While a number companies in the U.S. are in the R&D phase of developing hemp building products, only Sunstrand out of Kentucky is offering products such as batt insulation and hemp fiberboard for building.
Hempcrete remains a popular option as a hemp insulative materials and several companies such as Left Hand Hemp and Tiny Hemp Homes offer workshop on using this material.
We will update this answer as new suppliers come online
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Greg Flavall has built a codified hempcrete home in CA. Art du Chanvre has built many of them but I’m not sure if they meet US building code.