Resources/Regulations
activeState of California

Title 24

2025 California Building Energy Efficiency Standards (Title 24, Part 6)

Overview

Applies To
All new construction, additions, and alterations applying for building permits on or after January 1, 2026
Building Size Threshold
All sizes (applies to all permitted projects)
Building Types
Residential, commercial, multifamily, institutional
Effective Date
January 1, 2026
Jurisdiction
State of California
State
California
Current Status

2025 standards take effect January 1, 2026. Emphasizes building decarbonization through heat pumps, battery storage, and demand flexibility. Estimated to save $4.8B in energy costs.

Key Deadlines

January 1, 2026

2025 Title 24 standards take effect for all new permit applications

Ongoing

Existing buildings must comply when making alterations, additions, or HVAC replacements

Penalties & Enforcement

Penalty

Project delays; permit denial; stop-work orders

Non-compliant projects cannot receive building permits or certificates of occupancy; stop-work orders may be issued

Compliance Requirements

Meet energy efficiency standards by climate zone (16 zones in California)
Heat pump requirements for space heating and water heating in most new buildings
Photovoltaic system with battery energy storage for new construction
Enhanced ventilation standards for indoor air quality
High-efficiency HVAC replacement requirements for existing commercial buildings

Data Required

Energy compliance documentation (CF-1R for residential, NRCC forms for commercial)
HERS verification testing results
Equipment specifications and efficiency ratings
Building envelope specifications (insulation, windows, roofing)

How to Submit

Submission Method

Local building department permit application with energy compliance forms

Submission Format

CBECC compliance software output; HERS inspection reports

Official Resources

Official State of California Resource
https://www.energy.ca.gov/programs-and-topics/programs/building-energy-efficiency-standards/2025-building-energy-efficiency

Related Articles

Related Markets

Conduit automates Title 24 compliance data collection.

Stop chasing utility bills. Conduit collects, organizes, and submits the data you need for State of California compliance.

Request a Demo →