For builders, remodelers & developers
You already build better than code. The problem is proving it: every listing says "energy efficient," and buyers have learned to discount all of them. GreenStar turns your building practices into third-party-verified, marketable proof, on single-family, multifamily, and mixed-use alike.
The problem with "trust me"
Your green claims sound identical to competitors who build to code minimum.
Premiums are hard to justify when buyers can't see the difference behind the drywall.
Certification programs you've tried felt like paperwork mills built for someone else's project type.
Cold-climate electrification still meets "heat pumps don't work here" skepticism.
The path
Every requirement is published; spec against it from day one with no license or membership. It pairs cleanly with Zero Energy Ready, ENERGY STAR, and utility programs you already use.
Browse all 54 requirements →A GreenHome Inspector verifies plans and construction; the Institute certifies. HERS ratings and energy models you already produce carry most of the documentation load.
Register a project →Green Building Registry listing, project profiles and press support from the Institute, badges for standout achievements, and a plaque your buyer shows their friends.
See how other builders tell it →Builders who prove it
All case studies →
HERS −10 — produces more energy than it uses


$60/mo — average all-electric utility bill

48 units — certified affordable housing

Talk to the Institute about registering, or study how GreenStar pairs with the programs you already build to.
Not you? GreenStar also serves homeowners and housing programs and municipalities and home improvement enthusiasts .