solutions to create a 

Healthy Eco Home

Beyond Green - Building Biology



We offer a holistic approach...  

to healthy, eco-friendly, energy efficient home improvement & building services based on a 20 year history of Building Science principles & training  

...building that is closer to nature.


We enable you to thrive in buildings that are

* healthy * safe * efficient * quality  *

* sustainable * comfortable * harmonious *



Using state of the art testing equipment, our healthy building consultant services assist you in creating your beautiful, healthy, eco home or workplace include...



building design & construction consultation services


    • healthy eco-friendly building consultations - remodeling & new construction
    • passive & geo design
    • energy upgrades - BPI certified
    • general contracting - CA Licensed & EPA Lead Safe certified
    • construction management
    • healthy eco materials & finishes - IBE certified  

healthy home environmental inspections 

    • for mold, allergens, EMFs, VOCs, moisture - IBE certified
    • EMF, high frequency radiation & Smart Meter testing 
    • Therography 

energy assessments

    • BPI certified
    • Thermography


seminars, training & professional speaking

    • for home & business owners, 
    • real estate agents & trade professionals


  • Improve your health and well being
  • Save energy and lower your bills
  • Make your home more comfortable in all seasons
  • Improve the air quality inside your home reducing health care costs
  • Conserve resources and reduce greenhouse gases

As a certified Building Biology Environmental Inspector, BPI certified Professional Building Analyst and California Licensed Building Contractor (#661635), Jon Cotham is our highly experienced healthy building consultant who strives to create a home or workplace that will meet your lifestyle and financial needs. Our ultimate objective as a team is to not only meet those needs, but to exceed your expectations.  We offer many excellent local references at your request.   

We invite you to contact us with any questions or to schedule an appointment. We are here to serve you and provide you with the best services possible.


We look forward to hearing from you!



(c)2010 Jon Cotham Construction - CA Lic #661635


Natural Building Network
(c)2010 Jon Cotham Construction - CA Lic #661635