Top 10 States for NGBS Certification Activity
With nearly 350,000 homes certified to the National Green Building Standard (NGBS) since its launch in 2009, builders across the United States are continually adding to the pipeline of NGBS projects.
Here’s a snapshot at the top NGBS Green certification activity in 2021 for both single-family and multifamily projects:

Five states rank in the top 10 for both single-family and multifamily projects: Texas, Florida, North Carolina, Maryland, and Virginia.
The NGBS provides builders with a national standard to define and measure sustainable multifamily and single-family homes, developments and remodeling projects. It also offers consumers a level of confidence that they are purchasing an independently verified green property.
Builders can learn more about the value of NGBS Green certification at nahb.org.
To stay current on the high-performance residential building sector, with tips on water efficiency, energy efficiency, indoor air quality, and other building science strategies, follow NAHB’s Sustainability and Green Building efforts on Twitter.
Latest from NAHBNow
Oct 03, 2025
NAHB Awards Deadline Extended to Oct. 20Interested applicants for NAHB’s prestigious award programs now have additional time to submit top projects and individuals for consideration. Don't miss your chance - apply by Monday, Oct. 20.
Oct 03, 2025
Fast Money, Fewer HeadachesEvery week lost to underwriting is a week you’re not building, selling, or scaling. Delays push projects out of prime seasons, tighten cash flow, and leave crews idle. And when banks already move at their own pace, builders who aren’t prepared can get stuck at the back of the line.
Latest Economic News
Oct 03, 2025
Supply-Side Cost Pressures Drove Housing as Inflation Leader in 2024Though the rate of inflation peaked in June 2022, consumer prices continued to increase throughout 2023 and 2024 as inflation drove further price growth, according to 2024 CPI review from the Bureau of Labor Statistics.
Oct 02, 2025
Square Foot Prices Moderate in 2024Median square foot prices for new single-family detached (SFD) homes started in 2024 grew modestly, according to NAHB’s analysis of the latest Survey of Construction (SOC) data. For custom, or contractor-built, homes, the median price was $166 per square foot of floor space, up slightly from $162 in 2023.
Oct 02, 2025
17% of NAHB Builders Built Age-Restricted Housing in 2024Only 17% of NAHB builder members build age-restricted housing for people age 55 or older, according to 2024 Member Census. This is up two percentage points from the previous year. However, this share has remained within a narrow band (15%-17%) since the question was added to the member census in 2009.