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New construction · Palo Alto

How do Title 24 and CALGreen affect new construction in Palo Alto?

Palo Alto 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 Palo Alto Planning & Development Services — Building Division at plan check and inspection.

What changes the answer in Palo Alto.

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. Palo Alto has adopted an all-electric reach code for new construction with limited exceptions; verify current 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. Palo Alto has adopted an all-electric reach code for new construction with limited exceptions; verify current 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 Palo Alto Planning & Development Services — Building Division

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