Energy efficiency

Energy efficiency is the cornerstone of our sustainability commitment
Our goal is to bring sustainability to the production home market and model innovation in our industry. When we formalized our sustainability commitment 15 years ago, sustainability was considered a luxury in homebuilding. We saw an opportunity to help protect the environment while reducing the overall cost of long-term homeownership for our customers through lower utility bills. We determined that energy efficiency would be the foundation of our program, helping to keep the dream of homeownership attainable while reducing the impact on our environment.

We are the #1 Energy-Efficient National Homebuilder
In 2021, KB Home reached a national average RESNET Home Energy Rating System (HERS) score of 49. We’re proud to have the lowest (and therefore, the most efficient) publicly reported national average HERS score among large production homebuilders. Not resting on our laurels, we are maintaining our HERS score target for additional energy efficiency — 45 by 2025.

We have built more ENERGY STAR certified homes than any other homebuilder
ENERGY STAR is our building science-based platform for energy efficiency and achieving the lowest national average HERS score.
KB Home is proud to have been the first homebuilder to commit to building 100% of our homes to this voluntary and rigorous “above code” standard in 2008, and we have maintained this commitment for over a decade. In contrast, fewer than 10% of new homes built in the U.S. in recent years was ENERGY STAR certified, according to U.S. EPA data. ENERGY STAR certified new homes are independently verified to meet strict guidelines for energy-smart construction set by the U.S. EPA. We have delivered over 165,000 ENERGY STAR certified homes since 2000, cumulatively reducing C02 emissions by an estimated 6.3 billion pounds and helping homeowners save a cumulative estimated $856 million on utility bills.

We’re reducing carbon emissions through home energy performance
Our benchmark to achieve greater energy efficiency and establish our homes’ Scope 3 carbon emission reduction targets is RESNET’s HERS Index. We are committed to publicly disclosing our national average HERS score for our homes each year so that our stakeholders can see how we are measuring up to our energy efficiency and GHG emission reduction goals and target dates. To date, we have met every national HERS score goal and target date that we have set.

In 2022, we were honored to receive recognition once again from the EPA with the following awards, both of which represented an unprecedented achievement for a national homebuilder:

2021 Energy Star Partner of the Year Sustained Excellence Award
2021 Energy Star Certified Homes Market Leader Award
2021 Energy Star Partner of the Year Sustained Excellence Award

2022 ENERGY STAR® Partner of the Year — Sustained Excellence Award — Our twelfth consecutive award for demonstrating leadership in energy-efficient construction.

2021 Energy Star Certified Homes Market Leader Award

2022 ENERGY STAR Certified Homes Market Leader Awards — A record twenty-eight awards for outstanding commitment to promoting energy-efficient construction and providing homebuyers significant value through comfort and energy utility bill savings.