Occupant Survey

Lawrence Berkeley National Laboratory recently conducted an online surve of new homes in California.

  • House or townhouse or duplex in California, built in 2002 or later.

The survey asked questions about home characteristics, appliances, indoor air quality, and demographics.

This research will help inform how adequate ventilation and good indoor air quality can be maintained in new homes, while reducing air filtration and the associated energy use.


Who funded this research?

This research is funded by the California Energy Commission.

What kind of information did the survey collect?

The survey has two parts:

  • A 5-minute survey about basic home characteristics.
  • An additional 15-minute survey on mechanical systems and appliances, household activities, and indoor air quality.

We obtained approximately 3,000 responses, mostly from people who live in Southern California.

How will the information be used?

The data gathered will help advance our understanding of ventilation in homes, which can affect indoor air quality and energy use. This information will help inform California's building energy codes that aim to improve energy efficiency while maintaining good indoor air quality.

Was there a financial incentive to completing the survey?

Yes, survey respondents could enter the chance to win $100 by filling out the survey and submitting contact information. One winner was announced at the beginning of each month during the survey period from June 1 to October 1, 2015.

How do I find out results from this survey?

We plan to publish our analysis of the survey results in Spring 2017. A copy of our report can be accessed from this website.

Who can I contact to find out more information?

If you have any questions about the research study, please contact:

Iain Walker, Ph.D.
Principal Investigator, Residential Building Systems Group
Lawrence Berkeley National Laboratory
[email protected] | (510) 486 4962


Occupant survey completed