A4.602 RESIDENTIAL OCCUPANCIES APPLICATION CHECKLIST—continued — 2025 California Green Building Standards Code
California Green Building Standards Code (Title 24, Part 11) · 2025 edition · updated 2026-10-19 · California
Cite as: 2025 California Green Building Standards Code (Title 24, Part 11) § A4.602 · Effective January 1, 2026 · Official source: Building Standards Commission
| FEATURE OR MEASURE | LEVELS APPLICANT TO SELECT ELECTIVE MEASURES |
VERIFICATIONS ENFORCING AGENCY TO SPECIFY VERIFICATION METHOD |
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|---|---|---|---|---|---|---|
| FEATURE OR MEASURE | Mandatory | Prerequisites and electives1 | Prerequisites and electives1 | Enforcing Agency All |
Installer or Designer All |
Third party All |
| FEATURE OR MEASURE | Mandatory | Tier 1 | Tier 2 | Tier 2 | Tier 2 | Tier 2 |
| MATERIAL CONSERVATION AND RESOURCE EFFICIENCY | ||||||
| Foundation Systems | ||||||
| A4.403.1A Frost-protected Shallow Foundation (FPSF) is designed and constructed. |
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| A4.403.2Cement use in foundation mix design is reduced. Tier 1. Not less than a 20 percent reduction in cement use. **Tier 2.**Not less than a 25 percent reduction in cement use. |
2 | 2 | ||||
| Efficient Framing Techniques | ||||||
| A4.404.1 Beams and headers and trimmers are the minimum size to adequately support the load. |
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| A4.404.2Building dimensions and layouts are designed to minimize waste. |
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| A4.404.3Use premanufactured building systems to eliminate solid sawn lumber whenever possible. |
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| A4.404.4 Material lists are included in the plans which specify material quantity and provide direction for on-site cuts. |
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| Material Sources | ||||||
| A4.405.1 One or more of the following building materials, that do not require additional resources for finishing are used: 1. Exterior trim not requiring paint or stain 2. Windows not requiring paint or stain 3. Siding or exterior wall coverings which do not require paint or stain |
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| A4.405.2 Floors that do not require additional coverings are used including but not limited to stained, natural or stamped concrete floors. |
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| A4.405.3Postconsumer or preconsumer recycled content value (RCV) materials are used on the project. **Tier 1.**Not less than a 10 percent recycled content value. **Tier 2.**Not less than a 15 percent recycled content value. |
2 |
2 |
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| A4.405.4Renewable source building products are used. | ~~~~ | ~~~~ | ~~~~ | ~~~~ | ~~~~ | |
| Enhanced Durability and Reduced Maintenance | ||||||
| 4.406.1 Annular spaces around pipes, electric cables, conduits or other openings in plates at exterior walls shall be protected against the passage of rodents by closing such openings with cement mortar, concrete masonry or similar method acceptable to the enforcing agency. |
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| Water Resistance and Moisture Management | ||||||
| A4.407.1Install foundation and landscape drains. | ~~~~ | ~~~~ | ~~~~ | ~~~~ | ~~~~ | |
| A4.407.2Install gutter and downspout systems to route water at least 5 feet away from the foundation or connect to landscape drains which discharge to a dry well, sump, bioswale, rainwater capture system or other approved on-site location. |
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| A4.407.3 Provide flashing details on the building plans and comply with accepted industry standards or manufacturer’s instructions. |
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| A4.407.4 Protect building materials delivered to the construction site from rain and other sources of moisture. |
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| A4.407.5In Climate Zone 16 an ice/ valleys, eaves and wall to roof intersections. |
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| A4.407.6Exterior doors to the dwelling are protected to prevent water intrusion. |
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| A4.407.7 A permanent overhang or awning at least 2 feet in depth is provided. |
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