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New construction · Sunnyvale

How do Title 24 and CALGreen affect new construction in Sunnyvale?

Sunnyvale is in California Energy Code Climate Zone 4. Title 24 sets the envelope, HVAC, and renewable requirements; CALGreen sets the green-building baseline. Both are enforced by City of Sunnyvale Community Development Department — Building Safety Division at plan check and inspection.

What changes the answer in Sunnyvale.

California Energy Commission Climate Zone 4. New single-family homes must comply with the current Title 24 Part 6 envelope, HVAC, hot-water, and rooftop solar-PV requirements. CALGreen Part 11 mandatory measures (≥65% C&D waste diversion, water-efficient fixtures, indoor-air-quality measures) apply to all new homes. Sunnyvale has adopted an all-electric reach code for new construction with limited exceptions; confirm scope at intake.

  • Climate Zone 4 compliance pathway
  • California Energy Commission Climate Zone 4. New single-family homes must comply with the current Title 24 Part 6 envelope, HVAC, hot-water, and rooftop solar-PV requirements.
  • CALGreen Part 11 mandatory measures (≥65% C&D waste diversion, water-efficient fixtures, indoor-air-quality measures) apply to all new homes. Sunnyvale has adopted an all-electric reach code for new construction with limited exceptions; confirm scope at intake.
  • Strong California solar resource; Title 24 PV sizing is calculated per conditioned floor area and orientation.

Source-backed note

Title 24 Part 6 (energy) and CALGreen are state-mandated baselines; local ordinances frequently add reach-code amendments such as all-electric requirements.

Reference: California Energy Code (Title 24, Part 6) — California Energy Commission

Local authority: City of Sunnyvale Community Development Department — Building Safety Division

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