Colorado launches Building Code to encourage Efficient Homes
Colorado has adopted a new climate-focused building code that will take effect statewide on July 1, 2026, requiring all cities and counties to follow the standards when updating local codes. Developed by the Colorado Energy Code Board and based on the 2024 International Energy Conservation Code, the new rules aim to cut greenhouse gas emissions from homes and offices, which account for nearly 10% of the state’s total emissions. The code introduces stricter requirements for large homes over 5,000 square feet and encourages the adoption of all-electric heat pumps while ensuring parity between gas and electric systems. State leaders argue the standards will lower energy bills over time and help Colorado reach its climate goals without raising costs for most households.
Builders, however, warn that the rules could worsen housing affordability by driving up construction costs, with critics saying the board gave too much weight to affluent communities over housing needs. Trade associations urged Colorado to adopt the unmodified 2024 code instead, cautioning that tougher requirements could shrink housing supply compared to neighboring states. Environmental advocates counter that the final code strikes the right balance between energy efficiency and affordability, targeting the homes with the highest energy demands while providing flexibility for builders. Despite the debate, the state views the new code as a critical step toward reducing emissions and modernizing Colorado’s housing stock for long-term resilience.
