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Your one-stop shop for no-cost tools, training, and resources to help you comply with California's Title 24, Part 6 building energy code and Title 20 appliance standards. We're powered by the California Statewide Codes & Standards Program and vetted by the California Energy Commission.

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Virtual Compliance Assistant

We can help you complete your nonresidential forms and verify compliance. Click here to get started!

Looking for the official standards?

The Reference Ace tool helps users navigate the Title 24, Part 6 and Title 20 documents. Features like “pop-up“ definitions of defined terms, keyword search capabilities, and hyperlinks that allow you to jump directly to related sections make using the Energy Code documents easier.

2025 Title 24, Part 6 Essentials — Nonresidential Standards: What’s New

2025 Title 24, Part 6 Essentials — Residential Standards: What’s New

2022 Title 24, Part 6 Essentials — Single-family Compliance: EnergyPro Introduction

An array of downloadable materials providing practical and concise guidance on how and when to comply with California’s building and appliance energy efficiency standards.

Ace Resources fact sheet for Accessory Dwelling Units, showing some basic questions and answers, plus the table of contents for this fact sheet.

Ace Resources Building Inspection Checklist showing types of documents required to be on-site and provided to the building owner.

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