The total number of green, LEED-certified homes across the world has grown 19% since 2017, to an all-time high of nearly 500,000 units across the world, according to the U.S. Green Building Council (USGBC)’s new LEED in Motion: Residential report, which tracks green construction trends across the home market.

More than 400,000 of the world’s 500,000 LEED-certified housing units are located in the United States. Of the top 10 states for LEED-certified residential volume, California ranks first with nearly 40,000 LEED-certified residential units, followed by Texas with more than 24,000.

In a 2017 study of green home construction, Dodge Data & Analytics found that one-third of single-family builders, or 33%, are building more than 60% of their homes as green homes. Of the builders surveyed, many builders who were not building green at that level anticipated doing so in the future, with 44% expecting to build more than 60% of their home projects green by 2022. On the same timescale, 31% of builders expect to be dedicated green builders – building more than 90% of their projects as green.

“One of the most important investments a person will make is in their home, and the quality of these spaces can have a direct impact on an individual’s health and well-being,” says Mahesh Ramanujam, president and CEO of the USGBC. “As an industry, we want to find ways to raise everyone’s living standard, so we need to prioritize the construction and remodeling of homes so that they are not only environmentally friendly, but they also have the power to improve the quality of life for all human beings.”

LEED-certified homes use 20% to 30% less energy on average than a traditional home, according to the USGBC, with some homeowners reporting up to 60% less energy use. Its design ethos promotes human health and comfort while minimizing energy, waste, and water.

“Our own research tells us people understand reducing waste, conserving energy and water, and limiting our carbon footprint are important, but it can feel too daunting,” says Ramanujam. “By building and buying green homes we make those actions easier to do, while also creating a healthier, more sustainable environment for ourselves and future generations.”

The USGBC opened its registration for the latest version of its rating system, LEED v4.1 Residential, in April. Click here to access the full report.