About Us

US Hemp Building Association
Join Us
USHBA Since 2019

“I don’t know if hemp is going to save the world, but it is the only thing that can.”

Jack Herer

Our History

Like minded people have come together with a shared mission to use hemp as a sustainable building resource. Beyond education, we demonstrate the uses of hemp in building and are working towards certification of hemp building materials.

What Drives Us

Our Mission

The purpose of the USHBA is to support and advocate for hemp building professionals, hemp building projects and hemp building materials in the United States.


Join Us

Saving the world

Why Hemp?

It is all about carbon

Growing hemp at scale will pull massive amounts of CO2 and the utilization of the hemp in place of traditional methods will further offset CO2. Every part of a hemp plant has a use and a purpose.

Benefits of Hemp fiber

The long outer fibers of a hemp stalk are stronger than steel. They are woven into comfortable, durable fabric at a fraction of the environmental impact of cotton. The inner hurd used for hempcrete is not only a healthier finished product, but it is CO2 neutral or negative.

Hemp as a super food

The seed or grain of hemp is high in protein and amino acids. With up to 30% protein and an abundant crop, hemp can feed the world.

Hemp as medicine

Research will catch up to anecdotal evidence. There is a reason why just about everyone has heard of CBD. We are learning more and healing through hemp.

Innovation with hemp

The lifting of prohibition is opening up new research. Look for much innovation like the use of hemp fibers to make super capacitors at a fraction for the cost for traditional graphine.


Our Board of Directors

Bob Escher, AIA


Vermont Architect, Bob Escher AIA, hails from an impressive family of builders and engineers whose projects include New York’s original Yankee Stadium and Switzerland’s Gotthard Tunnel.
A practicing architect for over thirty years, his firm features a national portfolio of completed projects in numerous states including New York, Virginia, Florida, New Jersey, Massachusetts and Vermont.
After completing the first permitted hempcrete structure in Denver Colorado in 2017 and being elected president of the USHBA in 2019, Bob is ready to take the lead to educate, innovate and create the infrastructure to bring hemp-based
construction materials to the marketplace.

Dion Markgraaff

Vice President

With more than 29 years of experience in the cannabis industry, Mr. Markgraaff has achieved many “firsts” for the cannabis industry, including founding Europe’s first hemp store “Cannabis in Amsterdam” in 1993 and worked with General Hemp, a private equity company that started the CBD industry in the USA and around the world.

Eric McKee

Founder of the USHBA & 
Director of Strategic Growth

Eric McKee is the Founder and CEO of Wndr, a Colorado startup whose mission is to infuse sustainability and style with economic viability in building with Hemp. Eric built the first permitted hempcrete structure in Denver County which  gained national attention and propelled Eric to the forefront of the Hemp industry. Eric has contributed countless hours to promote building with Hemp, including time in Haiti’s Wynne Farm Nature Reserve demonstrating Hemp’s application for humanitarian and ecological purposes, speaking and training at multiple Hemp Expos, Symposiums and Webinars, and contributing his expertise to the International Hemp Building Association.

Kimberly Claxton



Kim Claxton has a love for numbers and an appreciation for cannabis, so working in the industry was only natural. Today, she runs a full-service accounting firm, which provides tax assistance, bookkeeping, payroll, and CFO services to the cannabis industry.
She loves working with cannabis clients and values the opportunity to help them navigate the tricky world of finance and accounting.
She is a passionate advocate for the plant and the rights of patients and consumers and is involved with numerous organizations promoting cannabis education and advocacy, including Memphis NORML.

Scheril Murray Powell

Director of Government Relations Development

Scheril Murray Powell, Esq. is an Agricultural and Cannabis Attorney at Doumar, Allsworth, Laystrom, Voigt, Adair, and Dishowitz.   A highly respected force in the cannabis industry, Scheril was a recipient of the Cannabis Business Award’s Industry MVP Award and the Crohns Foundation Blood, Sweat, and Tears Award in 2018. She has been selected to share her expertise at many Cannabis Conferences around the world as the industry flourishes worldwide. Scheril was the regular Cannabis Law expert on Cannabis Law Radio every Saturday morning on Cannabis Life Radio and is launching a Cannabis Talk Show called “Terps in the City” in Summer of 2019. As a Cannapreneur, Scheril is the President of Canna Headhunters, a staffing agency in the Cannabis Industry that connects Cannabis talent to opportunities. 

Sergiy Kovalenkov

Director of University Relations Development

Known the world over as Dr. Hemphouse, Sergiy Kovalenkov, Civil Engineer, has worked on numerous hemp insulation projects across the globe in countries like: Ukraine, Switzerland, France, Russia, Poland, Australia,USA and Poland. In 2015, he founded Hempire UA in Ukraine, which has developed Hempire Mix, a 100% natural binder, that when mixed with hemp and water creates one of the lightest, carbon negative hempcrete insulation materials on the planet. Hempire has received  high recognition and numerous awards for innovative technology and developing creative, challenging projects building with Hemp. In 2018, Sergiy has founded Hempire USA in California. The company will focus on bringing a new hemp processing technology and other natural, innovative materials to US market and rest of the world.

Henry Valles

Founding Board of Directors Member

Henry Valles is a NAR Green Certified real estate professional with Realty Austin, Co-Founder & Vice President of the Texas Hemp Industries Association and a hemp building advocate. In 2017, He spearheaded Austin’s first hempcrete home in Community First Village, a community for the chronically homeless. Henry has delivered presentations on developing communities through hemp building at multiple conferences, such as the International Hemp Building Symposium and EarthX. Inspired to bring more sustainable and non-toxic solutions to the real estate and building industries, Henry continues to educate his community and champion the use of hemp-based building materials through his real estate and hemp building consulting practices.

Mattie Mead

Founding Board of Directors Member

Matthew Mead is a mountain-minded ecopreneur who is passionate about transforming the built environment to build a better world. While studying both architecture and environmental studies at Hobart and William Smith Colleges, Matthew connected with this passion and directed his studies to focus on built environment solutions. In 2013, enamored with the potential of hempcrete, a material that historically has been underutilized in the US, he founded Hempitecture. This startup concept focused on using hempcrete as a building material to create habitats that are energy efficient, non toxic, and environmentally friendly. Today, Hempitecture has completed numerous hempcrete building projects across the US. While ever-focused on making an impact through Hempitecture, he currently calls Ketchum, Idaho home, where he serves his community as the Vice-Chair of the Ketchum Planning and Zoning Commission.

Ladi March-Goldwire

Founding Board of Directors Member

Ladi is a State licensed General Contractor and Building Code Administrator certified through the International Code Council. She has over 15 years of experience in the construction industry. Her primary focus has been in the creation and expansion of small to medium size construction firms. A project manager at heart, Ladi recognizes the plethora of opportunity associated with cannabis. Recognizing both the economic and ecological advantages to utilizing hemp she ultimately evolved into a hemp enthusiast!

Alli Cloyd


Alli Cloyd began her journey with hemp through working as the Event Director with the National Hemp Association (2013 – 2016), where she learned what it takes to help keep an association thriving. With the NHA, she recognized the potentials of hemp and her love and curiosity for the plant really began to blossom. From 2016 to 2018 Alli organized and facilitated several hempcrete workshops where students came to learn the basics of building with hemp. Alli has big goals to bring accessible processing, building education and healthy homes to communities around the country. 

Dawn Schulz

Interim Executive Director

Dawn Schulz is an experienced Controller and Project Manager with background working across multiple industries including investment advisory services and compliance, residential and commercial construction, environmental services and alternative education focused on experiential learning, nature-based education and arts integration.  She has five years of experience on the leadership team for a seed to sale vertically integrated corporate farm producing seeds and plugs for native wildflowers and grasses with agricultural operations including 750 acres of fields with up to 400 different plant varieties, an 80,000 sf state of the art greenhouse and warehouse, seed sorting, cleaning, and storage operations.  The team oversight also included manufacturing of an environmental erosion control product and a spring-fed trout farm, processing center, retail store and specialty restaurant.  

Cameron McIntosh

Director at Large

Cameron has served as the Vice Chair of USHBA Area Leadership Committee, is a founding influencer of USHBA since 2019. He is a founding member of All Together Now PA Industrial Hemp Supply Chain Coalition and owner of Americhanvre, a licensed and fully insured hempcrete installation firm in Allentown, PA.  

Tommy Gibbons

Founding Board of Directors Member

Tommy joins the US Hemp Building Association from Hempitecture where he manages the company’s operations.  He brings experience in corporate finance and growing early-stage companies and complements this business experience with a green building background that includes a certification as a LEED Green Associate and training from France’s l’École Nationale du Chanvre.  Before joining Hempitecture, Tommy worked at an education startup called Piper and Goldman Sachs.  He graduated from Princeton University with a degree in public policy.