Accessed by Kevin Day (kevin.day@dgs.ca.gov), (California Building Standards Commission) Order Number #100735044 on Jul 24, 2019 03:54 PM (PDT) pursuant to License Agreement with ICC. No further reproduction or distribution authorized. Single user only, copying and networking prohibited. ANY UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT, AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.

100735044

106 2019 CALIFORNIA GREEN BUILDING STANDARDS CODE Copyright © 2019 ICC. ALL RIGHTS RESERVED. Accessed by Kevin Day (kevin.day@dgs.ca.gov), (California Building Standards Commission) Order Number #100735044 on Jul 24, 2019 03:54 PM (PDT) pursuant to License Agreement with ICC. No further reproduction or distribution authorized. Single user only, copying and networking prohibited. ANY UNAUTHORIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT, AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.

100735044

APPENDIX A4

RESIDENTIAL VOLUNTARY MEASURES

Division A4.4 – MATERIAL CONSERVATION AND RESOURCE EFFICIENCY

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▸Contents — California Green Building Standards Code (Title 24, Part 11)
California Green Building Standards Code (Title 24, Part 11)
  1. Chapter 1 — ADMINISTRATION
  2. Chapter 2 — DEFINITIONS
  3. Chapter 3 — GREEN BUILDING
  4. Chapter 4 — RESIDENTIAL MANDATORY MEASURES
  5. Chapter 5 — NONRESIDENTIAL MANDATORY MEASURES
  6. Chapter 6 — REFERENCED ORGANIZATIONS AND STANDARDS
  7. Chapter 7 — INSTALLER AND SPECIAL INSPECTOR QUALIFICATIONS
  8. Chapter 8 — COMPLIANCE FORMS, WORKSHEETS AND REFERENCE MATERIAL
  9. ▸Appendix A4
    Overview
    1. Section A4.101
    2. Section A4.102
    3. Section A4.103
    4. Section A4.104
    5. Section A4.105
    6. Section A4.106
    7. Section A4.107
    8. Section A4.108
    9. Section A4.201
    10. Section A4.202
    11. Section A4.203
    12. Section A4.305
    13. Section A4.306
    14. Section A4.301
    15. Section A4.302
    16. Section A4.303
    17. Section A4.304
    18. Section A4.401
    19. Section A4.402
    20. Section A4.403
    21. Section A4.404
    22. Section A4.405
    23. Section A4.406
    24. Section A4.407
    25. Section A4.408
    26. Section A4.409
    27. Section A4.410
    28. Section A4.411
    29. Section A4.501
    30. Section A4.502
    31. Section A4.503
    32. Section A4.504
    33. Section A4.505
    34. Section A4.506
    35. Section A4.507
    36. Section A4.508
    37. Section A4.509
    38. Section A4.601
    39. Section A4.602
    40. Section A4.602
    41. Section A4.602
    42. Section A4.602
    43. Section A4.602
    44. Section A4.602
    45. Section A4.602
    46. Section A4.602
    47. Section A4.602
    48. Section A4.602
  10. Appendix A5

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