About Us

About Us

Building Efficiency was conceived in response to the growing environmental, economic, and health challenges we face today. We believe that “Building Efficiency” is the first step in sustainable action. We aim to reduce your energy costs and build a green footprint in your community.


David Hamburger, Lead Building Analyst and Founder

Personally and professionally committed to Green values, David Hamburger has earned a range of building efficiency credentials, including CBPCA Verified: Home Performance Contractor, BPI Certified: Building Analyst, and HERS Rater: HERS 2. He has building experience in both conventional and alternative construction—including passive homes in California and British Columbia using a variety of materials such as cob, rammed earth, and straw bale. He holds a B.S. in Ecology and Evolutionary Biology from UC Santa Cruz.


Scott Martin, General Construction and Energy Upgrade Foreman

Scott has wide-ranging experience in building construction as a General Contractor, Foreman, and Superintendent. He has worked extensively on high-end residential new construction projects. Scott has been working as a General Contractor in California for the past 15 years. Scott made his transition into green building practices about 5 years ago and hasn’t looked back. Building human-scale homes that achieve energy efficiency has become his passion. His free time belongs to his family, coaching soccer and baseball, camping, and raising chickens in his backyard. Scott holds a B.A. in Business Administration from CSU Long Beach.

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Energy Efficiency Special

Rebates up to $4,000 from PG&E Energy Upgrade CA program. Call to find out...

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Green Building Facts

  • Buildings are responsible for 48% of greenhouse gases in the U.S.
  • Americans spend on average 90% of their time indoors.
  • Indoor air is 4 to 5 times more polluted than outside air.
  • Energy improvements typically have a simple payback of 1 to 5 years.
  • Improvements typically include insulation, duct sealing, furnace and lighting upgrades.
  • Typical energy savings range from 20 to 50%.
  • A 25% reduction of U.S. home energy consumption = taking half the cars off the roads.