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What Is Building Biology?

As a certified Building Biology Practitioner, momsAWARE founder Andrea Fabry is often asked, "What is Building Biology?" The answer is simple, but often ignored when designing our homes, offices, and schools.

New Construction

Building Biology is the study of the impact of the indoor environment on our health. Building Biology comes from the German term Bau-Biologie (bau meaning building and the living environment, bios meaning all forms of life, and logos implying a sense of order).

There is no question that buildings have an impact on those who occupy them. The average person spends 90 percent of their time indoors. This is in stark contrast to most of human history, when mankind spent significant time outdoors. The World Health Organization meanwhile continues to sound the alarm when it comes to the rise of chronic diseases (see this WHO fact sheet).

Building Biology in the United States was founded by Helmut Ziehe, a seasoned German architect who was working in North Africa in 1980. Ziehe helped design government homes made of concrete. Most of the city's 90,000 inhabitants abandoned the homes, choosing to live in tents instead. Ziehe realized that health must be the primary concern in building design, eventually relocating to Florida where he founded the International Institute for Bau-Biologie & Ecology in 1987, now known as the Building Biology Institute (BBI).

Building Biology acknowledges that a sick building can diminish our life while a health-supporting building can enhance it, emphasizing the use of natural building materials as opposed to those that are synthetic and unnatural.

25 Building Biology Principles

The following principles offer a comprehensive checklist when it comes to safe, healthy building construction. While all 25 principles are difficult to achieve, this list shows how far we have strayed from natural building practices.

Site and Community Design

  1. Verify that the site is free of naturally occurring health hazards.
  2. Place dwellings so occupants are undisturbed by sources of man-made air, soil, water, noise, and electro-pollution.
  3. Place dwellings in well-planned communities that provide ample access to fresh air, sunshine, and nature.
  4. Plan homes and developments considering the needs of community, families, and individuals of all ages.

Occupant Health and Well-Being

  1. Use natural and unadulterated building materials.
  2. Allow natural self-regulation of indoor air humidity using hygroscopic (humidity buffering) building materials.
  3. Assure low total moisture content and rapid desiccation of wet construction processes in new buildings.
  4. Design for a climatically appropriate balance between thermal insulation and thermal storage capacity.
  5. Plan for climatically appropriate surface and air temperature.
  6. Provide for ample ventilation.
  7. Use appropriate thermal radiation strategies for heating buildings, including passive solar wherever viable.
  8. Provide an abundance of well-balanced natural light and illumination while using color in accordance with nature.
  9. Provide adequate acoustical protection from harmful noise and vibration.
  10. Utilize non-toxic building materials that have neutral or pleasant natural scents.
  11. Use appropriate water and moisture exclusion techniques to prevent interior growth of fungi, bacteria, dust, and allergens.
  12. Assure best possible potable water quality by applying purification technologies if required.
  13. Utilize physiological and ergonomic knowledge in interior and furniture design.
  14. Consider proportion, harmonic measure, order, and shape in design.

Natural and Man-Made Electro-Magnetic Radiation Safety

  1. Minimize indoor interference with vital cosmic and terrestrial radiation.
  2. Minimize man-made power system and radio frequency radiation exposure generated from within the building and from outside sources.
  3. Avoid use of building materials that have elevated radioactivity levels.

Environmental Protection, Social Responsibility, and Energy Efficiency

  1. Construction materials and production and building processes shall provide for health and social well-being in every phase of the building's life-cycle.
  2. Avoid the use of building materials that deplete irreplaceable natural resources or are being harvested in an unsustainable manner.
  3. Minimize energy consumption throughout the life of the building utilizing climate-based and energy-efficient design, energy- and water-saving technologies, and renewable energy.
  4. Consider the embodied energy and environmental life-cycle costs when choosing all materials used in construction.

For printable information relating to these principles, visit the Building Biology Institute's Free Downloads page.

While the medical industry continues to look for cures for chronic disease, Building Biology seeks to prevent disease by helping consumers make informed choices when it comes to their indoor environments. According to Building Biology, nature is the ultimate guide.

Would you like to learn more about Building Biology? You'll find fact sheets for each of the following at the Building Biology Institute's Free Fact Sheets page.

  1. Ample Natural Ventilation
  2. Healthy Sleeping Sanctuary
  3. Free-Flow Cosmic/Terrestrial Radiation
  4. EMR Safety from Outside Sources
  5. Healthy Cleaning Products
  6. Drinking Water Purity
  7. Health-Supporting Color Scheme
  8. Non-Toxic Natural Finishes Throughout
  9. Eliminate Toxic Combustion By-Products
  10. EMR Safety In-house
  11. Healthy Radiant Heating
  12. Acoustic Protection in Walls & Windows
  13. Flow-Through Walls & Moisture Control

Building Biology Healthy Home

Image courtesy of the Building Biology Institute

The Building Biology Institute offers online courses, certification programs, and useful publications. With the work of the BBI and an educated public, we may soon see major changes in the way we construct and maintain our homes, offices, and schools.


"I'm new at this, but today I cleaned my bathroom with baking soda and vinegar. It's much better not having those strong chemical smells afterwards."

– Anonymous

"I have been sick for almost 6 months now and doctors were not able to figure out why. I finally put it all together after going away for vacation for a week and suddenly my symptoms were going away."

– Anonymous

" age 35 or 36 I started to become allergic to everything, and I got asthma at age 36... I went to doctor after doctor after doctor and was desperate for help, but nobody could help me."

– Mia

"The entire time we lived in our (mold-infested) house the kitchen sponge would get musty smelling within 3-4 days. It was so strange. I had to buy a pack of sponges nearly every week."

– Anonymous

"I had been struggling with headaches, head fog, breathing difficulties (unable to get a full breath), constant scalp tingling, migraines, nausea, feeling spacey/detached, and severe itchy skin."

– Anonymous

"I knew it was mold, but doctors kept telling me I had anxiety. I was sitting in my office and could not remember who I was talking to, or what we were talking about."

– Brenda

"I started finding myself sitting on the floor in rooms of my house and not remembering how I got there, what I was doing before, or how long I had been there."

– Brenda

"Our family has been out of our home for 9 months due to mold... I am so scared and weak from all of this. We have lost friends; family members don't understand."

– Anonymous

"My daughter started having digestive problems... heart palpitations... coughing episodes... muscle/joint pain... asthma/allergies... Her doctor finally advised me to check for mold in our home."

– Anonymous

"My daughter has had many blood samples taken to test for everything imaginable and her doctor just seems puzzled. Everything comes back normal."

– Anonymous

"I've been living in a mold-infested home for 13 months... I was going CRAZY! Finally figured it out... Just a few days of recovering in a mold-free home and I feel AMAZING!!!"

– Lauren

"We were having a lot of health problems and had been to the doctor countless times... we had large circles of slimy greenish-black mold on the bathroom ceiling, where it had caved in a few months before."

– C.

"The ERMI mold test as well as your helpful articles and Toxic Talk Tuesday programs have helped us avoid a terrible mistake in purchasing a new home."

– Angela

"Both of my sons went downhill quickly and coughed for months... They both lost their ability to read, had profound vision disturbances, and had phenomenal gastric issues."

– Lee

"We had some water leaks in our home... we never thought we needed to clean out and remove the floor, the ceiling, or the drywall... my two small children and I have remained constantly sick for years in this home."

– Mia

"My symptoms persisted and eventually turned into lethargy and depression. At the age of 26, I required a nap every evening after work."

– Jennifer

"In my moldy home if I left the wet clothes in the washer they would get musty very quickly and I'd have to re-wash... Sometimes I'd run a load, go to work, and they'd be musty when I returned that evening."

– Anonymous

"I was skeptical at first that these (natural cleaning) products would work, but they work better than the stuff I buy at the store! We will soon be moving to the personal care products as well!"

– Jennifer

"We all suffered from headaches, hormonal body temperature fluctuations, brain fog, fatigue, difficulty breathing, thrush, rashes, and yeast infections... we vacated our home two weeks ago."

– Anonymous

This site is dedicated to a true friend and mother — Barbara Dell Kessel (1929-2009)