Title 24 California: The Complete Energy Code Compliance Guide

How California Title 24, Part 6 energy compliance actually works: the 16 climate zones, CF1R/NRCC documentation, NA7 acceptance tests, and the 2025 standards taking effect January 1, 2026.

What Title 24, Part 6 Actually Regulates: Title 24 is the part of the California Code of Regulations that covers building standards, and Part 6 within it is the Building Energy Efficiency Standards: the energy code that every permitted construction project in the state must meet. Part 6 sets requirements across four syst

California's 16 Climate Zones Drive Every Requirement: California is divided into 16 climate zones, and they are the single most important variable in a Title 24 calculation. A building in the mild coastal Climate Zone 3 around the Bay Area faces very different envelope and equipment requirements than one in the hot Central Valley Zo