About Us

Our Values

We started our company to address the need for truly sustainable construction company for homeowners and businesses in the Front Range of Colorado. Our values are important to us, and we try to honor them in all aspects of our process.


Build using materials that are found or produced locally and have as little embodied energy as possible.


We use materials that are not harmful to the people producing, installing, or living among them.


Not only do we want the inhabitants and the environment to be healthy, but also the building itself.

Low Impact

Low embodied energy, with the least extractive methods possible.

Our Team

Ben Waldman

Ben developed a strong comprehension of conventional and emergency construction techniques during disaster relief work after Hurricane Katrina, the 2010 Haitian Earthquake and Superstorm Sandy. Throughout his disaster relief work, he had the opportunity to see and work on many unconventional and experimental projects. While in Haiti Ben designed and built composting toilets for local communities and schools. The opportunity to learn from a plethora of conventional and alternative craftsfolks, starting in 2006, helped Ben become an elastic builder. While working in Haiti Ben stumbled upon natural building and later took on several workshops and work-trade opportunities in California. After returning to Denver, Ben became a certified American Clay applicator and worked for local artisan plasterers while developing and launching his own natural building contracting business.

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Frank Wetenkamp

Frank grew up in Massachusetts where his building career began. At age 12 he was building boardwalks with the Youth Conservation Corps. Frank started working as a carpenter’s assistant at age 14, and kept that job every summer through his sophomore year of college. Frank attended the University of New Hampshire where he studied Civil Engineering with a minor in Architectural studies. Upon graduation, Frank worked as a field engineer for a bridge and road construction company. He then moved to Vermont and, while looking for a better way to build, found Yestermorrow Design/Build School and took a six week Natural Building Intensive. With a certificate, friends, colleagues, and renewed passion for building, Frank moved to Boulder and trained under Ryan Chivers of Artesano Plasters. Upon Ryan’s decision to move, Frank started his own business to offer natural building as a solution to home construction needs. Frank is a guest instructor at both Yestermorrow Design-Build School and Community Rebuilds where he helps continue the tradition of passing down knowledge.

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Cheryl Corsiglia

Cheryl got her start as a builder in 2010 through an internship with affordable housing and natural building non-profit Community Rebuilds, working on their first straw bale home.  With a background in Environmental Science, she is attracted to the common-sense ideas behind building better, safer homes which benefit residents’ health and finances, and also reduce environmental impacts. Working in construction means joining a family tradition: her grandfather designed and built homes in Florida, and her father passed many of those skills on to her. In 2014, Cheryl took an adobe and earthen building class in Nicaragua with the Asociación de Mujeres Constructoras de Condega (AMCC) and Liz Johndrow of the Nicaragua Pueblo Project. There she learned how to design and build homes using adobe blocks, cob, and other earthen building methods. Returning to Colorado, she joined Common Earth and began applying her skills to local projects, while also honing new talents. Cheryl is also a member of the board of the Colorado Straw Bale Association.

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