sustainability blog
Effective September 12th 2026. Telluride adopted the 2024 version of the IECC (zone 6), and projects must follow the ERI path to compliance.
Amended energy code has been adopted and goes into effect July 1st 2025.
Updated energy code effective April 27th 2025.
Confluence was incorporated on April 1st 2000. It’s been a wild ride at times. Thanks to everyone that helped make it possible.
The Town of New Castle has a unique approach. They do not require a HERS Rating, but they do require a rater-like Building Science technician to inspect construction and fill out their checklist.
The Town of Basalt, Climate Zone 6B, is currently on the 2021 IECC, which took effect June 13th 2023.
As of May 16th 2024: 2021 International Energy Conservation Code.
Effective June 16, 2023 Garfield County has adopted the 2018 International Energy Conservation Code (IECC).
On June 6, 2022, the City will require building permits to use the 2021 editions of the I-codes, including the International Energy Conservation Code.
Aspen’s adoption of the 2021 I-codes is heavily modified. This article looks only at the energy conservation parts of the adoption.
Or just a great HERS / ERI score. It’s not easy to show energy code compliance in climate zones 6 and 7.
What do we need in place to ensure a successful transition to the 2021 IECC?