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Green Generation Building Company, LLC is a design-build general contractor based in Yellow Springs, Ohio. We build homes that are modern and offer performance, durability and craftsmanship.


We are inspired to build the best possible homes, and for us that means the highest performance. Whenever possible, we build to the Passive House energy standard through PHIUS the most rigorous energy standard in the world. This means we also create the most comfortable homes for any season, the most resilient homes in power outages, and the lowest maintenance homes over time. We believe in smartly allocating limited resources for the best possible homes even if that means prioritizing comfort over square footage.  Good design tailors your space to fit your lifestyle. Passive House was born in America and engineered in Germany where thousands of Passive Houses have been built over the last decade and a half.  Now, these homes are standing the test of the American market and climate.

design-build     |     construction     |     design & consultation

More About Us

In addition to our passive house principles of environmental responsibility and energy efficiency, we place great importance on the human dimensions of the houses we create. By fostering healthy indoor environments that respect human needs and pattern, we build spaces that are efficient as well as the most comfortable. We also feel that both the location of the home and the space itself influences the flow of daily life, and we endeavor to build homes that encourage community and nurture connections between people.

Ultimately, we feel that our work is not for only for our present comfort but is sustainable for generations.  We want our houses to have a “timeless design” from an aesthetic and practical point of view. We also know that they must be appropriate for a world whose energy needs are vastly different from our own. When we build homes that take into account both the personal and global requirements of the 21st century, we are building a legacy of ecological stewardship And a new high standard for comfort.


Passionate about a sustainability and environmental living, Andrew volunteered for AmeriCorps and served on the board of Home Inc, an affordable housing organization, before founding Green Generation Building Co. in 2009.

Andrew Kline


Alex has been with Green Generation Building Co, since 2009 and brings a wealth of design talent and innovation. He has an MArch from Savannah College of Art and Design, and is a Certified Passive House Consultant. Alex subscribes to the philosophy of “Less is More.” (Mies Van Der Rohe) in design and energy, but sentiment and warmth are essential characteristics in a home. He feels designing for peoples lives and the future is a responsibility and a privilege.

Alex Melamed

Design & Architecture

“There is no creation without tradition; the ‘new’ is an inflection on a preceding form; novelty is always a variation on the past.” – Carlos Fuentes


Construction is at the core of our business. We stand behind our work, and are selective with the materials we use. We will ensure your investment of a lifetime, lasts several.


Whether its minor renovation or building your dream home, we take pride in our superior craftsmanship. You will see the difference, in every detail.