/ Buildings / Utah’s Uniform Building Code Commission votes in favor of updated building standards

Utah’s Uniform Building Code Commission votes in favor of updated building standards

Parul Dubey on August 24, 2022 - in Buildings, News

The decision is a step toward large economic, public health, and environmental benefits for Utah families and businesses

[SALT LAKE CITY, UT] – On August 10, Utah’s Uniform Building Code Commission, an advisory body to the Utah Legislature, held a public hearing to consider public comment on its proposed amendments and updates to the 2021 building codes for Utah, including the 2021 International Energy Conservation Code (IECC). Building codes set the minimum requirements for new buildings or major building remodels and the IECC specifically addresses the level of energy efficiency in new homes and commercial buildings. Any changes to building and energy codes have ripple effects on Utah homeowners, businesses, and builders, as well as Utah’s economy and environment.

At the August 10 public hearing, around 60 people from industry, public interest organizations, and the community attended both virtually and in person, including representatives from Utah Clean Energy (UCE). Other organizations in attendance at the meeting include AIA Utah, ASHRAE Utah, Utah Association of Energy Users, Garbett Homes, Huntsman Building Solutions, Responsible Energy Codes Alliance, HEAL Utah, and o2 Utah.

Many of those in attendance spoke in favor of adopting the complete 2021 IECC for homes and businesses. Many also acknowledged that the Commission’s proposed recommendation is a step in the right direction even if it includes numerous weakening amendments to the residential 2021 IECC.

UCE’s Building Efficiency & Decarbonization Director, Kevin Emerson, stated “Each new building constructed in Utah has the potential to last for 50 to 100 years. If new buildings today are built using old standards for energy conservation, Utah will see higher than necessary energy consumption and the resulting excessive demand on Utah’s utility infrastructure. This excessive demand for energy can increase utility rates for all ratepayers.”

“Utah Clean Energy supports the Commission’s recommendation that Utah adopt the unamended 2021 IECC for commercial buildings and the version of the 2021 IECC for residential buildings being considered in the Title 15A draft.”

Following the public comment, the Commission voted to recommend the most robust update to Utah’s building and energy codes seen in seven years.

What does it mean for families and businesses?

The Commission recommended that Utah adopt the full 2021 IECC for commercial buildings, and an amended version of the 2021 IECC for homes.

The Commission’s amendments to the residential 2021 IECC were made in response to the more than 50 amendments that were proposed by the Utah Homebuilders Association. Many of the amendments proposed by the Association were adopted into the Commission’s recommendation, while many others were declined by the Commission due to the positive cost-effectiveness and energy savings potential of the energy code updates.

While the Commission recommended numerous amendments to the residential 2021 IECC, UCE believes that it strikes a reasonable balance between building science, improvements to energy efficiency, energy cost savings, and political necessity. The amendments that the Commission recommended still leave additional energy savings “on the table”, but the recommendation does represent a step forward for improved energy efficiency in new construction.

If adopted as recommended by the Commission, Utah’s 2021 residential energy code would include new provisions, including:

  • A new provision that requires one of five additional energy efficiency packages be included in new homes
  • Updates to various prescriptive building envelope requirements
  • Requires both a blower door test and visual inspection of the air barrier, air sealing, and insulation installation in a home
  • Requires a modest improvement in whole home air tightness by 2025
  • Adopts requirement for more airtight air ducts
  • Increases the requirement for high efficiency lighting from 75% to 100%
  • Adopts a new requirement for exterior lighting power requirements for residential buildings like dorms, boarding houses, care facilities and congregate living facilities
  • Modified Energy Rating Index rating values based on the 2018 IECC
  • A voluntary zero energy appendix that provides the design and construction industry with a code-based method of designing and constructing zero energy buildings.

Analysis shows updated energy codes are good for Utah

The Commission’s recommendation included consideration of independent analysis that was conducted by the Pacific Northwest National Laboratory for the state of Utah. (Read a factsheet about the Utah analyses.) Highlights of the analyses show positive impacts for Utah homeowners and businesses:

  • Under the unamended 2021 residential energy code the average new homeowner in Utah could expect to save 16.4%, which equates to $334 annually on their utility bills.
  • After accounting for incremental construction costs new homeowners are estimated to save around $150 each year in energy bills with positive net saving by the third year. Note, the incremental construction cost is estimated to be less than 1% of the price of a new single-family home in Utah.
  • When built to the newest commercial energy standard, commercial buildings in Utah are expected to see a reduction in construction costs, as well as an energy cost savings of over $3.00 per square foot due to efficiency improvements in the newest standards.

The analyses show that if Utah were to adopt the newest, unamended 2021 residential and commercial energy codes, Utah would see the following statewide benefits:

  • Utah families and businesses who own new buildings built to the newest energy conservation standards will save $2.8 million each year in reduced utility bills, or $1.03 billion over thirty years,
  • Utah would slash greenhouse gas emissions by 26,000 tons each year, or 14.5 million tons over 30 years, and
  • Over 800 jobs would be created annually, and over 23,000 jobs created over 30 years.

The recommendation made by the Uniform Building Code Commission will result in a portion of these economic and environmental benefits, though specific analysis on how the specific amendments impacts efficiency improvements has not been conducted.

Next step – The Utah Legislature

The Commission’s recommendation will be submitted to the Utah Legislature’s Business and Labor Interim Committee in September 2022 and will then be debated by the full Legislature during the 2023 Utah General Legislative Session, which runs from January 17 through March 3, 2023.


Utah Clean Energy (UCE) works to advance renewable energy and energy efficiency in Utah and the Western Region. It is the state’s independent resource for clean energy policy, regulatory, and consumer information. utahcleanenergy.org

The Southwest Energy Efficiency Project (SWEEP) is a public interest organization promoting greater energy efficiency and clean transportation in Arizona, Colorado, Nevada, New Mexico, Utah, and Wyoming. swenergy.org

SWEEP partners with UCE on energy efficiency matters in Utah. In this capacity, Executive Director Sarah Wright and Building Efficiency & Decarbonization Director Kevin Emerson serve as SWEEP’s Utah representatives.


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