The building envelope is the exterior and demising partitions that enclose conditioned space. The envelope is a combination of building components that includes the foundations, floors, walls, roofs, windows, and doors. The envelope components must meet applicable (Energy Code) requirements to ensure an energy efficient building.

Residential and Nonresidential

Fact Sheet

Single-Family

Brochures

Nonresidential

Brochures

Multifamily

Brochures

Contact

Building Energy Efficiency Standards - Title 24
title24@energy.ca.gov
Toll-free in California: 800-772-3300